/* Melody Hub Platform - Modern Design System */

/* ==================== Utility Classes ==================== */
/* Screen reader only - visually hidden but accessible */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==================== CSS Variables ==================== */
:root {
    /* Primary - Deep Blue */
    --primary-start: #2040c0;
    --primary-end: #14b8a6;
    --primary: #2040c0;
    --primary-light: #4a90f5;
    --primary-lighter: #6db3fb;
    --primary-dark: #1a348a;
    
    /* Accent Palette - Cyan/Teal/Coral */
    --accent-petrol: #0d9488;
    --accent-teal: #14b8a6;
    --accent-cyan: #22d3ee;
    --accent-sky: #38bdf8;
    --accent-coral: #ff6b2b;
    --accent-orange: #fb923c;
    --accent-amber: #fcd34d;
    --accent-gold: #f59e0b;
    --accent-green: var(--accent-teal);
    --accent-yellow: var(--accent-amber);
    --accent-blue: var(--accent-sky);
    --accent-pink: var(--accent-coral);
    --accent-purple: var(--primary);
    
    /* Dark Glass Base */
    --dark-950: #111018;
    --dark-900: #1e1d2e;
    --dark-850: #272638;
    --dark-800: #35354e;
    --dark-700: #423f60;
    --dark-600: #514e72;
    --dark-500: #625e85;
    
    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #e2e8f0;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    
    /* Neutral scale (kept for legacy component compatibility) */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Semantic Colors */
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --info: #0EA5E9;

    /* Legacy token compatibility (v10 -> v11 Dark Glass) */
    --primary-rgb: 32, 64, 192;
    --primary-50: #e8ecff;
    --primary-100: #d5ddff;
    --primary-200: #b2c2ff;
    --primary-300: #8ea7ff;
    --primary-600: #2f4dcd;
    --primary-700: #243faa;

    --purple-dark: var(--primary-dark);
    --purple-100: var(--primary-100);
    --purple-700: var(--primary-700);
    --indigo-100: #dbe5ff;
    --indigo-700: #3047b6;
    --orange-100: #ffe2cc;
    --orange-700: #c85a12;
    --yellow-100: #fff2bd;
    --yellow-700: #b7791f;
    --amber-500: var(--accent-gold);
    --amber-600: #d97706;

    --success-50: rgba(16, 185, 129, 0.12);
    --success-100: rgba(16, 185, 129, 0.2);
    --success-700: #34d399;
    --success-bg: rgba(16, 185, 129, 0.14);
    --success-light: rgba(16, 185, 129, 0.24);

    --warning-50: rgba(245, 158, 11, 0.12);
    --warning-100: rgba(245, 158, 11, 0.2);
    --warning-700: #fbbf24;
    --warning-light: rgba(245, 158, 11, 0.22);

    --danger-50: rgba(239, 68, 68, 0.12);

    --info-50: rgba(6, 182, 212, 0.12);
    --info-100: rgba(6, 182, 212, 0.2);
    --info-bg: rgba(6, 182, 212, 0.14);
    --info-border: rgba(6, 182, 212, 0.3);
    --info-text: #67e8f9;

    --accent-teal-light: #5eead4;

    --card-bg: var(--glass-bg);
    --bg-secondary: var(--dark-900);
    --border-color: var(--glass-border);
    --color-focus-border: var(--primary);
    --accent-purple-50: rgba(32, 64, 192, 0.12);
    --progress: 0;
    --section-image: none;
    --section-overlay: rgba(17, 16, 24, 0.45);
    --header-height: 80px;
    --spacing-xxl: var(--spacing-3xl);
    --transition-normal: var(--transition-base);

    --pm-accent: var(--accent-cyan);
    --pm-bg-input: rgba(30, 29, 46, 0.7);
    --pm-danger: var(--danger);
    --pm-radius-sm: var(--radius-sm);
    --pm-surface: var(--glass-bg);
    --pm-text-secondary: var(--text-secondary);
    
    /* Typography */
    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;
    --radius-2xl: 1.5rem;
    --radius-3xl: 2rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.16);
    --shadow-md: 0 8px 18px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.26);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.32);
    --shadow-glow: 0 0 60px rgba(32, 64, 192, 0.35);
    --shadow-glow-pink: 0 0 60px rgba(255, 107, 43, 0.28);
    --shadow-glow-cyan: 0 0 40px rgba(34, 211, 238, 0.32);
    
    /* Glassmorphism */
    --glass-bg: rgba(35, 32, 58, 0.62);
    --glass-bg-light: rgba(58, 55, 88, 0.52);
    --glass-bg-lighter: rgba(78, 74, 108, 0.42);
    --glass-border: rgba(180, 170, 210, 0.22);
    --glass-border-light: rgba(180, 170, 210, 0.34);
    --glass-glow: rgba(34, 211, 238, 0.22);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ==================== Font Imports ==================== */
/* Fonts are loaded via <link> tags in base.html (Google Fonts) */

/* ==================== Focus Styles (Accessibility) ==================== */
/* Custom focus ring for better visibility */
:focus {
    outline: none;
}

:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Enhanced focus for links */
a:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Enhanced focus for buttons */
button:focus-visible,
.btn:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 3px;
    box-shadow: 0 0 0 3px rgba(32, 64, 192, 0.3);
}

/* Enhanced focus for form inputs */
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 0;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(32, 64, 192, 0.2);
}

/* Skip to content link for screen readers */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--primary);
    color: var(--white);
    border-radius: var(--radius-lg);
    font-weight: 600;
    z-index: 9999;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--spacing-md);
}

/* ==================== Reset & Base ==================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
    background: var(--dark-950);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    position: relative;
    isolation: isolate;
}

/* Dark glass ambient background */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 10% 20%, rgba(32, 64, 192, 0.35) 0%, transparent 50%),
        radial-gradient(ellipse 60% 50% at 90% 80%, rgba(13, 148, 136, 0.25) 0%, transparent 50%),
        radial-gradient(ellipse 50% 50% at 50% 50%, rgba(34, 211, 238, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse 55% 45% at 30% 70%, rgba(255, 107, 43, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse 40% 35% at 75% 35%, rgba(251, 191, 36, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* Selection styling */
::selection {
    background: var(--accent-cyan);
    color: var(--dark-950);
}

/* ==================== Typography ==================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 700; }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p { 
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

a {
    color: var(--accent-cyan);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-sky);
}

/* ==================== Gradient Text ==================== */
.gradient-text {
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-teal) 50%, var(--accent-sky) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-text-warm,
.gradient-text-alt {
    background: linear-gradient(135deg, var(--accent-coral) 0%, var(--accent-orange) 40%, var(--accent-amber) 75%, #fff4a0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==================== Layout ==================== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-sm { max-width: 640px; }
.container-md { max-width: 768px; }
.container-lg { max-width: 1024px; }
.container-xl { max-width: 1400px; }

main {
    flex: 1;
}

/* ==================== Header & Navigation ==================== */
.header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all var(--transition-base);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-lg);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    gap: var(--spacing-xl);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
}

.logo:hover {
    color: var(--gray-900);
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary-start) 0%, var(--accent-pink) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.25rem;
    box-shadow: var(--shadow-glow);
    transition: transform var(--transition-bounce);
}

.logo:hover .logo-icon {
    transform: scale(1.05) rotate(-5deg);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    list-style: none;
}

.nav-link {
    font-weight: 500;
    color: var(--gray-600);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--primary);
    background: rgba(34, 211, 238, 0.08);
}

.nav-link.active {
    color: var(--accent-cyan);
    background: rgba(34, 211, 238, 0.12);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* ==================== Mobile Menu Toggle ==================== */
.mobile-menu-toggle {
    display: none !important;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    padding: 8px;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    z-index: 1001;
    transition: background var(--transition-fast);
}

/* Mobile Auth Items - Hidden on desktop */
.mobile-auth-separator,
.mobile-auth-item {
    display: none;
}

.mobile-menu-toggle:hover {
    background: rgba(34, 211, 238, 0.12);
}

.mobile-menu-toggle:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hamburger-line:nth-child(1) {
    margin-bottom: 6px;
}

.hamburger-line:nth-child(2) {
    margin-bottom: 6px;
}

/* Hamburger to X animation */
.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Menu Open State - Body */
body.mobile-menu-open {
    overflow: hidden;
}

/* ==================== Buttons ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    border: 1px solid transparent;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn:hover::before {
    opacity: 1;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.btn-primary {
    background: linear-gradient(
        135deg,
        rgba(30, 64, 175, 0.15) 0%,
        rgba(13, 148, 136, 0.15) 50%,
        rgba(34, 211, 238, 0.12) 100%
    );
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    color: var(--text-primary);
    border-color: rgba(13, 148, 136, 0.3);
    box-shadow:
        0 4px 16px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px) scale(1.03);
    background: linear-gradient(
        135deg,
        rgba(30, 64, 175, 0.25) 0%,
        rgba(13, 148, 136, 0.22) 50%,
        rgba(34, 211, 238, 0.2) 100%
    );
    border-color: rgba(13, 148, 136, 0.45);
    box-shadow:
        0 8px 30px rgba(13, 148, 136, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--glass-bg-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--text-primary);
    border-color: var(--glass-border);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--glass-bg-lighter);
    border-color: var(--glass-border-light);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.btn-accent {
    background: linear-gradient(
        135deg,
        rgba(249, 115, 22, 0.15) 0%,
        rgba(13, 148, 136, 0.1) 50%,
        rgba(34, 211, 238, 0.12) 100%
    );
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    color: var(--text-primary);
    border-color: rgba(249, 115, 22, 0.25);
    box-shadow:
        0 4px 16px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.btn-accent:hover:not(:disabled) {
    transform: translateY(-2px) scale(1.03);
    background: linear-gradient(
        135deg,
        rgba(249, 115, 22, 0.25) 0%,
        rgba(13, 148, 136, 0.18) 50%,
        rgba(34, 211, 238, 0.2) 100%
    );
    border-color: rgba(249, 115, 22, 0.4);
    box-shadow:
        0 8px 30px rgba(249, 115, 22, 0.12),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
}

.btn-outline {
    background: linear-gradient(
        135deg,
        rgba(13, 148, 136, 0.06) 0%,
        rgba(34, 211, 238, 0.06) 100%
    );
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: var(--accent-cyan);
    border-color: rgba(34, 211, 238, 0.3);
}

.btn-outline:hover:not(:disabled) {
    background: linear-gradient(
        135deg,
        rgba(13, 148, 136, 0.15) 0%,
        rgba(34, 211, 238, 0.12) 100%
    );
    border-color: rgba(34, 211, 238, 0.5);
    color: var(--text-primary);
    box-shadow: 0 8px 25px rgba(13, 148, 136, 0.1);
    transform: translateY(-2px) scale(1.03);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
}

.btn-dark {
    background: var(--dark-800);
    color: var(--text-primary);
}

.btn-dark:hover:not(:disabled) {
    background: var(--dark-700);
    color: var(--text-primary);
    transform: translateY(-2px);
}

/* Design v11 aliases */
.glass-btn,
.glass-btn-primary,
.glass-btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-decoration: none;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg-light);
    color: var(--text-primary);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: all var(--transition-base);
}

.glass-btn:hover {
    border-color: var(--glass-border-light);
    background: var(--glass-bg-lighter);
    transform: translateY(-2px);
    color: var(--text-primary);
}

.glass-btn-primary {
    background: linear-gradient(
        135deg,
        rgba(30, 64, 175, 0.2) 0%,
        rgba(13, 148, 136, 0.16) 50%,
        rgba(34, 211, 238, 0.14) 100%
    );
    border-color: rgba(13, 148, 136, 0.38);
    box-shadow: 0 8px 25px rgba(13, 148, 136, 0.12);
}

.glass-btn-primary:hover {
    border-color: rgba(34, 211, 238, 0.5);
    box-shadow: 0 12px 30px rgba(13, 148, 136, 0.16);
}

.glass-btn-secondary {
    background: linear-gradient(
        135deg,
        rgba(78, 74, 108, 0.5) 0%,
        rgba(35, 32, 58, 0.62) 100%
    );
    border-color: var(--glass-border);
}

.glass-btn-secondary:hover {
    border-color: var(--glass-border-light);
    background: linear-gradient(
        135deg,
        rgba(95, 90, 128, 0.52) 0%,
        rgba(51, 47, 78, 0.66) 100%
    );
    transform: translateY(-2px);
    color: var(--text-primary);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.0625rem;
    border-radius: var(--radius-2xl);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: var(--radius-full);
}

/* ==================== Cards ==================== */
.card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    overflow: hidden;
    transition: all var(--transition-base);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.card-body {
    padding: var(--spacing-xl);
}

.card-header {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--gray-100);
}

.card-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--gray-100);
    background: var(--gray-50);
}

/* Glass Card */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-border-light), transparent);
}

.glass-card:hover {
    border-color: var(--glass-border-light);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(34, 211, 238, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    transform: translateY(-4px);
}

/* Gradient Border Card */
.gradient-border-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    position: relative;
    padding: 2px;
    background: linear-gradient(135deg, var(--primary-start), var(--accent-pink), var(--accent-cyan));
}

.gradient-border-card::before {
    content: '';
    position: absolute;
    inset: 2px;
    background: var(--white);
    border-radius: calc(var(--radius-2xl) - 2px);
    z-index: 0;
}

.gradient-border-card > * {
    position: relative;
    z-index: 1;
}

/* Teacher Card */
.teacher-card {
    position: relative;
    overflow: hidden;
}

.teacher-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-teal), var(--accent-coral));
    z-index: 1;
    opacity: 0.7;
}

.teacher-card:hover {
    border-color: rgba(34, 211, 238, 0.35) !important;
    box-shadow: 0 12px 36px rgba(2, 8, 23, 0.4), 0 0 20px rgba(34, 211, 238, 0.08) !important;
    transform: translateY(-3px);
    transition: all 0.3s ease;
}

.teacher-card-image {
    height: 180px;
    background: linear-gradient(135deg, var(--dark-800) 0%, var(--dark-700) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.teacher-card-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 30%, rgba(32, 64, 192, 0.32) 0%, transparent 50%),
        radial-gradient(circle at 70% 70%, rgba(13, 148, 136, 0.28) 0%, transparent 50%);
}

.teacher-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.teacher-card-avatar {
    width: 80px;
    height: 80px;
    background: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--primary);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 1;
}

.teacher-card-verified {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: linear-gradient(135deg, var(--success), #059669);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.teacher-card-content {
    padding: var(--spacing-xl);
}

.teacher-card-name {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.teacher-card-instruments {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.instrument-tag {
    background: linear-gradient(135deg, rgba(32, 64, 192, 0.12), rgba(34, 211, 238, 0.1));
    color: var(--primary);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 500;
    border: 1px solid rgba(34, 211, 238, 0.22);
}

.teacher-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    color: var(--gray-500);
    font-size: 0.875rem;
}

.teacher-card-rating {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--accent-yellow);
}

.teacher-card-price {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--gray-900);
}

.teacher-card-footer {
    padding: var(--spacing-md) var(--spacing-xl);
    border-top: 1px solid var(--gray-100);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ==================== Forms ==================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--gray-700);
    font-size: 0.9375rem;
}

.form-label.required::after {
    content: '*';
    color: var(--accent-pink);
    margin-left: var(--spacing-xs);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-family: var(--font-body);
    font-size: 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-xl);
    background: var(--white);
    transition: all var(--transition-fast);
    color: var(--gray-800);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--gray-400);
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
    border-color: var(--gray-300);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(32, 64, 192, 0.18);
}

.form-input.error,
.form-select.error,
.form-textarea.error {
    border-color: var(--danger);
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1);
}

.form-textarea {
    min-height: 140px;
    resize: vertical;
}

/* .form-control - unified form control styling (for templates using this class) */
.form-control,
input.form-control,
select.form-control,
textarea.form-control {
    display: block;
    width: 100%;
    padding: 0.875rem 1rem;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--gray-800);
    background-color: var(--white);
    background-clip: padding-box;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

.form-control::placeholder {
    color: var(--gray-400);
    opacity: 1;
}

.form-control:hover {
    border-color: var(--gray-300);
}

.form-control:focus {
    color: var(--gray-800);
    background-color: var(--white);
    border-color: var(--primary);
    outline: 0;
    box-shadow: 0 0 0 4px rgba(32, 64, 192, 0.22);
}

.form-control:disabled,
.form-control[readonly] {
    background-color: var(--gray-100);
    opacity: 1;
    cursor: not-allowed;
}

/* Select specific styling */
select.form-control {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    padding-right: 2.5rem;
}

/* Textarea specific styling */
textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

/* Small form control variant */
.form-control-sm {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    border-radius: var(--radius-md);
}

/* Labels in form-group */
.form-group > label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--gray-700);
    font-size: 0.9375rem;
}

.form-hint {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: var(--spacing-xs);
}

.form-error {
    font-size: 0.875rem;
    color: var(--danger);
    margin-top: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.form-checkbox,
.form-radio {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.form-checkbox input,
.form-radio input {
    width: 22px;
    height: 22px;
    accent-color: var(--primary);
    cursor: pointer;
}

/* ==================== Hero Section ==================== */
.hero {
    background: linear-gradient(135deg, var(--dark-900) 0%, var(--dark-800) 50%, var(--dark-700) 100%);
    color: var(--white);
    padding: var(--spacing-4xl) 0;
    position: relative;
    overflow: hidden;
    min-height: 85vh;
    display: flex;
    align-items: center;
}

.hero.hero-image {
    background-image:
        linear-gradient(180deg, rgba(2, 8, 23, 0.55) 0%, rgba(8, 12, 28, 0.5) 50%, rgba(2, 8, 23, 0.7) 100%),
        var(--hero-image);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    margin-top: -90px;
    padding-top: calc(var(--spacing-2xl) + 90px) !important;
    min-height: auto;
}

/* Gradient background */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse 80% 50% at 20% 40%, rgba(32, 64, 192, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(13, 148, 136, 0.24) 0%, transparent 50%),
        radial-gradient(ellipse 40% 30% at 40% 80%, rgba(34, 211, 238, 0.18) 0%, transparent 50%);
}

/* Subtle static overlay pattern */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='4'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 720px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-xl);
    animation: fadeSlideUp 0.6s ease forwards;
}

.hero-badge i {
    color: var(--accent-yellow);
}

.hero h1 {
    font-size: clamp(3rem, 6vw, 4.5rem);
    color: var(--white);
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
    font-weight: 700;
    animation: fadeSlideUp 0.6s ease 0.1s forwards;
    opacity: 0;
}

.hero-highlight {
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-pink) 50%, var(--accent-orange) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: gradientShift 5s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
    animation: fadeSlideUp 0.6s ease 0.2s forwards;
    opacity: 0;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    animation: fadeSlideUp 0.6s ease 0.3s forwards;
    opacity: 0;
}

.hero-actions .btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-green) 100%);
    box-shadow: 0 4px 20px rgba(6, 182, 212, 0.4);
}

.hero-actions .btn-primary:hover {
    box-shadow: 0 8px 30px rgba(6, 182, 212, 0.5);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-3xl);
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    animation: fadeSlideUp 0.6s ease 0.4s forwards;
    opacity: 0;
}

.hero-stat {
    text-align: left;
}

.hero-stat-value {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: var(--white);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.hero-stat-value .gradient-text {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-stat-label {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.5);
}

@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== Section Styles ==================== */
.section {
    padding: var(--spacing-4xl) 0;
    position: relative;
}

.section:nth-of-type(odd) {
    background:
        radial-gradient(ellipse 70% 50% at 85% 20%, rgba(32, 64, 192, 0.12) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 15% 80%, rgba(13, 148, 136, 0.1) 0%, transparent 60%);
}

.section:nth-of-type(even) {
    background:
        radial-gradient(ellipse 70% 50% at 10% 25%, rgba(255, 107, 43, 0.1) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 90% 75%, rgba(251, 191, 36, 0.08) 0%, transparent 55%),
        radial-gradient(ellipse 40% 30% at 50% 50%, rgba(30, 28, 48, 0.15) 0%, transparent 70%);
}

.section::before {
    display: none;
}

.section-image {
    position: relative;
    overflow: hidden;
    background-image:
        linear-gradient(180deg, rgba(17, 16, 24, 0.86) 0%, rgba(17, 16, 24, 0.68) 50%, rgba(17, 16, 24, 0.86) 100%),
        var(--section-image);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.section-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--section-overlay, rgba(17, 16, 24, 0.45));
    opacity: 1;
    pointer-events: none;
}

.section-image.section-dark {
    background-image:
        linear-gradient(135deg, rgba(17, 16, 24, 0.92) 0%, rgba(30, 29, 46, 0.88) 50%, rgba(39, 38, 56, 0.84) 100%),
        var(--section-image);
}

.section-image.section-dark::before {
    opacity: 0.85;
}

.section-image > .container {
    position: relative;
    z-index: 1;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-cyan);
    margin-bottom: var(--spacing-md);
    padding: 8px 18px;
    background: linear-gradient(
        135deg,
        rgba(34, 211, 238, 0.15) 0%,
        rgba(20, 184, 166, 0.1) 100%
    );
    border: 1px solid rgba(34, 211, 238, 0.25);
    border-radius: var(--radius-full);
    box-shadow:
        0 4px 15px rgba(34, 211, 238, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.section-eyebrow i {
    font-size: 0.875rem;
}

.section-eyebrow-warm {
    color: var(--accent-coral);
    background: linear-gradient(
        135deg,
        rgba(249, 115, 22, 0.15) 0%,
        rgba(251, 146, 60, 0.1) 100%
    );
    border-color: rgba(249, 115, 22, 0.25);
    box-shadow:
        0 4px 15px rgba(249, 115, 22, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.1875rem;
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Dark Section */
.section-dark {
    background: linear-gradient(135deg, rgba(17, 16, 24, 0.9), rgba(30, 29, 46, 0.86));
    color: var(--text-primary);
}

.section-dark .section-title {
    color: var(--text-primary);
}

.section-dark .section-subtitle {
    color: var(--text-secondary);
}

/* ==================== Scroll Reveal ==================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition:
        opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
        transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-stagger > * {
    opacity: 0;
    transform: translateY(25px);
    transition:
        opacity 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94),
        transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 80ms; }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 160ms; }
.reveal-stagger.visible > *:nth-child(4) { transition-delay: 240ms; }
.reveal-stagger.visible > *:nth-child(5) { transition-delay: 320ms; }
.reveal-stagger.visible > *:nth-child(6) { transition-delay: 400ms; }
.reveal-stagger.visible > *:nth-child(7) { transition-delay: 480ms; }
.reveal-stagger.visible > *:nth-child(8) { transition-delay: 560ms; }

.reveal-stagger.visible > * {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== Grid ==================== */
.grid {
    display: grid;
    gap: var(--spacing-xl);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .grid-3,
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
    .grid-2,
    .grid-3,
    .grid-4 { grid-template-columns: 1fr; }
}

/* ==================== Alerts ==================== */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    border: 1px solid transparent;
}

.alert-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(52, 211, 153, 0.1));
    border-color: rgba(16, 185, 129, 0.2);
    color: #065F46;
}

.alert-warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(251, 191, 36, 0.1));
    border-color: rgba(245, 158, 11, 0.2);
    color: #92400E;
}

.alert-danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(248, 113, 113, 0.1));
    border-color: rgba(239, 68, 68, 0.2);
    color: #991B1B;
}

.alert-info {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(56, 189, 248, 0.1));
    border-color: rgba(14, 165, 233, 0.2);
    color: #075985;
}

/* ==================== Badge ==================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
}

.badge-success {
    background: linear-gradient(135deg, var(--success), #059669);
    color: var(--white);
}

.badge-warning {
    background: linear-gradient(135deg, var(--warning), #D97706);
    color: var(--white);
}

.badge-danger {
    background: linear-gradient(135deg, var(--danger), #DC2626);
    color: var(--white);
}

.badge-info {
    background: linear-gradient(135deg, var(--info), #0284C7);
    color: var(--white);
}

/* ==================== Footer ==================== */
.footer {
    background:
        linear-gradient(
            180deg,
            rgba(15, 23, 42, 0.94) 0%,
            rgba(15, 23, 42, 1) 100%
        ),
        var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border);
    color: var(--text-secondary);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(
        90deg,
        transparent,
        var(--accent-coral),
        var(--accent-amber),
        var(--accent-teal),
        var(--accent-cyan),
        var(--accent-sky),
        transparent
    );
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-brand {
    color: var(--white);
}

.footer-brand .logo {
    display: inline-flex;
    color: var(--white);
    margin-bottom: var(--spacing-lg);
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 0;
}

.footer-brand .logo:hover {
    color: var(--white);
}

.footer-brand .logo:hover .logo-icon {
    transform: none;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9375rem;
    line-height: 1.8;
}

.footer-title {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-muted);
    transition: all var(--transition-fast);
    font-size: 0.9375rem;
}

.footer-links a i {
    width: 1rem;
    color: var(--text-dim);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-cyan);
    transform: translateX(var(--spacing-xs));
}

.footer-links a:hover i {
    color: var(--accent-cyan);
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 1rem;
    transition: all var(--transition-base);
}

.footer-social a:hover {
    background: linear-gradient(135deg, var(--primary), var(--accent-petrol));
    border-color: transparent;
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(30, 64, 175, 0.3);
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--text-dim);
    font-size: 0.875rem;
}

.footer-bottom p {
    margin: 0;
}

.footer-bottom-links {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-bottom-links a {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-dim);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
    color: var(--accent-cyan);
}

.footer-bottom-links a i {
    font-size: 0.8125rem;
}

/* ==================== Dashboard ==================== */
.dashboard {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--spacing-xl);
    min-height: calc(100vh - 80px);
    padding: var(--spacing-xl) 0;
}

.dashboard-sidebar {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    height: fit-content;
    position: sticky;
    top: 100px;
    border: 1px solid var(--gray-100);
}

.sidebar-nav {
    list-style: none;
}

.sidebar-nav-item {
    margin-bottom: var(--spacing-xs);
}

.sidebar-nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-xl);
    color: var(--gray-600);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.sidebar-nav-link:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.sidebar-nav-link.active {
    background: linear-gradient(135deg, var(--primary), var(--accent-pink));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(32, 64, 192, 0.3);
}

.sidebar-nav-link.admin-link {
    color: var(--warning);
    font-weight: 600;
    border: 1px solid color-mix(in srgb, var(--warning) 30%, transparent);
    background: color-mix(in srgb, var(--warning) 8%, transparent);
}

.sidebar-nav-link.admin-link:hover {
    background: color-mix(in srgb, var(--warning) 15%, transparent);
    color: var(--warning);
}

.sidebar-nav-section {
    list-style: none;
    padding: var(--spacing-sm) var(--spacing-md);
    margin-top: var(--spacing-sm);
}

.sidebar-section-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.dashboard-content {
    padding: var(--spacing-lg) 0;
}

.dashboard-header {
    margin-bottom: var(--spacing-2xl);
}

.dashboard-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.dashboard-subtitle {
    color: var(--gray-500);
    font-size: 1.0625rem;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    border: 1px solid var(--gray-100);
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
}

.stat-card-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    font-size: 1.5rem;
}

.stat-card-icon.purple { 
    background: linear-gradient(135deg, rgba(32, 64, 192, 0.12), rgba(34, 211, 238, 0.1)); 
    color: var(--primary); 
}
.stat-card-icon.cyan { 
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), rgba(52, 211, 153, 0.1)); 
    color: var(--accent-cyan); 
}
.stat-card-icon.orange { 
    background: linear-gradient(135deg, rgba(251, 146, 60, 0.1), rgba(251, 191, 36, 0.1)); 
    color: var(--accent-orange); 
}
.stat-card-icon.pink { 
    background: linear-gradient(135deg, rgba(255, 107, 43, 0.12), rgba(251, 146, 60, 0.1)); 
    color: var(--accent-pink); 
}

.stat-card-value {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-xs);
    line-height: 1;
}

.stat-card-label {
    color: var(--gray-500);
    font-size: 0.9375rem;
}

/* ==================== Animations ==================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.animate-fade-in { animation: fadeIn var(--transition-base) ease; }
.animate-slide-up { animation: slideUp var(--transition-slow) ease; }
.animate-slide-down { animation: slideDown var(--transition-slow) ease; }
.animate-scale-in { animation: scaleIn var(--transition-slow) ease; }

/* Staggered animations */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }

/* Search Form - Sort dropdown */
.search-sort-group .form-select {
    min-width: 180px;
}
.stagger-5 { animation-delay: 0.5s; }

/* ==================== Utilities ==================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--text-primary); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-muted { color: var(--text-muted); }

.bg-white { background: var(--white); }
.bg-gray { background: var(--gray-50); }
.bg-primary { background: var(--primary); }
.bg-gradient { background: linear-gradient(135deg, var(--primary-start), var(--accent-pink)); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.py-1 { padding-top: var(--spacing-sm); padding-bottom: var(--spacing-sm); }
.py-2 { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.py-3 { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-lg); }
.py-4 { padding-top: var(--spacing-xl); padding-bottom: var(--spacing-xl); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }

.hidden { display: none; }
.visible { visibility: visible; }
.invisible { visibility: hidden; }

.rounded-full { border-radius: var(--radius-full); }
.rounded-2xl { border-radius: var(--radius-2xl); }

/* Floating sidebar toggle - hidden by default, shown on tablet/mobile */
.sidebar-floating-toggle {
    display: none;
}

/* ==================== Responsive ==================== */

/* Tablet - Navigation adjustments */
@media (max-width: 1024px) {
    /* Reduce nav link padding on tablets */
    .nav-link {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.875rem;
    }
    
    .nav-links {
        gap: var(--spacing-xs);
    }
    
    /* Hide less important nav items text on smaller tablets */
    .nav-actions .btn {
        padding: 0.5rem 1rem;
    }
}

/* Tablet - Show mobile menu earlier at 900px for better nav handling */
@media (max-width: 900px) {
    .mobile-menu-toggle {
        display: flex !important;
    }
    
    .nav-links {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        height: calc(100vh - 70px);
        background: linear-gradient(180deg, rgba(15, 23, 42, 0.96) 0%, rgba(30, 41, 59, 0.98) 100%);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: stretch;
        padding: var(--spacing-lg) var(--spacing-xl);
        padding-bottom: var(--spacing-3xl);
        gap: var(--spacing-xs);
        z-index: 998;
        overflow-y: auto;
        animation: slideDown 0.25s ease-out;
    }
    
    .nav-links.mobile-open {
        display: flex;
    }
    
    .nav-links li {
        width: 100%;
    }
    
    .nav-links .nav-link {
        display: flex;
        align-items: center;
        width: 100%;
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1.125rem;
        border-radius: var(--radius-lg);
    }
    
    .nav-actions {
        display: none !important;
    }
    
    /* Mobile Auth Items - Show in mobile menu for tablets */
    .mobile-auth-separator {
        display: block !important;
        height: 1px;
        background: rgba(148, 163, 184, 0.2);
        margin: var(--spacing-md) 0;
    }
    
    .mobile-auth-item {
        display: block !important;
    }
}

/* Tablet */
@media (max-width: 1024px) {
    .dashboard {
        grid-template-columns: 1fr;
    }
    
    .dashboard-sidebar {
        position: fixed;
        left: -280px;
        top: 0;
        height: 100vh;
        width: 260px;
        background: linear-gradient(180deg, rgba(15, 23, 42, 0.96) 0%, rgba(30, 41, 59, 0.98) 100%);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        z-index: 1001;
        transition: left 0.3s ease;
        box-shadow: 4px 0 24px rgba(0, 0, 0, 0.4);
        overflow-y: auto;
        padding-top: 70px;
    }
    
    .dashboard-sidebar.mobile-open {
        left: 0;
    }
    
    .mobile-sidebar-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1000;
        display: none;
    }
    
    .mobile-sidebar-overlay.active {
        display: block;
    }
    
    /* Floating sidebar toggle button - positioned at bottom left */
    .sidebar-floating-toggle {
        display: flex !important;
        align-items: center;
        gap: 0.5rem;
        position: fixed;
        bottom: 24px;
        left: 24px;
        padding: 0.875rem 1.25rem;
        border: 1px solid var(--glass-border);
        background: rgba(15, 23, 42, 0.82);
        color: var(--accent-cyan);
        border-radius: 50px;
        cursor: pointer;
        z-index: 999;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3), 0 0 12px rgba(34, 211, 238, 0.1);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        transition: all 0.3s ease;
    }
    
    .sidebar-floating-toggle:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 25px rgba(0, 0, 0, 0.3), 0 0 16px rgba(34, 211, 238, 0.2);
        background: rgba(34, 211, 238, 0.18);
        border-color: rgba(34, 211, 238, 0.4);
        color: #ecfeff;
    }
    
    .sidebar-floating-toggle:active {
        transform: translateY(0);
    }
    
    .sidebar-floating-toggle i {
        font-size: 1.125rem;
    }
    
    .sidebar-floating-toggle span {
        font-size: 0.875rem;
        font-weight: 600;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .dashboard-content {
        padding: var(--spacing-md);
    }
    
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .dashboard-header .flex {
        width: 100%;
        flex-wrap: wrap;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .hero {
        min-height: auto;
        padding: var(--spacing-3xl) 0;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    /* Mobile Menu Toggle - Show on mobile */
    .mobile-menu-toggle {
        display: flex !important;
    }
    
    /* Navbar - Make it relative for positioning */
    .navbar {
        padding: var(--spacing-sm) 0;
        position: relative;
    }
    
    /* Nav Links - Slide-down menu below header */
    .nav-links {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        height: calc(100vh - 70px);
        background: linear-gradient(180deg, rgba(15, 23, 42, 0.96) 0%, rgba(30, 41, 59, 0.98) 100%);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: stretch;
        padding: var(--spacing-lg) var(--spacing-xl);
        padding-bottom: var(--spacing-3xl);
        gap: var(--spacing-xs);
        z-index: 998;
        overflow-y: auto;
        animation: slideDown 0.25s ease-out;
    }
    
    .nav-links.mobile-open {
        display: flex;
    }
    
    .nav-links li {
        width: 100%;
    }
    
    .nav-links .nav-link {
        display: flex;
        align-items: center;
        width: 100%;
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1.125rem;
        border-radius: var(--radius-lg);
        color: var(--gray-700);
        transition: all var(--transition-fast);
    }
    
    .nav-links .nav-link:hover,
    .nav-links .nav-link.active {
        background: linear-gradient(135deg, rgba(32, 64, 192, 0.12), rgba(13, 148, 136, 0.08));
        color: var(--primary);
    }
    
    .nav-links .nav-link i {
        margin-right: var(--spacing-sm);
        width: 24px;
        text-align: center;
    }
    
    /* Nav Actions - Always hidden on mobile, we use inline auth items instead */
    .nav-actions {
        display: none !important;
    }
    
    /* Mobile Auth Items - Show in mobile menu */
    .mobile-auth-separator {
        display: block !important;
        height: 1px;
        background: rgba(148, 163, 184, 0.2);
        margin: var(--spacing-md) 0;
    }
    
    .mobile-auth-item {
        display: block !important;
    }
    
    .mobile-auth-link {
        display: flex;
        align-items: center;
    }
    
    .nav-link-primary {
        background: linear-gradient(135deg, var(--primary-start) 0%, var(--primary-end) 100%) !important;
        color: var(--white) !important;
        font-weight: 600;
    }
    
    .nav-link-primary:hover {
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-end) 100%) !important;
        color: var(--white) !important;
    }
    
    .nav-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .nav-actions .dropdown {
        width: 100%;
    }
    
    .nav-actions .dropdown .dropdown-toggle {
        width: 100%;
        justify-content: center;
    }
    
    /* Slide down animation */
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .logo span {
        display: none;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .footer-bottom-links {
        justify-content: center;
    }
    
    /* Cards responsive */
    .card {
        border-radius: var(--radius-lg);
    }
    
    .card-header,
    .card-body,
    .card-footer {
        padding: var(--spacing-md);
    }
    
    /* Forms responsive */
    .form-control,
    .form-input,
    .form-select,
    .form-textarea {
        padding: 0.75rem 0.875rem;
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    .grid-2 {
        grid-template-columns: 1fr;
    }
    
    /* Tables responsive */
    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    table {
        min-width: 600px;
    }
    
    /* Buttons responsive */
    .btn {
        padding: 0.75rem 1.25rem;
    }
    
    .btn-sm {
        padding: 0.5rem 0.75rem;
        font-size: 0.8125rem;
    }
    
    /* Dashboard header responsive */
    .dashboard-title {
        font-size: 1.5rem;
    }
    
    /* Flex utilities responsive */
    .flex-between {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .flex.gap-2,
    .flex.gap-3 {
        flex-wrap: wrap;
    }
    
    /* Modal responsive - ensure centering is preserved */
    .modal-content,
    .modal {
        width: 95% !important;
        max-width: none !important;
    }
    
    /* Dropdown menu responsive */
    .dropdown-menu {
        min-width: 200px;
    }
}

/* Small mobile */
@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    /* Cards stack full width */
    .card {
        margin-left: calc(-1 * var(--spacing-md));
        margin-right: calc(-1 * var(--spacing-md));
        border-radius: 0;
        border-left: none;
        border-right: none;
    }
    
    /* Stat cards smaller */
    .stat-card {
        padding: var(--spacing-md);
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    /* Avatar sizes */
    .avatar-xl {
        width: 64px;
        height: 64px;
        font-size: 1.25rem;
    }
    
    /* Type selector for resource form */
    .type-selector {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
    
    .type-card {
        min-width: auto;
        padding: var(--spacing-sm);
    }
    
    /* Badges inline */
    .badge {
        font-size: 0.6875rem;
        padding: 0.25rem 0.5rem;
    }
}

/* ==================== Learning Plan Mobile Fixes ==================== */
/* Fix for Issue #23 - Form fields cut off on iPhone */
@media (max-width: 768px) {
    /* Override inline max-width for learning plan cards */
    .container > .card[style*="max-width"] {
        max-width: 100% !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
    }
    
    /* Ensure card body doesn't overflow */
    .card-body {
        padding: var(--spacing-md) !important;
        overflow-x: hidden;
    }
    
    /* Mode cards should stack vertically on mobile */
    .mode-card {
        padding: var(--spacing-md) !important;
    }
    
    /* Duration cards - 2 columns on mobile */
    .grid-4 {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: var(--spacing-sm) !important;
    }
    
    /* Form inputs full width */
    .form-group {
        width: 100%;
    }
    
    /* Ensure form controls are properly sized */
    .form-select,
    .form-input,
    .form-textarea,
    .form-control {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box;
    }
}

@media (max-width: 480px) {
    /* Very small screens - single column for duration */
    .grid-4 {
        grid-template-columns: 1fr !important;
    }
    
    /* Ensure proper padding on mobile */
    .container > .card .card-body {
        padding: var(--spacing-sm) !important;
    }
    
    /* Mode selection grid single column */
    .grid.grid-2 {
        grid-template-columns: 1fr !important;
        gap: var(--spacing-md) !important;
    }
    
    /* Duration cards smaller padding */
    .duration-card {
        padding: var(--spacing-sm) !important;
    }
    
    /* Fix button layout on small screens */
    .flex.gap-2 {
        flex-direction: column !important;
        gap: var(--spacing-sm) !important;
    }
    
    .flex.gap-2 > .btn {
        flex: none !important;
        width: 100% !important;
    }
    
    /* Learning plan form specific */
    h2[style*="font-size"] {
        font-size: 1rem !important;
        line-height: 1.4 !important;
    }
    
    /* Alert info box responsive */
    .alert {
        padding: var(--spacing-sm) var(--spacing-md) !important;
        font-size: 0.875rem !important;
    }
}

/* Ensure desktop layout is properly shown */
@media (min-width: 1025px) {
    .sidebar-floating-toggle {
        display: none !important;
    }
    
    .mobile-sidebar-overlay {
        display: none !important;
    }
    
    .dashboard {
        display: grid !important;
        grid-template-columns: 260px 1fr !important;
        gap: var(--spacing-xl) !important;
    }
    
    .dashboard-sidebar {
        display: block !important;
        position: static !important;
        width: auto !important;
        height: auto !important;
        box-shadow: none !important;
        padding-top: var(--spacing-xl) !important;
        left: 0 !important;
        transform: none !important;
    }
}

/* ==================== Design v11: Floating Glass Navigation ==================== */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-bottom: none;
    transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.header.scrolled {
    background: linear-gradient(to bottom, rgba(2, 8, 23, 0.3) 0%, rgba(2, 8, 23, 0.02) 100%);
    border-bottom: none;
    box-shadow: none;
}

.header .navbar {
    padding: 0;
    gap: var(--spacing-lg);
}

.header .logo {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.4rem 0.9rem 0.4rem 0.45rem;
    border-radius: var(--radius-full);
    background: linear-gradient(
        135deg,
        rgba(30, 41, 59, 0.74) 0%,
        rgba(51, 65, 85, 0.58) 50%,
        rgba(30, 41, 59, 0.74) 100%
    );
    border: 1px solid rgba(148, 163, 184, 0.26);
    box-shadow: 0 8px 24px rgba(2, 8, 23, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.header .logo:hover {
    color: var(--white);
    border-color: rgba(34, 211, 238, 0.34);
    box-shadow: 0 10px 26px rgba(2, 8, 23, 0.35), 0 0 20px rgba(34, 211, 238, 0.18);
    transform: translateY(-1px);
}

.header .logo-icon {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--primary-light) 100%);
    box-shadow: 0 6px 18px rgba(34, 211, 238, 0.35);
}

.header .logo-text {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    background: linear-gradient(135deg, #cffafe 0%, #67e8f9 45%, #a5b4fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header .nav-container {
    display: flex;
    align-items: center;
    padding: var(--spacing-xs);
    border-radius: var(--radius-full);
    background: linear-gradient(
        135deg,
        rgba(30, 41, 59, 0.78) 0%,
        rgba(51, 65, 85, 0.62) 50%,
        rgba(30, 41, 59, 0.78) 100%
    );
    border: 1px solid rgba(148, 163, 184, 0.2);
    box-shadow: 0 8px 24px rgba(2, 8, 23, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.header .nav-links {
    gap: 2px;
}

.header .nav-link {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.9375rem;
    color: #cbd5e1;
    padding: 0.6rem 0.95rem;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    position: relative;
}

.header .nav-link i {
    font-size: 0.85rem;
}

.header .nav-link::after {
    display: none;
}

.header .nav-link:hover {
    color: #ecfeff;
    background: rgba(34, 211, 238, 0.1);
    border-color: rgba(34, 211, 238, 0.25);
}

.header .nav-link.active {
    color: #ecfeff;
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.16), rgba(14, 165, 233, 0.1));
    border: 1px solid rgba(34, 211, 238, 0.3);
    box-shadow: 0 0 12px rgba(34, 211, 238, 0.12);
}

.header .nav-actions {
    gap: var(--spacing-sm);
}

.btn-nav-glass {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-full);
    border: 1px solid rgba(148, 163, 184, 0.26);
    background: linear-gradient(
        135deg,
        rgba(51, 65, 85, 0.72) 0%,
        rgba(30, 41, 59, 0.84) 100%
    );
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    color: #e2e8f0;
    font-weight: 600;
    transition: all var(--transition-base);
    box-shadow: 0 6px 18px rgba(2, 8, 23, 0.24), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.btn-nav-glass:hover {
    color: #f8fafc;
    border-color: rgba(34, 211, 238, 0.34);
    box-shadow: 0 9px 24px rgba(2, 8, 23, 0.32), 0 0 16px rgba(34, 211, 238, 0.18);
    transform: translateY(-1px);
}

.btn-nav-primary {
    background: linear-gradient(
        135deg,
        rgba(34, 211, 238, 0.2) 0%,
        rgba(14, 165, 233, 0.14) 100%
    );
    border-color: rgba(34, 211, 238, 0.36);
    color: #ecfeff;
}

.btn-nav-primary:hover {
    background: linear-gradient(
        135deg,
        rgba(34, 211, 238, 0.3) 0%,
        rgba(14, 165, 233, 0.2) 100%
    );
    border-color: rgba(34, 211, 238, 0.5);
}

.header .nav-actions .dropdown-toggle {
    border-radius: var(--radius-full);
    border: 1px solid rgba(148, 163, 184, 0.26);
    background: linear-gradient(
        135deg,
        rgba(51, 65, 85, 0.72) 0%,
        rgba(30, 41, 59, 0.84) 100%
    );
    color: #e2e8f0;
    padding: 0.5rem 1rem;
    font-size: 0.9375rem;
    height: auto;
    line-height: 1.4;
}

.header .nav-actions .dropdown-toggle:hover {
    border-color: rgba(34, 211, 238, 0.34);
    background: linear-gradient(
        135deg,
        rgba(71, 85, 105, 0.8) 0%,
        rgba(51, 65, 85, 0.92) 100%
    );
    color: #f8fafc;
}

.mobile-menu-toggle {
    display: none !important;
    width: 46px;
    height: 46px;
    padding: 10px;
    border-radius: var(--radius-full);
    border: 1px solid rgba(148, 163, 184, 0.24);
    background: linear-gradient(
        135deg,
        rgba(51, 65, 85, 0.78) 0%,
        rgba(30, 41, 59, 0.9) 100%
    );
    box-shadow: 0 6px 18px rgba(2, 8, 23, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.mobile-menu-toggle:hover {
    border-color: rgba(34, 211, 238, 0.34);
    box-shadow: 0 8px 24px rgba(2, 8, 23, 0.36), 0 0 16px rgba(34, 211, 238, 0.15);
}

.hamburger-line {
    background: #e2e8f0;
}

.mobile-nav-panel {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    display: none;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: calc(78px + var(--spacing-lg)) var(--spacing-lg) var(--spacing-xl);
    background: linear-gradient(
        180deg,
        rgba(15, 23, 42, 0.95) 0%,
        rgba(30, 41, 59, 0.98) 100%
    );
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    z-index: 998;
    overflow-y: auto;
}

.mobile-nav-panel.mobile-open {
    display: flex;
}

.mobile-nav-panel .nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(148, 163, 184, 0.18);
    background: rgba(51, 65, 85, 0.44);
    color: #e2e8f0;
    font-size: 1.125rem;
}

.mobile-nav-panel .nav-link i {
    width: 22px;
    text-align: center;
}

.mobile-nav-panel .nav-link:hover,
.mobile-nav-panel .nav-link.active {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.2), rgba(14, 165, 233, 0.14));
    border-color: rgba(34, 211, 238, 0.34);
    color: #ecfeff;
}

.mobile-nav-panel .mobile-nav-auth {
    margin-top: auto;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(148, 163, 184, 0.24);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.mobile-nav-panel .btn-nav-glass,
.mobile-nav-panel .btn-nav-primary {
    width: 100%;
    justify-content: center;
    padding: 0.85rem 1rem;
}

@media (max-width: 1024px) {
    .header .logo-text {
        font-size: 1.1rem;
    }

    .header .nav-link {
        padding: 0.55rem 0.8rem;
        font-size: 0.875rem;
    }
}

@media (max-width: 900px) {
    .mobile-menu-toggle {
        display: flex !important;
    }

    .header .nav-container,
    .header .nav-actions {
        display: none !important;
    }

    .header .navbar {
        justify-content: space-between;
    }

    .header .logo {
        padding-right: 0.75rem;
    }

    .header {
        padding: var(--spacing-sm) 0;
    }
}

@media (min-width: 901px) {
    .mobile-nav-panel {
        display: none !important;
    }

    body.mobile-menu-open {
        overflow: auto;
    }
}