/**
 * Aditya Graphics Creative Institute - GOLDEN PREMIUM THEME
 * Luxury, elite, high-end design system for professional EdTech platform
 */

/* =============================================
   CSS VARIABLES - GOLDEN PREMIUM DESIGN SYSTEM
   ============================================= */
:root {
    /* Primary Colors - Gold Theme */
    --primary: #D4AF37;
    --primary-dark: #C9A227;
    --primary-light: #E8D090;

    /* Secondary Colors - Gold Variants */
    --secondary: #B8942C;
    --accent: #D4AF37;
    --warning: #C9A227;
    --error: #DC2626;
    --info: #D4AF37;

    /* Neutral Colors - Dark Luxury Palette */
    --dark: #0A0A0A;
    --dark-light: #111111;
    --dark-lighter: #1A1A1A;

    --light: #EDEDED;
    --light-dark: #D9D9D9;
    --light-darker: #B8B8B8;

    --gray-50: #FAFAFA;
    --gray-100: #F5F5F5;
    --gray-200: #EDEDED;
    --gray-300: #D9D9D9;
    --gray-400: #B8B8B8;
    --gray-500: #9E9E9E;
    --gray-600: #757575;
    --gray-700: #424242;
    --gray-800: #1A1A1A;
    --gray-900: #0D0D0D;

    /* Text Colors - Premium Palette */
    --text-primary: #EDEDED;
    --text-secondary: #B8B8B8;
    --text-muted: #9E9E9E;
    --text-white: #FFFFFF;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows - Soft Gold Glow */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.15);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.25);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
    --shadow-gold: 0 0 30px rgba(212, 175, 55, 0.15);
    --shadow-gold-lg: 0 0 50px rgba(212, 175, 55, 0.25);

    /* 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);

    /* Z-Index */
    --z-dropdown: 1000;
    --z-modal: 1050;
    --z-tooltip: 1100;
}

/* =============================================
   RESET & BASE STYLES
   ============================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Space Grotesk', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #0A0A0A 0%, #111111 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    letter-spacing: 0.02em;
}

/* =============================================
   TYPOGRAPHY
   ============================================= */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Cinzel', serif;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: 0.03em;
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.25rem;
}

h3 {
    font-size: 1.875rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1.125rem;
}

p {
    margin-bottom: var(--space-4);
    color: var(--text-secondary);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--primary-dark);
}

/* =============================================
   LAYOUT
   ============================================= */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--space-6);
}

/* Grid System get */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 calc(var(--space-4) * -1);
}

[class*="col-"] {
    padding: 0 var(--space-4);
}

.col-12 {
    flex: 0 0 100%;
    max-width: 100%;
}

.col-6 {
    flex: 0 0 50%;
    max-width: 50%;
}

.col-4 {
    flex: 0 0 33.333%;
    max-width: 33.333%;
}

.col-3 {
    flex: 0 0 25%;
    max-width: 25%;
}

@media (min-width: 768px) {
    .col-md-12 {
        flex: 0 0 100%;
        max-width: 100%;
    }

    .col-md-6 {
        flex: 0 0 50%;
        max-width: 50%;
    }

    .col-md-4 {
        flex: 0 0 33.333%;
        max-width: 33.333%;
    }

    .col-md-3 {
        flex: 0 0 25%;
        max-width: 25%;
    }
}

@media (min-width: 1024px) {
    .col-lg-12 {
        flex: 0 0 100%;
        max-width: 100%;
    }

    .col-lg-6 {
        flex: 0 0 50%;
        max-width: 50%;
    }

    .col-lg-4 {
        flex: 0 0 33.333%;
        max-width: 33.333%;
    }

    .col-lg-3 {
        flex: 0 0 25%;
        max-width: 25%;
    }
}

/* =============================================
   NAVIGATION
   ============================================= */
.navbar {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(212, 175, 55, 0.1);
    padding: var(--space-4) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-text {
    color: var(--text-primary);
}

.text-primary {
    color: var(--primary) !important;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-base);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--primary);
}

.nav-link:hover::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-base);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }
}

/* =============================================
   BUTTONS
   ============================================= */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #0A0A0A;
    box-shadow: 0 4px 12px rgba(212, 175, 55, 0.4), 0 0 20px rgba(212, 175, 55, 0.2);
    font-weight: 700;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(212, 175, 55, 0.6), 0 0 30px rgba(212, 175, 55, 0.3);
    color: #0A0A0A;
}

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: #0A0A0A;
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.4);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: 1.125rem;
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: 0.875rem;
}

/* =============================================
   CARDS & GLASS EFFECTS
   ============================================= */
.glass-card {
    background: rgba(26, 26, 26, 0.6);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-md), 0 0 1px rgba(212, 175, 55, 0.5);
    border: 1px solid rgba(212, 175, 55, 0.3);
    transition: all var(--transition-base);
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl), var(--shadow-gold);
    border-color: rgba(212, 175, 55, 0.5);
}

.card {
    background: rgba(26, 26, 26, 0.8);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm), 0 0 1px rgba(212, 175, 55, 0.3);
    border: 1px solid rgba(212, 175, 55, 0.2);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-lg), var(--shadow-gold);
    transform: translateY(-2px);
    border-color: rgba(212, 175, 55, 0.4);
}

/* =============================================
   FORMS
   ============================================= */
.form-group {
    margin-bottom: var(--space-6);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-control {
    width: 100%;
    padding: var(--space-4);
    font-size: 1rem;
    color: var(--text-primary);
    background: rgba(26, 26, 26, 0.5);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2), var(--shadow-gold);
    background: rgba(26, 26, 26, 0.7);
}

.form-control::placeholder {
    color: var(--text-muted);
}

/* =============================================
   ALERTS
   ============================================= */
.alert {
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-6);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 500;
}

.alert-success {
    background: #d1fae5;
    color: #047857;
    border-left: 4px solid #10b981;
}

.alert-error {
    background: #fee2e2;
    color: #dc2626;
    border-left: 4px solid #ef4444;
}

.alert-warning {
    background: #fef3c7;
    color: #d97706;
    border-left: 4px solid #f59e0b;
}

.alert-info {
    background: #dbeafe;
    color: #1d4ed8;
    border-left: 4px solid #3b82f6;
}

/* =============================================
   BADGES
   ============================================= */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-md);
}

.badge-success {
    background: #d1fae5;
    color: #047857;
}

.badge-warning {
    background: #fef3c7;
    color: #d97706;
}

.badge-error {
    background: #fee2e2;
    color: #dc2626;
}

.badge-primary {
    background: #ede9fe;
    color: #6366f1;
}

/* =============================================
   UTILITIES
   ============================================= */
.text-center {
    text-align: center;
}

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

.text-right {
    text-align: right;
}

.mt-4 {
    margin-top: var(--space-4);
}

.mt-6 {
    margin-top: var(--space-6);
}

.mt-8 {
    margin-top: var(--space-8);
}

.mb-4 {
    margin-bottom: var(--space-4);
}

.mb-6 {
    margin-bottom: var(--space-6);
}

.mb-8 {
    margin-bottom: var(--space-8);
}

.p-4 {
    padding: var(--space-4);
}

.p-6 {
    padding: var(--space-6);
}

.p-8 {
    padding: var(--space-8);
}

/* =============================================
   ANIMATIONS
   ============================================= */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.slide-in-up {
    animation: slideInUp 0.6s ease-out;
}

/* =============================================
   RESPONSIVE & MOBILE-FRIENDLY STYLES
   ============================================= */

/* Tablet (1024px and below) */
@media (max-width: 1024px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    h3 {
        font-size: 1.75rem;
    }
    
    .row {
        gap: var(--space-4);
    }
}

/* Mobile (768px and below) */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    h3 {
        font-size: 1.5rem;
    }

    .container {
        padding: 0 var(--space-4);
    }
    
    /* Navigation */
    .navbar {
        padding: var(--space-3) 0;
    }
    
    .nav-menu {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(20px);
        padding: var(--space-6);
        flex-direction: column;
        gap: var(--space-4);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        max-height: calc(100vh - 70px);
        overflow-y: auto;
        z-index: 999;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu a {
        padding: var(--space-3) 0;
        border-bottom: 1px solid rgba(212, 175, 55, 0.1);
        font-size: 1.1rem;
    }
    
    .nav-actions {
        flex-direction: column;
        gap: var(--space-3);
        width: 100%;
    }
    
    .nav-actions .btn {
        width: 100%;
        justify-content: center;
        padding: var(--space-3) var(--space-4);
    }
    
    .mobile-menu-toggle {
        display: flex !important;
    }
    
    /* Grid System */
    .row {
        flex-direction: column;
    }
    
    .col-12,
    .col-md-4,
    .col-md-6,
    .col-md-8,
    .col-lg-3,
    .col-lg-4,
    .col-lg-6 {
        width: 100%;
        max-width: 100%;
    }
    
    /* Cards */
    .glass-card,
    .card {
        padding: var(--space-5);
    }
    
    /* Buttons */
    .btn {
        padding: var(--space-3) var(--space-5);
        font-size: 0.95rem;
    }
    
    .btn-sm {
        padding: 0.625rem var(--space-4);
    }
    
    /* Forms */
    .form-control {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: var(--space-3);
    }
    
    .form-label {
        font-size: 0.95rem;
    }
    
    /* Tables */
    table {
        font-size: 0.875rem;
    }
    
    table thead {
        display: none;
    }
    
    table,
    table tbody,
    table tr,
    table td {
        display: block;
        width: 100%;
    }
    
    table tr {
        margin-bottom: var(--space-4);
        border: 1px solid rgba(212, 175, 55, 0.2);
        border-radius: var(--radius-lg);
        padding: var(--space-3);
    }
    
    table td {
        text-align: right;
        padding: var(--space-2) var(--space-3);
        position: relative;
        padding-left: 50%;
    }
    
    table td::before {
        content: attr(data-label);
        position: absolute;
        left: var(--space-3);
        text-align: left;
        font-weight: 600;
        color: var(--primary);
    }
}

/* Small Mobile (480px and below) */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    h1 {
        font-size: 1.75rem;
        line-height: 1.3;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.25rem;
    }
    
    .container {
        padding: 0 var(--space-3);
    }
    
    /* Tighter spacing on small screens */
    section {
        padding: var(--space-8) 0;
    }
    
    .glass-card,
    .card {
        padding: var(--space-4);
    }
    
    /* Stack buttons vertically */
    .btn-group,
    .form-actions {
        flex-direction: column;
        gap: var(--space-2);
    }
    
    .btn-group .btn,
    .form-actions .btn {
        width: 100%;
    }
    
    /* Smaller badges */
    .badge {
        padding: 0.35rem 0.75rem;
        font-size: 0.75rem;
    }
}

/* Touch-friendly tap targets (minimum 44x44px) */
@media (pointer: coarse) {
    .btn,
    .nav-menu a,
    .mobile-menu-toggle,
    button,
    a.btn,
    input[type="checkbox"],
    input[type="radio"] {
        min-height: 44px;
        min-width: 44px;
    }
    
    .form-control,
    .form-select {
        min-height: 48px;
        font-size: 16px; /* Prevents zoom */
    }
}

/* Landscape orientation mobile fixes */
@media (max-height: 500px) and (orientation: landscape) {
    .navbar {
        padding: var(--space-2) 0;
    }
    
    .nav-menu {
        max-height: calc(100vh - 60px);
        padding: var(--space-4);
    }
}

/* =============================================
   MAIN CONTENT AREA
   ============================================= */
.main-content {
    min-height: calc(100vh - 80px);
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
    background: var(--dark);
    color: var(--light);
    padding: var(--space-12) 0 var(--space-6) 0;
    margin-top: var(--space-16);
}

.footer h6 {
    color: var(--light);
    margin-bottom: var(--space-4);
}

.footer p,
.footer a {
    color: var(--gray-400);
    font-size: 0.9rem;
}

.footer a:hover {
    color: var(--primary-light);
}