/**
 * BLACK HISTORY ARTS - Styles Principaux
 * Theme: Dark Prestige
 */

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
    /* Colors */
    --gold: #D4AF37;
    --gold-light: #F4E4C1;
    --gold-dark: #C4A137;
    --dark-bg: #0A0A0A;
    --card-bg: #141414;
    --text-primary: #E8E8E8;
    --text-secondary: #999;
    --border-color: rgba(212, 175, 55, 0.15);

    /* Semantic colors */
    --success: #2E7D32;
    --success-light: #81C784;
    --error: #D32F2F;
    --error-light: #E57373;
    --warning: #F9A825;
    --info: #1976D2;

    /* Typography */
    --font-title: 'Bebas Neue', sans-serif;
    --font-body: 'Montserrat', sans-serif;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 50%;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-gold: 0 8px 24px rgba(212, 175, 55, 0.15);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.4s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-title);
    letter-spacing: 2px;
    line-height: 1.2;
}

h1 { font-size: 56px; }
h2 { font-size: 42px; }
h3 { font-size: 32px; }
h4 { font-size: 24px; }
h5 { font-size: 20px; }
h6 { font-size: 18px; }

p {
    margin-bottom: var(--spacing-sm);
}

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

a:hover {
    color: var(--gold-light);
}

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

.container-sm {
    max-width: 800px;
}

.container-lg {
    max-width: 1400px;
}

/* ============================================
   HEADER
   ============================================ */
header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-family: var(--font-title);
    font-size: 32px;
    color: var(--gold);
    text-decoration: none;
    letter-spacing: 2px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: var(--spacing-lg);
}

nav a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color var(--transition-normal);
}

nav a:hover,
nav a.active {
    color: var(--gold);
}

/* ============================================
   MAIN CONTENT
   ============================================ */
main {
    min-height: calc(100vh - 200px);
    padding: var(--spacing-xl) 0;
}

/* ============================================
   FOOTER
   ============================================ */
footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    margin-top: 96px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
    font-family: var(--font-title);
    font-size: 24px;
    color: var(--gold);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 1px;
}

.footer-section ul {
    list-style: none;
}

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    line-height: 2;
    transition: color var(--transition-normal);
}

.footer-section a:hover {
    color: var(--gold);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 13px;
}

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

.social-links a {
    color: var(--text-secondary);
    font-size: 20px;
    transition: color var(--transition-normal);
}

.social-links a:hover {
    color: var(--gold);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    padding: 14px 32px;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: all var(--transition-normal);
    display: inline-block;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gold);
    color: var(--dark-bg);
}

.btn-primary:hover {
    background: var(--gold-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
}

.btn-outline {
    background: transparent;
    color: var(--gold);
    border: 2px solid var(--gold);
}

.btn-outline:hover {
    background: var(--gold);
    color: var(--dark-bg);
}

.btn-lg {
    padding: 18px 48px;
    font-size: 16px;
}

.btn-sm {
    padding: 10px 20px;
    font-size: 13px;
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-gold);
}

.card-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    background: #1a1a1a;
}

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

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

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.form-required {
    color: var(--gold);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 14px 16px;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 15px;
    font-family: var(--font-body);
    transition: border-color var(--transition-normal);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--gold);
}

.form-textarea {
    resize: vertical;
    min-height: 150px;
}

/* ============================================
   FLASH MESSAGES
   ============================================ */
.flash-message {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid;
}

.flash-message.success {
    background: rgba(46, 125, 50, 0.1);
    border-color: var(--success);
    color: var(--success-light);
}

.flash-message.error {
    background: rgba(211, 47, 47, 0.1);
    border-color: var(--error);
    color: var(--error-light);
}

/* ============================================
   PAGE HEADERS
   ============================================ */
.page-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.page-title {
    font-family: var(--font-title);
    font-size: 56px;
    color: var(--gold);
    letter-spacing: 3px;
    margin-bottom: var(--spacing-sm);
}

.page-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
}

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

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

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

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

.grid-auto {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

/* ============================================
   PAGINATION
   ============================================ */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-xl);
}

.page-link {
    padding: 10px 16px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-normal);
}

.page-link:hover,
.page-link.active {
    background: var(--gold);
    color: var(--dark-bg);
    border-color: var(--gold);
}

/* ============================================
   BACK LINK
   ============================================ */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--gold);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    transition: gap var(--transition-normal);
}

.back-link:hover {
    gap: var(--spacing-sm);
}

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

.text-gold { color: var(--gold); }
.text-muted { color: var(--text-secondary); }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.hidden { display: none; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 968px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    h1, .page-title { font-size: 40px; }
    h2 { font-size: 32px; }
}

@media (max-width: 768px) {
    nav ul {
        gap: var(--spacing-sm);
    }

    nav a {
        font-size: 12px;
    }

    .logo {
        font-size: 24px;
    }

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

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

    h1, .page-title { font-size: 36px; }
}

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn var(--transition-slow) ease-out;
}

.slide-up {
    animation: slideUp var(--transition-slow) ease-out;
}