/* Tailwind CSS base styles */
@import url('https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css');

/* Custom properties pour le design system */
:root {
    /* Colors */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;

    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* 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;

    /* Typography */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'Fira Code', monospace;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 0 1px rgba(59, 130, 246, 0.3), 0 0 0 4px rgba(59, 130, 246, 0.1);

    /* Borders */
    --border-radius-sm: 0.125rem;
    --border-radius-md: 0.375rem;
    --border-radius-lg: 0.5rem;
    --border-radius-xl: 0.75rem;
    --border-radius-2xl: 1rem;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-medium: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-backdrop: blur(10px);
}

/* Base styles */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: #ffffff;
    background: linear-gradient(135deg, #0f1419 0%, #1a202c 100%);
    background-attachment: fixed;
}

/* Typography */
.font-inter {
    font-family: var(--font-sans);
}

.text-gradient {
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Glassmorphism effects */
.glass {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
}

.glass-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--border-radius-xl);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 0.875rem;
    line-height: 1.25rem;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

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

.btn-primary {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px 0 rgba(59, 130, 246, 0.6);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-ghost {
    background: transparent;
    color: #9ca3af;
    border: 1px solid transparent;
}

.btn-ghost:hover {
    color: white;
    background: rgba(255, 255, 255, 0.05);
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: #e5e7eb;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-md);
    color: white;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: var(--shadow-glow);
    background: rgba(255, 255, 255, 0.08);
}

.form-input::placeholder {
    color: #9ca3af;
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23111827'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1.25rem 1.25rem;
    padding-right: 2.5rem;
}

/* Contraste lisible pour tous les select */
select,
select.form-input,
.form-select {
    color: #111827 !important; /* text noir */
}

/* Cards */
.card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-xl);
    padding: 1.5rem;
    transition: all var(--transition-medium);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(255, 255, 255, 0.15);
}

.card-header {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.card-body {
    flex: 1;
}

.card-footer {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Course Cards (Netflix-style) */
.course-card {
    position: relative;
    aspect-ratio: 16/9;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-medium);
}

.course-card:hover {
    transform: scale(1.05);
}

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

.course-card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    padding: 1.5rem;
    color: white;
}

.course-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.course-card-meta {
    font-size: 0.875rem;
    color: #d1d5db;
    display: flex;
    gap: 1rem;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

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

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

.animate-slide-in {
    animation: slideIn 0.4s ease-out;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Alerts */
.alert {
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius-md);
    margin-bottom: 1rem;
    border: 1px solid transparent;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border-color: rgba(34, 197, 94, 0.3);
    color: #4ade80;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.3);
    color: #f87171;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.3);
    color: #fbbf24;
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
    color: #60a5fa;
}

/* Loading states */
.loading {
    position: relative;
    color: transparent;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 1rem;
    height: 1rem;
    margin: -0.5rem 0 0 -0.5rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Responsive design */
@media (max-width: 768px) {
    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.8125rem;
    }
    
    .card {
        padding: 1rem;
    }
    
    .course-card-overlay {
        padding: 1rem;
    }
}

/* Focus states for accessibility */
.focus-visible {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}

/* Dark mode enhancements */
@media (prefers-color-scheme: dark) {
    :root {
        --glass-bg: rgba(255, 255, 255, 0.03);
        --glass-border: rgba(255, 255, 255, 0.06);
    }
} 

/* Menu mobile styles */
#mobile-menu {
    transform: translateY(-10px);
    opacity: 0;
    transition: all 0.3s ease-in-out;
}

#mobile-menu:not(.hidden) {
    transform: translateY(0);
    opacity: 1;
}

/* Animation du bouton hamburger */
#mobile-menu-btn {
    position: relative;
    z-index: 1000;
    transition: all 0.3s ease;
}

#mobile-menu-btn svg {
    transition: all 0.3s ease;
}

#mobile-menu-btn.menu-open svg {
    transform: rotate(90deg);
}

/* Animation des lignes du hamburger */
#mobile-menu-btn .hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background: currentColor;
    margin: 4px 0;
    transition: all 0.3s ease;
    transform-origin: center;
}

#mobile-menu-btn.menu-open .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

#mobile-menu-btn.menu-open .hamburger-line:nth-child(2) {
    opacity: 0;
}

#mobile-menu-btn.menu-open .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Amélioration responsive du menu mobile */
@media (max-width: 768px) {
    #mobile-menu {
        animation: slideDown 0.3s ease-out;
    }
    
    #mobile-menu.hidden {
        animation: slideUp 0.3s ease-out;
    }
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(0);
        opacity: 1;
    }
    to {
        transform: translateY(-100%);
        opacity: 0;
    }
}

/* Classes utilitaires supplémentaires */
.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Styles pour l'impression */
@media print {
    .bg-gray-900 { 
        background: white !important; 
        color: black !important;
    }
    .text-white { 
        color: black !important; 
    }
    .bg-gray-800\/50 { 
        background: #f3f4f6 !important; 
        border: 1px solid #d1d5db !important; 
    }
    .border-gray-700 { 
        border-color: #d1d5db !important; 
    }
    nav, .print\:hidden { 
        display: none !important; 
    }
}