/**
 * MindUp - Styles CSS
 * Thème: Fond noir, boutons violet foncé, texte blanc
 * Design: Mobile-first, responsive, moderne
 */

/* ========== Variables CSS ========== */
:root {
    /* Couleurs principales */
    --bg-primary: #000000;
    --bg-secondary: #1a1a1a;
    --bg-card: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    
    /* Violet foncé pour les boutons */
    --purple-dark: #4a148c;
    --purple-medium: #6a1b9a;
    --purple-light: #8e24aa;
    --purple-hover: #7b1fa2;
    
    /* Couleurs d'accent */
    --accent-success: #4caf50;
    --accent-danger: #f44336;
    --accent-warning: #ff9800;
    --accent-info: #2196f3;
    
    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 50%;
    
    /* Ombres */
    --shadow-sm: 0 2px 8px rgba(138, 43, 226, 0.1);
    --shadow-md: 0 4px 16px rgba(138, 43, 226, 0.2);
    --shadow-lg: 0 8px 32px rgba(138, 43, 226, 0.3);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ========== Typography ========== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

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

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

a:hover {
    color: var(--purple-medium);
}

/* ========== Container & Layout ========== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.main-content {
    padding: var(--spacing-md);
    padding-bottom: 100px; /* Espace pour le FAB */
    min-height: calc(100vh - 60px);
}

/* ========== Header & Navigation ========== */
.header {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--purple-dark) 100%);
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

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

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

.nav-link {
    color: var(--text-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.nav-link.active {
    background-color: var(--purple-medium);
}

/* Menu burger pour mobile */
.burger-menu {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.burger-line {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* ========== Boutons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--purple-dark) 0%, var(--purple-medium) 100%);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--purple-medium) 0%, var(--purple-light) 100%);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--bg-card);
    color: var(--text-primary);
    border: 2px solid var(--purple-dark);
}

.btn-secondary:hover {
    background-color: var(--purple-dark);
    border-color: var(--purple-medium);
}

.btn-danger {
    background-color: var(--accent-danger);
    color: var(--text-primary);
}

.btn-danger:hover {
    background-color: #d32f2f;
    transform: translateY(-2px);
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.875rem;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-full);
}

/* Bouton flottant (FAB) */
.fab {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--purple-dark) 0%, var(--purple-medium) 100%);
    color: var(--text-primary);
    border: none;
    border-radius: var(--radius-full);
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    z-index: 90;
    display: flex;
    align-items: center;
    justify-content: center;
}

.fab:hover {
    transform: scale(1.1) rotate(90deg);
    box-shadow: 0 12px 40px rgba(138, 43, 226, 0.4);
}

.fab:active {
    transform: scale(0.95);
}

/* ========== Cards ========== */
.card {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid rgba(138, 43, 226, 0.2);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-color: var(--purple-medium);
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.card-content {
    color: var(--text-secondary);
}

/* Grid de cards */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

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

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

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    background-color: var(--bg-secondary);
    border: 2px solid var(--bg-card);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--purple-medium);
    box-shadow: 0 0 0 3px rgba(138, 43, 226, 0.2);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-file {
    display: none;
}

.file-upload-label {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 12px 24px;
    background-color: var(--bg-card);
    border: 2px dashed var(--purple-dark);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.file-upload-label:hover {
    border-color: var(--purple-medium);
    background-color: var(--bg-secondary);
}

/* ========== Modal ========== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
}

/* ========== Alerts ========== */
.alert {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.alert-success {
    background-color: rgba(76, 175, 80, 0.2);
    border-left: 4px solid var(--accent-success);
    color: var(--accent-success);
}

.alert-error {
    background-color: rgba(244, 67, 54, 0.2);
    border-left: 4px solid var(--accent-danger);
    color: var(--accent-danger);
}

.alert-warning {
    background-color: rgba(255, 152, 0, 0.2);
    border-left: 4px solid var(--accent-warning);
    color: var(--accent-warning);
}

.alert-info {
    background-color: rgba(33, 150, 243, 0.2);
    border-left: 4px solid var(--accent-info);
    color: var(--accent-info);
}

/* ========== Avatar ========== */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--purple-medium);
}

.avatar-large {
    width: 100px;
    height: 100px;
}

/* ========== Liste ========== */
.list {
    list-style: none;
}

.list-item {
    background-color: var(--bg-card);
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    border-radius: var(--radius-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.list-item:hover {
    background-color: var(--bg-secondary);
    border-left-color: var(--purple-medium);
    transform: translateX(4px);
}

/* ========== Badge ========== */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    background-color: var(--purple-dark);
    color: var(--text-primary);
}

/* ========== Loader ========== */
.loader {
    border: 4px solid var(--bg-card);
    border-top: 4px solid var(--purple-medium);
    border-radius: var(--radius-full);
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ========== Page de connexion ========== */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--spacing-md);
}

.login-card {
    background-color: var(--bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    text-align: center;
    max-width: 400px;
    width: 100%;
}

.login-logo {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.google-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 12px 24px;
    background-color: white;
    color: #333;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.google-btn:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* ========== Responsive Design ========== */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background-color: var(--bg-secondary);
        flex-direction: column;
        padding: var(--spacing-lg);
        transition: left var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .burger-menu {
        display: flex;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
    
    .fab {
        bottom: 16px;
        right: 16px;
        width: 56px;
        height: 56px;
    }
    
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
}

@media (max-width: 480px) {
    .main-content {
        padding: var(--spacing-sm);
    }
    
    .modal-content {
        width: 95%;
        padding: var(--spacing-md);
    }
}

/* ========== Utilitaires ========== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.hidden { display: none; }