/**
 * Thème Moderne PSA - Lignes de Bus Mulhouse
 * Framework: Bootstrap 5 + Alpine.js
 * Palette: PSA Blue + Couleurs tournées
 */

/* ====================================
   VARIABLES CSS
   ==================================== */
:root {
    /* Palette Principale PSA */
    --psa-blue-primary: #002F5F;
    --psa-blue-light: #0056A6;
    --psa-blue-dark: #001A3D;
    --psa-blue-pale: #E3F2FD;
    
    /* Couleurs Tournées */
    --tournee-1: #FF6B6B;  /* Rouge */
    --tournee-2: #4ECDC4;  /* Turquoise */
    --tournee-3: #FFD93D;  /* Jaune */
    --tournee-4: #A8E6CF;  /* Vert menthe */
    --tournee-5: #FFB6C1;  /* Rose */
    
    /* Neutres */
    --grey-50: #F8F9FA;
    --grey-100: #E9ECEF;
    --grey-200: #DEE2E6;
    --grey-300: #CED4DA;
    --grey-400: #ADB5BD;
    --grey-500: #6C757D;
    --grey-600: #495057;
    --grey-700: #343A40;
    --grey-800: #212529;
    --grey-900: #1A1D21;
    
    /* Statuts */
    --success: #198754;
    --warning: #FFC107;
    --danger: #DC3545;
    --info: #0DCAF0;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --line-height-base: 1.5;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 1rem;
    
    /* 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease-in-out;
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--grey-800);
    background: linear-gradient(135deg, var(--grey-50) 0%, var(--psa-blue-pale) 100%);
    min-height: 100vh;
}

/* ====================================
   NAVBAR MODERNE
   ==================================== */
.modern-navbar {
    background: linear-gradient(135deg, var(--psa-blue-primary) 0%, var(--psa-blue-light) 100%);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-md) 0;
}

.modern-navbar .navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition-fast);
}

.modern-navbar .navbar-brand:hover {
    transform: translateY(-2px);
    color: var(--psa-blue-pale);
}

.modern-navbar .nav-link {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.modern-navbar .nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

/* ====================================
   CARDS MODERNES
   ==================================== */
.modern-card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    transition: var(--transition-base);
    border: 1px solid var(--grey-200);
}

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

.modern-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--grey-100);
}

.modern-card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--psa-blue-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

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

.modern-label {
    display: block;
    font-weight: 600;
    color: var(--grey-700);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.modern-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--grey-200);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    transition: var(--transition-fast);
    background: white;
}

.modern-input:focus {
    outline: none;
    border-color: var(--psa-blue-primary);
    box-shadow: 0 0 0 3px var(--psa-blue-pale);
}

.modern-input:hover {
    border-color: var(--grey-300);
}

.modern-input.is-invalid {
    border-color: var(--danger);
}

.modern-input.is-valid {
    border-color: var(--success);
}

/* ====================================
   BOUTONS MODERNES
   ==================================== */
.modern-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: var(--transition-base);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.modern-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.modern-btn:hover::before {
    width: 300px;
    height: 300px;
}

.modern-btn-primary {
    background: linear-gradient(135deg, var(--psa-blue-primary), var(--psa-blue-light));
    color: white;
    box-shadow: var(--shadow-md);
}

.modern-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.modern-btn-secondary {
    background: var(--grey-200);
    color: var(--grey-700);
}

.modern-btn-secondary:hover {
    background: var(--grey-300);
}

.modern-btn-success {
    background: var(--success);
    color: white;
}

.modern-btn-danger {
    background: var(--danger);
    color: white;
}

.modern-btn-lg {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

.modern-btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
}

/* ====================================
   BADGES & TAGS
   ==================================== */
.modern-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-tournee-1 { background: var(--tournee-1); color: white; }
.badge-tournee-2 { background: var(--tournee-2); color: white; }
.badge-tournee-3 { background: var(--tournee-3); color: var(--grey-800); }
.badge-tournee-4 { background: var(--tournee-4); color: var(--grey-800); }
.badge-tournee-5 { background: var(--tournee-5); color: var(--grey-800); }

/* ====================================
   TABLES MODERNES
   ==================================== */
.modern-table {
    width: 100%;
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.modern-table thead {
    background: linear-gradient(135deg, var(--psa-blue-primary), var(--psa-blue-light));
    color: white;
}

.modern-table th {
    padding: var(--spacing-lg);
    font-weight: 600;
    text-align: left;
    text-transform: uppercase;
    font-size: var(--font-size-sm);
    letter-spacing: 0.5px;
}

.modern-table td {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--grey-100);
    vertical-align: middle;
}

.modern-table tbody tr {
    transition: var(--transition-fast);
}

.modern-table tbody tr:hover {
    background: var(--psa-blue-pale);
    transform: scale(1.01);
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

/* ====================================
   ALERTS & TOASTS
   ==================================== */
.modern-alert {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.modern-alert-success {
    background: #D1FAE5;
    color: #065F46;
    border-left: 4px solid var(--success);
}

.modern-alert-danger {
    background: #FEE2E2;
    color: #991B1B;
    border-left: 4px solid var(--danger);
}

.modern-alert-warning {
    background: #FEF3C7;
    color: #92400E;
    border-left: 4px solid var(--warning);
}

.modern-alert-info {
    background: #DBEAFE;
    color: #1E40AF;
    border-left: 4px solid var(--info);
}

/* ====================================
   LOADING SPINNER
   ==================================== */
.modern-spinner {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    border: 3px solid var(--grey-200);
    border-top-color: var(--psa-blue-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ====================================
   FOOTER MODERNE
   ==================================== */
.modern-footer {
    background: var(--grey-900);
    color: var(--grey-300);
    padding: var(--spacing-2xl) 0;
    margin-top: var(--spacing-2xl);
}

.modern-footer a {
    color: var(--psa-blue-pale);
    text-decoration: none;
    transition: var(--transition-fast);
}

.modern-footer a:hover {
    color: white;
}

/* ====================================
   RESPONSIVE UTILITIES
   ==================================== */
@media (max-width: 768px) {
    .modern-card {
        padding: var(--spacing-lg);
    }
    
    .modern-navbar .navbar-brand {
        font-size: 1.25rem;
    }
    
    .modern-table {
        font-size: var(--font-size-sm);
    }
    
    .modern-table th,
    .modern-table td {
        padding: var(--spacing-sm);
    }
}

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

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

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in-right {
    animation: slideInRight 0.5s ease-out;
}

/* ====================================
   ACCESSIBILITÉ
   ==================================== */
.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;
}

/* Focus visible pour accessibilité clavier */
*:focus-visible {
    outline: 3px solid var(--psa-blue-primary);
    outline-offset: 2px;
}

/* ====================================
   DARK MODE (optionnel)
   ==================================== */
@media (prefers-color-scheme: dark) {
    :root {
        --grey-50: #1A1D21;
        --grey-900: #F8F9FA;
    }
    
    body {
        background: linear-gradient(135deg, #1A1D21 0%, #002F5F 100%);
        color: var(--grey-100);
    }
    
    .modern-card {
        background: var(--grey-800);
        border-color: var(--grey-700);
    }
}