/**
 * Styles ultra-modernes pour Secure Auth App
 * Inspiré des tendances UI/UX 2025
 */

:root {
    /* Palette de couleurs moderne avec dégradés */
    --primary-gradient: linear-gradient(135deg, #6366f1, #4f46e5);
    --secondary-gradient: linear-gradient(135deg, #ec4899, #d946ef);
    --success-gradient: linear-gradient(135deg, #10b981, #059669);
    --danger-gradient: linear-gradient(135deg, #ef4444, #dc2626);
    --warning-gradient: linear-gradient(135deg, #f59e0b, #d97706);
    --info-gradient: linear-gradient(135deg, #3b82f6, #2563eb);
    
    /* Couleurs plates */
    --primary-color: #4f46e5;
    --primary-dark: #4338ca;
    --secondary-color: #d946ef;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --light-color: #f9fafb;
    --dark-color: #111827;
    
    /* Couleurs de fond */
    --background-color: #f9fafb;
    --card-bg: #ffffff;
    
    /* Couleurs de texte */
    --text-color: #1f2937;
    --text-muted: #6b7280;
    
    /* Éléments de design */
    --border-radius-sm: 0.375rem;
    --border-radius: 0.75rem;
    --border-radius-lg: 1rem;
    --box-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --box-shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Espacement */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
}

/* Styles généraux */
html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: 'Inter', 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    position: relative;
    overflow-x: hidden;
}

/* Polices */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Poppins:wght@300;400;500;600;700&display=swap');

/* Typographie */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--dark-color);
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

h2 {
    font-size: 2rem;
    letter-spacing: -0.025em;
}

h3 {
    font-size: 1.5rem;
}

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

/* Layout principal */
.main-content {
    flex: 1;
    padding: var(--spacing-xl) 0;
    position: relative;
    z-index: 1;
}

/* Effet de fond subtil */
.main-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%234f46e5' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    z-index: -1;
    opacity: 0.5;
}

/* Pied de page */
.footer {
    margin-top: auto;
    padding: var(--spacing-xl) 0;
    background: var(--dark-color);
    color: var(--light-color);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--primary-gradient);
}

/* Container avec effet de verre */
.glass-container {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

/* Navbar */
.navbar {
    box-shadow: var(--box-shadow);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: none;
    padding: var(--spacing-md) 0;
    z-index: 1000;
}

.navbar-dark {
    background: var(--primary-gradient);
}

.navbar-brand {
    font-weight: 700;
    letter-spacing: -0.025em;
    font-size: 1.5rem;
    position: relative;
    padding-left: var(--spacing-md);
}

.navbar-brand::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--light-color);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
}

.nav-link {
    font-weight: 500;
    transition: var(--transition);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    margin: 0 var(--spacing-xs);
}

.nav-link:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.1);
}

.navbar .dropdown-menu {
    border: none;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    animation: dropdownFade 0.3s ease;
}

@keyframes dropdownFade {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.navbar .dropdown-item {
    padding: var(--spacing-sm) var(--spacing-md);
    transition: var(--transition);
}

.navbar .dropdown-item:hover {
    background-color: rgba(79, 70, 229, 0.1);
    color: var(--primary-color);
}

/* Formulaires d'authentification */
.auth-form {
    max-width: 350px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    background-color: var(--card-bg);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.auth-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--primary-gradient);
}

.custom-input {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    margin-bottom: 15px;
}

.custom-button {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.auth-form:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-lg), 0 0 0 1px rgba(79, 70, 229, 0.1);
}

.auth-form h2 {
    margin-bottom: var(--spacing-lg);
    color: var(--dark-color);
    font-weight: 700;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.auth-form h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 4px;
    background: var(--primary-gradient);
    border-radius: 2px;
}

/* Formulaires */
.form-control {
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    border: 1px solid rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    font-size: 0.95rem;
    box-shadow: var(--box-shadow-sm);
    background-color: var(--light-color);
    height: 48px;
    width: 100%;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
    background-color: #fff;
}

.form-label {
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
    display: block;
    font-size: 0.95rem;
}

.form-text {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: var(--spacing-xs);
}

.input-group {
    position: relative;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-sm);
    transition: var(--transition);
}

.input-group:focus-within {
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.input-group-text {
    background-color: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-right: none;
    color: var(--primary-color);
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

.input-group .form-control {
    border-left: none;
    box-shadow: none;
}

.input-group .form-control:focus {
    box-shadow: none;
}

.invalid-feedback {
    font-size: 0.85rem;
    color: var(--danger-color);
    margin-top: var(--spacing-xs);
}

/* Boutons */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    transition: var(--transition);
    text-transform: none;
    letter-spacing: -0.01em;
    position: relative;
    overflow: hidden;
    z-index: 1;
    height: 48px;
    width: 100%;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: -1;
}

.btn:hover::before {
    transform: translateX(0);
}

.btn-primary {
    background: var(--primary-gradient);
    border: none;
    color: white;
    box-shadow: 0 4px 6px rgba(79, 70, 229, 0.15);
}

.btn-primary:hover, .btn-primary:focus {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(79, 70, 229, 0.25);
    background: var(--primary-gradient);
}

.btn-primary:active {
    transform: translateY(0);
}

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

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(79, 70, 229, 0.2);
}

.btn-lg {
    padding: 1rem 2.25rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.d-grid .btn {
    width: 100%;
}

/* QR Code */
.qr-code-container {
    text-align: center;
    margin: var(--spacing-xl) auto;
    padding: var(--spacing-lg);
    background-color: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    max-width: 320px;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.qr-code-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 10% 10%, rgba(79, 70, 229, 0.05) 0%, transparent 70%);
    z-index: 0;
}

.qr-code-container svg {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    position: relative;
    z-index: 1;
    box-shadow: var(--box-shadow-sm);
}

/* Codes de secours */
.backup-codes {
    font-family: 'Roboto Mono', monospace;
    background-color: rgba(249, 250, 251, 0.8);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--box-shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
}

.backup-codes::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 20 20' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%234f46e5' fill-opacity='0.05' fill-rule='evenodd'%3E%3Ccircle cx='3' cy='3' r='3'/%3E%3Ccircle cx='13' cy='13' r='3'/%3E%3C/g%3E%3C/svg%3E");
    border-radius: var(--border-radius);
    z-index: -1;
}

.backup-code {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    margin: var(--spacing-xs);
    background-color: white;
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    box-shadow: var(--box-shadow-sm);
    border: 1px dashed rgba(79, 70, 229, 0.3);
    letter-spacing: 1px;
    font-weight: 500;
    color: var(--primary-color);
    transition: var(--transition);
}

.backup-code:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow);
    border-color: var(--primary-color);
}

/* Cartes */
.card {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
    transition: var(--transition);
    background-color: var(--card-bg);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-lg);
}

.card-header {
    background: var(--primary-gradient);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    font-weight: 600;
    border-bottom: none;
    position: relative;
    overflow: hidden;
}

.card-header::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 150px;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1));
    transform: skewX(-15deg) translateX(50%);
}

.card-body {
    padding: var(--spacing-lg);
}

/* Alertes */
.alert {
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    box-shadow: var(--box-shadow-sm);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.alert::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 4px;
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.05);
    color: var(--success-color);
}

.alert-success::before {
    background: var(--success-gradient);
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.05);
    color: var(--danger-color);
}

.alert-danger::before {
    background: var(--danger-gradient);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.05);
    color: var(--warning-color);
}

.alert-warning::before {
    background: var(--warning-gradient);
}

.alert-info {
    background-color: rgba(59, 130, 246, 0.05);
    color: var(--info-color);
}

.alert-info::before {
    background: var(--info-gradient);
}

.alert-dismissible {
    padding-right: 3rem;
}

.alert .btn-close {
    position: absolute;
    top: 50%;
    right: 1rem;
    transform: translateY(-50%);
    padding: 0.5rem;
    background: transparent;
    border: none;
    font-size: 1.25rem;
    line-height: 1;
    opacity: 0.5;
    transition: var(--transition);
}

.alert .btn-close:hover {
    opacity: 1;
}

/* Badges */
.badge {
    padding: 0.4em 0.8em;
    font-weight: 500;
    border-radius: var(--border-radius-sm);
    letter-spacing: -0.01em;
    box-shadow: var(--box-shadow-sm);
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.badge:hover {
    transform: translateY(-1px);
    box-shadow: var(--box-shadow);
}

.badge.bg-primary {
    background: var(--primary-gradient) !important;
}

.badge.bg-secondary {
    background: var(--secondary-gradient) !important;
}

.badge.bg-success {
    background: var(--success-gradient) !important;
}

.badge.bg-danger {
    background: var(--danger-gradient) !important;
}

.badge.bg-warning {
    background: var(--warning-gradient) !important;
    color: var(--dark-color);
}

.badge.bg-info {
    background: var(--info-gradient) !important;
}

.badge-outline {
    background: transparent;
    border: 1px solid;
}

.badge-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.badge-outline-success {
    color: var(--success-color);
    border-color: var(--success-color);
}

.badge-outline-danger {
    color: var(--danger-color);
    border-color: var(--danger-color);
}

.badge-outline-warning {
    color: var(--warning-color);
    border-color: var(--warning-color);
}

.badge-outline-info {
    color: var(--info-color);
    border-color: var(--info-color);
}

/* Animations */
.fade-in {
    animation: fadeIn 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-in-left {
    animation: slideInLeft 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-in-right {
    animation: slideInRight 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.zoom-in {
    animation: zoomIn 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.bounce {
    animation: bounce 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

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

@keyframes zoomIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Page d'accueil */
.jumbotron {
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(255,255,255,0.7));
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 3rem !important;
    position: relative;
    overflow: hidden;
}

.jumbotron::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    opacity: 0.1;
    z-index: -1;
}

.jumbotron::after {
    content: '';
    position: absolute;
    bottom: -50px;
    left: -50px;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    opacity: 0.1;
    z-index: -1;
}

/* Icônes */
.feature-icon {
    font-size: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
    .auth-form {
        padding: 1.5rem;
        margin: 1rem;
    }
    
    .card-body {
        padding: 1.25rem;
    }
    
    .jumbotron {
        padding: 2rem !important;
    }
}

/* Tableaux */
.table {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.05);
    background-color: white;
    margin-bottom: var(--spacing-lg);
}

.table thead {
    background: linear-gradient(to right, rgba(79, 70, 229, 0.05), rgba(79, 70, 229, 0.02));
}

.table th {
    font-weight: 600;
    border-top: none;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--primary-color);
    font-size: 0.95rem;
    letter-spacing: 0.01em;
    text-transform: uppercase;
    border-bottom: 2px solid rgba(79, 70, 229, 0.1);
}

.table td {
    padding: var(--spacing-md) var(--spacing-lg);
    vertical-align: middle;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

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

.table tbody tr:hover {
    background-color: rgba(79, 70, 229, 0.02);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* Dashboard */
.dashboard-card {
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: var(--spacing-lg);
    background-color: white;
    margin-bottom: var(--spacing-lg);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.dashboard-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-lg);
}

.dashboard-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--primary-gradient);
}

.dashboard-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--dark-color);
}

.dashboard-card-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.dashboard-card-subtitle {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.dashboard-card-icon {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    font-size: 2.5rem;
    color: rgba(79, 70, 229, 0.1);
}

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

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

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