/* Variables CSS personnalisées */
:root {
    --primary-color: #4f46e5;
    --primary-dark: #3730a3;
    --secondary-color: #6366f1;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --light-bg: #f8fafc;
    --dark-text: #1e293b;
    --muted-text: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

/* Reset et styles de base */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

.login-container {
    min-height: 100vh;
    position: relative;
}

/* Section gauche avec branding */
.login-left {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.9) 0%, rgba(99, 102, 241, 0.9) 100%);
    background-size: cover;
    background-position: center;
    position: relative;
}

.login-left::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.8) 0%, rgba(99, 102, 241, 0.8) 100%);
}

.login-left>div {
    position: relative;
    z-index: 2;
}

.brand-logo {
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }
}

/* Section droite avec formulaire */
.login-form-container {
    width: 100%;
    max-width: 400px;
    padding: 2rem;
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    margin: 1rem;
    position: relative;
    overflow: hidden;
}

.login-form-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

/* Styles des formulaires */
.form-label {
    font-weight: 600;
    color: var(--dark-text);
    margin-bottom: 0.5rem;
}

.form-control {
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    background-color: #fafafa;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(79, 70, 229, 0.15);
    background-color: white;
    transform: translateY(-1px);
}

.form-control.is-invalid {
    border-color: var(--danger-color);
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-5px);
    }

    75% {
        transform: translateX(5px);
    }
}

.form-control.is-valid {
    border-color: var(--success-color);
}

/* Boutons */
.btn {
    border-radius: 12px;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: all 0.3s ease;
    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 0.5s;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border: none;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(79, 70, 229, 0.4);
}

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

.btn-outline-primary:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
}

.btn-outline-secondary {
    border: 2px solid var(--border-color);
    color: var(--muted-text);
}

.btn-outline-secondary:hover {
    background: var(--light-bg);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* Input group */
.input-group .btn {
    border-radius: 0 12px 12px 0;
}

.input-group .form-control {
    border-radius: 12px 0 0 12px;
}

/* Checkbox personnalisé */
.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.form-check-input:focus {
    box-shadow: 0 0 0 0.2rem rgba(79, 70, 229, 0.15);
}

/* Liens */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Modal */
.modal-content {
    border-radius: 20px;
    border: none;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    padding: 1.5rem;
}

/* Animations d'entrée */
.login-form-container {
    animation: slideInUp 0.6s ease-out;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Spinner de chargement */
.spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

/* Messages d'alerte */
.alert {
    border-radius: 12px;
    border: none;
    font-weight: 500;
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

/* Responsive */
@media (max-width: 991.98px) {
    body {
        background: var(--light-bg);
    }

    .login-form-container {
        margin: 1rem;
        box-shadow: var(--shadow);
    }
}

@media (max-width: 575.98px) {
    .login-form-container {
        margin: 0.5rem;
        padding: 1.5rem;
        border-radius: 16px;
    }

    .btn-lg {
        padding: 0.75rem 1rem;
        font-size: 1rem;
    }
}

/* États de focus pour l'accessibilité */
.btn:focus,
.form-control:focus,
.form-check-input:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Amélioration des contrastes */
.text-muted {
    color: var(--muted-text) !important;
}

/* Animation pour les icônes */
.fas {
    transition: transform 0.3s ease;
}

.btn:hover .fas {
    transform: scale(1.1);
}

.h-100 {
    height: 100vh !important;
}