/*Variables*/
:root {
    --brand:       #F9B104;
    --brand-dark:  #e6a000;
    --brand-light: #fff8e1;
}
.login-container,
.register-container {
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
    justify-content: center;
}

.register-container {
    padding: 2rem 0;
}

.login-card,
.register-card {
    border: none;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.12);
    overflow: hidden;
}

/* Headers */
.login-header,
.register-header {
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
    color: #1a1a1a;
    padding: 2rem 1.5rem;
    border: none;
}

.login-header h4,
.register-header h4 {
    font-weight: 700;
    margin: 0;
}

/* Bodies */
.login-body,
.register-body {
    padding: 2rem 2.5rem;
}

/* Card sécurité */
.security-card {
    border: 2px solid var(--brand-light);
    border-radius: 12px;
    background: #fefefe;
}

.security-card .card-title {
    color: var(--brand-dark);
    font-weight: 600;
}

/* Labels */
.form-label {
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 0.5rem;
}

/* Champs de saisie */
.form-control {
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(249, 177, 4, 0.1);
}

.form-control.is-invalid {
    border-color: #dc3545;
}

.form-control.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

.form-check-input:checked {
    background-color: var(--brand);
    border-color: var(--brand);
}

.form-check-input:focus {
    box-shadow: 0 0 0 3px rgba(249, 177, 4, 0.15);
}

.btn-login,
.btn-register {
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
    color: #1a1a1a;
    border: none;
    border-radius: 10px;
    padding: 0.875rem;
    font-weight: 600;
    font-size: 1.05rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(249, 177, 4, 0.3);
}

.btn-login:hover,
.btn-register:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(249, 177, 4, 0.4);
    color: white;
}

.link-brand {
    color: var(--brand-dark);
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s ease;
}

.link-brand:hover {
    color: var(--brand);
    text-decoration: underline;
}

.alert {
    border-radius: 10px;
    border: none;
}

.alert-success {
    background: #d4edda;
    color: #155724;
}

.alert-danger {
    background: #f8d7da;
    color: #721c24;
}

.alert-warning {
    background: var(--brand-light);
    color: #856404;
}

.password-strength {
    height: 4px;
    border-radius: 2px;
    margin-top: 8px;
    background: #e2e8f0;
    overflow: hidden;
}

.password-strength-bar {
    height: 100%;
    transition: width 0.3s ease, background 0.3s ease;
    width: 0%;
}

.strength-weak {
    background: #dc3545;
    width: 33%;
}

.strength-medium {
    background: #ffc107;
    width: 66%;
}

.strength-strong {
    background: #198754;
    width: 100%;
}