/* Reset et base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-success: #16a34a;
    --color-error: #dc2626;
    --color-warning: #d97706;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-bg: #f3f4f6;
    --color-white: #ffffff;
    --color-border: #d1d5db;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius: 8px;
    --transition: 150ms ease;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

/* Container principal */
.auth-container {
    width: 100%;
    max-width: 400px;
    background: var(--color-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 2rem;
}

/* Header */
.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-logo {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.auth-subtitle {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

/* Formulaire */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-white);
    color: var(--color-text);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-input::placeholder {
    color: var(--color-text-light);
}

.form-input.error {
    border-color: var(--color-error);
}

/* Checkbox Remember Me */
.form-checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-checkbox {
    width: 1.125rem;
    height: 1.125rem;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.form-checkbox-label {
    font-size: 0.875rem;
    color: var(--color-text);
    cursor: pointer;
    user-select: none;
}

/* Boutons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background-color var(--transition), transform var(--transition);
}

.btn:active {
    transform: scale(0.98);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-primary {
    width: 100%;
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-dark);
}

.btn-secondary {
    background-color: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-border);
}

/* Messages d'erreur et succès */
.message {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    display: none;
}

.message.visible {
    display: block;
}

.message-error {
    background-color: #fef2f2;
    border: 1px solid #fecaca;
    color: var(--color-error);
}

.message-success {
    background-color: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: var(--color-success);
}

.message-warning {
    background-color: #fffbeb;
    border: 1px solid #fde68a;
    color: var(--color-warning);
}

/* Spinner de chargement */
.spinner {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* Page de logout */
.logout-container {
    text-align: center;
}

.logout-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.logout-message {
    font-size: 1.125rem;
    color: var(--color-text);
    margin-bottom: 1.5rem;
}

/* Footer */
.auth-footer {
    margin-top: 1.5rem;
    text-align: center;
    font-size: 0.75rem;
    color: var(--color-text-light);
}

/* Responsive */
@media (max-width: 480px) {
    .auth-container {
        padding: 1.5rem;
    }

    .auth-title {
        font-size: 1.25rem;
    }
}

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

.auth-container {
    animation: fadeIn 0.3s ease;
}