/* ==================================================
   Authentication Pages - Modern Glassmorphism Style
   สำหรับหน้า Login, Register, Forgot Password, etc.
   ================================================== */

/* Auth Container - Full Screen with Gradient Background */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
    position: relative;
    overflow: hidden;
}

/* Animated Background Elements */
.auth-container::before,
.auth-container::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.03);
    animation: float 20s infinite ease-in-out;
}

.auth-container::before {
    width: 400px;
    height: 400px;
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

.auth-container::after {
    width: 300px;
    height: 300px;
    bottom: -80px;
    left: -80px;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -30px) scale(1.1); }
}

/* Auth Card - Glassmorphism Effect */
.auth-card {
    width: 100%;
    max-width: 420px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.08),
        0 2px 8px rgba(0, 0, 0, 0.04),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.5);
    padding: var(--spacing-xl);
    position: relative;
    z-index: 1;
    animation: slideUp 0.4s ease;
}

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

/* Auth Header */
.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.auth-logo {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-md);
    background: var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 1.5rem;
    font-weight: 700;
}

.auth-title {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.auth-subtitle {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    font-weight: 400;
}

/* Auth Form */
.auth-form {
    margin-bottom: var(--spacing-md);
}

.auth-form .form-group {
    margin-bottom: var(--spacing-md);
}

.auth-form .form-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.auth-form .form-control {
    padding: 0.875rem 1rem;
    font-size: 0.9375rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-white);
    transition: all var(--transition-fast);
}

.auth-form .form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.04);
    background-color: var(--color-white);
}

.auth-form .form-control::placeholder {
    color: var(--color-text-muted);
    opacity: 0.6;
}

/* Auth Submit Button */
.auth-submit-btn {
    width: 100%;
    padding: 0.875rem;
    font-size: 0.9375rem;
    font-weight: 600;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.auth-submit-btn:hover:not(:disabled) {
    background: var(--color-secondary);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.auth-submit-btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.auth-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.auth-submit-btn .spinner-border {
    margin-right: var(--spacing-xs);
}

/* Auth Footer */
.auth-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

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

.auth-footer-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.auth-footer-link:hover {
    color: var(--color-secondary);
    text-decoration: underline;
}

/* Auth Hint */
.auth-hint {
    text-align: center;
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.02);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.auth-hint-text {
    font-size: 0.8125rem;
    color: var(--color-text-light);
    margin: 0;
}

.auth-hint-credentials {
    font-family: 'Courier New', monospace;
    font-size: 0.8125rem;
    color: var(--color-text);
    font-weight: 500;
    margin-top: var(--spacing-xs);
}

/* Validation Messages */
.validation-message {
    color: var(--color-error);
    font-size: 0.8125rem;
    margin-top: 0.25rem;
    display: block;
}

/* Remember Me Checkbox */
.auth-checkbox-group {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.auth-checkbox {
    margin-right: var(--spacing-xs);
    width: 18px;
    height: 18px;
    cursor: pointer;
}

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

/* Forgot Password Link */
.auth-forgot-link {
    display: inline-block;
    font-size: 0.875rem;
    color: var(--color-text-light);
    text-decoration: none;
    margin-top: var(--spacing-xs);
    transition: color var(--transition-fast);
}

.auth-forgot-link:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

/* Divider */
.auth-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: var(--spacing-lg) 0;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--color-border);
}

.auth-divider-text {
    padding: 0 var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* Social Login Buttons (for future use) */
.auth-social-btn {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: var(--spacing-sm);
    font-size: 0.9375rem;
    font-weight: 500;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-white);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-social-btn:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

/* Responsive */
@media (max-width: 480px) {
    .auth-card {
        padding: var(--spacing-lg);
    }

    .auth-title {
        font-size: 1.5rem;
    }

    .auth-container::before,
    .auth-container::after {
        display: none;
    }
}