/* =====================================
   AUTHENTICATION PAGES - Apple-Inspired Design
   ===================================== */

:root {
    /* Apple-inspired color palette */
    --primary: #007aff;
    --primary-dark: #0056b3;
    --accent: #34c759;
    --warning: #ff9500;
    --error: #ff3b30;
    
    /* Neutral palette */
    --white: #ffffff;
    --gray-50: #f9f9f9;
    --gray-100: #f5f5f7;
    --gray-200: #e5e5e7;
    --gray-300: #d2d2d7;
    --gray-400: #a1a1a6;
    --gray-500: #86868b;
    --gray-600: #6e6e73;
    --gray-700: #515154;
    --gray-800: #1d1d1f;
    --gray-900: #000000;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    
    /* Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-full: 50%;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Auth Container */
.auth-container {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 50%, var(--gray-100) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    font-family: var(--font-family);
}

/* Auth Card */
.auth-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: 
        var(--shadow-lg),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
    overflow: hidden;
    width: 100%;
    max-width: 420px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Auth Header */
.auth-header {
    background: linear-gradient(135deg, var(--white) 0%, var(--gray-50) 100%);
    padding: var(--spacing-2xl) var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    border-bottom: 1px solid var(--gray-200);
}

.auth-title {
    color: var(--gray-800);
    font-size: 1.75rem;
    font-weight: var(--font-weight-semibold);
    margin: 0;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.auth-title i {
    color: var(--primary);
    font-size: 1.5rem;
}

.auth-subtitle {
    color: var(--gray-600);
    font-size: 0.95rem;
    margin: var(--spacing-sm) 0 0 0;
    font-weight: var(--font-weight-regular);
}

/* Auth Body */
.auth-body {
    padding: var(--spacing-xl);
}

/* Form Groups */
.auth-form-group {
    margin-bottom: var(--spacing-lg);
}

.auth-form-group:last-child {
    margin-bottom: 0;
}

/* Labels */
.auth-label {
    display: block;
    color: var(--gray-800);
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

/* Inputs */
.auth-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md);
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: var(--font-family);
    font-weight: var(--font-weight-regular);
    color: var(--gray-800);
    background: var(--white);
    transition: var(--transition-normal);
    box-sizing: border-box;
}

.auth-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 
        0 0 0 3px rgba(0, 122, 255, 0.1),
        var(--shadow-sm);
    transform: translateY(-1px);
}

.auth-input::placeholder {
    color: var(--gray-500);
    font-weight: var(--font-weight-regular);
}

/* Checkbox */
.auth-checkbox-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: var(--spacing-lg) 0;
}

.auth-checkbox {
    width: 18px;
    height: 18px;
    border: 1.5px solid var(--gray-400);
    border-radius: 4px;
    background: var(--white);
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    flex-shrink: 0;
}

.auth-checkbox:checked {
    background: var(--primary);
    border-color: var(--primary);
}

.auth-checkbox:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--white);
    font-size: 12px;
    font-weight: bold;
}

.auth-checkbox-label {
    color: var(--gray-700);
    font-size: 0.9rem;
    cursor: pointer;
    user-select: none;
}

/* Buttons */
.auth-button {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family);
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    box-shadow: 
        0 2px 8px rgba(0, 122, 255, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    margin: var(--spacing-lg) 0;
}

.auth-button:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #003d82 100%);
    transform: translateY(-1px);
    box-shadow: 
        0 4px 12px rgba(0, 122, 255, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.auth-button:active {
    transform: translateY(0);
    box-shadow: 
        0 2px 4px rgba(0, 122, 255, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.auth-button i {
    font-size: 1.1rem;
}

/* Secondary Button */
.auth-button-secondary {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
    box-shadow: none;
}

.auth-button-secondary:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.2);
}

/* Google Button */
.auth-button-google {
    background: linear-gradient(135deg, #4285f4 0%, #3367d6 100%);
    color: var(--white);
    border: none;
    box-shadow: 
        0 2px 8px rgba(66, 133, 244, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.auth-button-google:hover {
    background: linear-gradient(135deg, #3367d6 0%, #2248b8 100%);
    color: var(--white);
    transform: translateY(-1px);
    box-shadow: 
        0 4px 12px rgba(66, 133, 244, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    text-decoration: none;
}

.auth-button-google:active {
    transform: translateY(0);
    box-shadow: 
        0 2px 4px rgba(66, 133, 244, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.auth-button-google i {
    font-size: 1.1rem;
    color: var(--white);
}

/* Links */
.auth-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.auth-link:hover {
    color: var(--primary-dark);
    text-decoration: none;
}

/* Divider */
.auth-divider {
    display: flex;
    align-items: center;
    margin: var(--spacing-xl) 0;
    color: var(--gray-500);
    font-size: 0.9rem;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--gray-300);
}

.auth-divider::before {
    margin-right: var(--spacing-md);
}

.auth-divider::after {
    margin-left: var(--spacing-md);
}

/* Footer */
.auth-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
    text-align: center;
    background: var(--gray-50);
    border-top: 1px solid var(--gray-200);
}

.auth-footer-text {
    color: var(--gray-600);
    font-size: 0.9rem;
    margin: 0;
}

/* Alerts */
.auth-alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-lg);
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
}

.auth-alert-error {
    background: rgba(255, 59, 48, 0.1);
    color: var(--error);
    border: 1px solid rgba(255, 59, 48, 0.2);
}

.auth-alert-success {
    background: rgba(52, 199, 89, 0.1);
    color: var(--accent);
    border: 1px solid rgba(52, 199, 89, 0.2);
}

.auth-alert-info {
    background: rgba(0, 122, 255, 0.1);
    color: var(--primary);
    border: 1px solid rgba(0, 122, 255, 0.2);
}

/* Test Account Info */
.auth-test-info {
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.05) 0%, rgba(0, 122, 255, 0.1) 100%);
    border: 1px solid rgba(0, 122, 255, 0.2);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.auth-test-info-title {
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: var(--font-weight-semibold);
    margin: 0 0 var(--spacing-xs) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.auth-test-info-content {
    color: var(--gray-700);
    font-size: 0.8rem;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    line-height: 1.4;
    margin: 0;
}

/* Responsive Design */
@media (max-width: 480px) {
    .auth-container {
        padding: var(--spacing-md);
    }
    
    .auth-card {
        max-width: 100%;
    }
    
    .auth-header {
        padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-md);
    }
    
    .auth-body {
        padding: var(--spacing-lg);
    }
    
    .auth-footer {
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .auth-title {
        font-size: 1.5rem;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    .auth-input,
    .auth-button,
    .auth-checkbox,
    .auth-link {
        transition: none;
    }
}

/* Form Errors */
.form-error-message {
    color: var(--error);
    font-size: 0.85rem;
    margin-top: var(--spacing-xs);
    display: block;
    font-weight: var(--font-weight-medium);
}

.auth-input.is-invalid {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(255, 59, 48, 0.1);
}

.auth-input.is-invalid:focus {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(255, 59, 48, 0.2);
}

/* Form validation */
.form-errors {
    margin-top: var(--spacing-xs);
}

.form-errors ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.form-errors li {
    color: var(--error);
    font-size: 0.85rem;
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-medium);
}

/* Focus states for accessibility */
.auth-button:focus,
.auth-checkbox:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}