/* Modern Login Page Styles */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    padding: var(--space-6);
    position: relative;
    overflow: hidden;
}

.login-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.login-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-3xl);
    padding: var(--space-10) var(--space-8);
    max-width: 480px;
    width: 100%;
    box-shadow: var(--shadow-xl);
    position: relative;
    z-index: 1;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.logo-section {
    text-align: center;
    margin-bottom: var(--space-10);
}

.logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--brand-primary), var(--accent-purple));
    border-radius: var(--radius-2xl);
    margin-bottom: var(--space-6);
    box-shadow: var(--shadow-lg);
    position: relative;
}

.logo::after {
    content: 'I';
    color: white;
    font-size: 32px;
    font-weight: 800;
    font-family: var(--font-family);
}

.logo-section h1 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: var(--space-3);
    background: linear-gradient(135deg, var(--brand-primary), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
    line-height: 1.6;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-10);
}

.feature {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-5);
    background: var(--bg-tertiary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-primary);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--brand-primary), var(--accent-purple));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.feature:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--brand-primary);
}

.feature:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    font-size: 24px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--brand-tertiary);
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.feature-text h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.feature-text p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.login-section {
    margin-bottom: var(--space-8);
}

.logged-user {
    text-align: center;
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-5);
    background: var(--bg-tertiary);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-6);
    border: 1px solid var(--border-primary);
}

.user-avatar {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 3px solid var(--brand-primary);
}

.user-details {
    flex: 1;
    text-align: left;
}

.user-details h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.user-details p {
    font-size: 14px;
    color: var(--text-secondary);
}

.user-actions {
    display: flex;
    gap: var(--space-3);
    justify-content: center;
}

.continue-btn {
    background: var(--brand-primary);
    color: white;
    padding: var(--space-4) var(--space-8);
    border-radius: var(--radius-xl);
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    box-shadow: var(--shadow-sm);
}

.continue-btn:hover {
    background: var(--brand-secondary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.logout-btn {
    background: transparent;
    color: var(--text-secondary);
    padding: var(--space-4) var(--space-6);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: all var(--transition-fast);
}

.logout-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-secondary);
}

.google-login-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    width: 100%;
    padding: var(--space-4) var(--space-6);
    background: var(--bg-surface);
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-xl);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.google-login-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.google-login-btn:hover {
    border-color: var(--brand-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.google-login-btn:hover::before {
    left: 100%;
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    margin-top: var(--space-4);
    font-size: 14px;
    text-align: center;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.footer {
    text-align: center;
    font-size: 12px;
    color: var(--text-tertiary);
    line-height: 1.5;
}

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

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

/* Theme Toggle for Login */
.login-theme-toggle {
    position: fixed;
    top: var(--space-6);
    right: var(--space-6);
    width: 48px;
    height: 48px;
    background: var(--bg-surface);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.login-theme-toggle:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    transform: scale(1.05);
}

/* Loading Animation */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.loading-overlay.show {
    opacity: 1;
    visibility: visible;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-primary);
    border-top: 3px solid var(--brand-primary);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
    .login-container {
        padding: var(--space-4);
    }
    
    .login-card {
        padding: var(--space-8) var(--space-6);
    }
    
    .features {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }
    
    .feature {
        padding: var(--space-4);
    }
    
    .logo-section h1 {
        font-size: 28px;
    }
    
    .subtitle {
        font-size: 14px;
    }
    
    .user-actions {
        flex-direction: column;
    }
    
    .continue-btn,
    .logout-btn {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .login-card {
        padding: var(--space-6) var(--space-4);
    }
    
    .logo {
        width: 64px;
        height: 64px;
    }
    
    .logo::after {
        font-size: 24px;
    }
    
    .logo-section h1 {
        font-size: 24px;
    }
    
    .user-info {
        flex-direction: column;
        text-align: center;
    }
    
    .user-details {
        text-align: center;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.6s ease-out;
}

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

.slide-up {
    animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Focus States */
.google-login-btn:focus {
    outline: 2px solid var(--brand-primary);
    outline-offset: 2px;
}

.continue-btn:focus,
.logout-btn:focus {
    outline: 2px solid var(--brand-primary);
    outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .login-card {
        border-width: 2px;
    }
    
    .feature {
        border-width: 2px;
    }
    
    .google-login-btn {
        border-width: 3px;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .login-container::before {
        display: none;
    }
}