/* ==========================================
   MODERN NOTIFICATION SETTINGS - ENHANCED UI
   Mobile-First, Cool Animations, Beautiful UX
   ALIGNED WITH APP THEME (Light Mode)
   ========================================== */

/* Root Variables - Aligned with modern-theme.css */
:root {
    /* Use existing theme colors */
    --primary-color: #0056b3; /* PH Blue from theme */
    --primary-light: #1976d2;
    --primary-dark: #004494;
    --secondary-color: #5a6268;
    --success-color: #198754;
    --danger-color: #d32f2f;
    --warning-color: #fbc02d;
    
    /* Light theme backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f0f2f5;
    
    /* Light theme text */
    --text-primary: #212529;
    --text-secondary: #495057;
    --text-muted: #6c757d;
    
    /* Borders and shadows */
    --border-color: rgba(0, 86, 179, 0.15);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Border radius from theme */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}


/* Page Container */
.notification-settings-page {
    min-height: 100vh;
    background: var(--bg-tertiary); /* Use theme background */
    padding-bottom: 4rem;
}

/* ==================== HEADER SECTION ==================== */

.settings-header {
    margin-bottom: 2rem;
    animation: slideDown 0.4s ease-out;
}


.header-content {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.icon-container {
    position: relative;
    width: 64px;
    height: 64px;
    flex-shrink: 0;
}

.icon-container i {
    position: relative;
    z-index: 2;
    font-size: 2rem;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 16px rgba(0, 86, 179, 0.25);
}

.icon-pulse {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-color);
    border-radius: var(--radius-lg);
    opacity: 0.2;
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.2;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.1;
    }
}

.header-text h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 0.25rem 0;
}

.header-text p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin: 0;
}

/* Quick Stats */
.quick-stats {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.stat-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    background: var(--bg-secondary);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.stat-badge i {
    font-size: 1rem;
}

.stat-badge.active {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-color: var(--primary-color);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 86, 179, 0.3);
    transform: translateY(-2px);
}

/* ==================== SETTINGS CARD ==================== */

.settings-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 1.75rem;
    margin-bottom: 1.25rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
    animation: fadeInUp 0.4s ease-out;
}

.settings-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

/* Stagger Animation */
.stagger-animation {
    animation: fadeInUp 0.5s ease-out;
    animation-delay: var(--stagger-delay, 0s);
    animation-fill-mode: both;
}

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

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

/* Section Header */
.section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.section-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.section-icon.push {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
}

.section-icon.email {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
}

.section-icon.sound {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
    color: white;
}

.section-icon.quiet {
    background: linear-gradient(135deg, #6366f1, #4f46e5);
    color: white;
}

.section-icon.batch {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

.section-title h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 0.25rem 0;
}

.section-title p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
}

/* ==================== SETTINGS LIST ==================== */

.settings-list {
    display: flex;
    flex-direction: column;
}

.setting-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 0;
    gap: 1rem;
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.setting-item:last-child {
    border-bottom: none;
}

.setting-item.nested {
    padding-left: 1.5rem;
    background: var(--bg-secondary);
    margin: 0 -1.75rem;
    padding-left: 3.25rem;
    padding-right: 1.75rem;
}

.setting-item:hover {
    background: var(--bg-secondary);
    margin: 0 -1.75rem;
    padding-left: 1.75rem;
    padding-right: 1.75rem;
}

.setting-item.nested:hover {
    background: var(--bg-tertiary);
}

.setting-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

.setting-content.full-width {
    flex-direction: column;
    align-items: stretch;
}

.setting-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.125rem;
    flex-shrink: 0;
}

.setting-text {
    flex: 1;
}

.setting-text h3 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 0.25rem 0;
}

.setting-text p {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.4;
}

.help-text {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin: 0.5rem 0 0 0;
}

/* ==================== TOGGLE SWITCH ==================== */

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 52px;
    height: 28px;
    cursor: pointer;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    transition: var(--transition-base);
    border-radius: 28px;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: var(--transition-base);
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-switch input:checked + .toggle-slider {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
}

.toggle-switch input:focus + .toggle-slider {
    box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.2);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(24px);
}

.toggle-switch:hover .toggle-slider {
    opacity: 0.9;
}

/* ==================== VOLUME SLIDER ==================== */

.slider-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.volume-badge {
    padding: 0.375rem 0.75rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(0, 86, 179, 0.25);
}

.volume-control {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.volume-slider {
    flex: 1;
    height: 6px;
    border-radius: 3px;
    background: var(--border-color);
    outline: none;
    -webkit-appearance: none;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 86, 179, 0.4);
    transition: all var(--transition-base);
}

.volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 86, 179, 0.5);
}

.volume-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 8px rgba(0, 86, 179, 0.4);
    transition: all var(--transition-base);
}

.volume-slider::-moz-range-thumb:hover {
    transform: scale(1.1);
}

/* ==================== SELECT INPUTS ==================== */

.form-select-modern {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-base);
    cursor: pointer;
}

.form-select-modern:hover {
    border-color: var(--primary-light);
    background: var(--bg-secondary);
}

.form-select-modern:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.1);
}

.number-input {
    width: 80px;
    padding: 0.625rem 1rem;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-weight: 600;
    text-align: center;
    transition: all var(--transition-base);
}

.number-input:hover {
    border-color: var(--primary-light);
}

.number-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.1);
}

/* ==================== TIME RANGE DISPLAY ==================== */

.time-range-display {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-lg);
    margin: 1rem 0;
    color: white;
    box-shadow: 0 8px 20px rgba(79, 70, 229, 0.3);
}

.time-indicator {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-size: 1.125rem;
    font-weight: 600;
    flex: 1;
}

.time-indicator i {
    font-size: 1.5rem;
    opacity: 0.9;
}

.time-separator {
    font-size: 1.25rem;
    opacity: 0.8;
}

/* ==================== TIME PICKER GROUP ==================== */

.time-picker-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    padding: 1.25rem 0;
}

.time-picker label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.time-picker i {
    color: var(--primary-color);
}

.time-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-weight: 500;
    transition: all var(--transition-base);
}

.time-input:hover {
    border-color: var(--primary-light);
    background: var(--bg-secondary);
}

.time-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.1);
}

/* ==================== QUIET MODE SELECTOR ==================== */

.quiet-mode-selector {
    padding: 1.25rem 0;
}

.mode-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.mode-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.75rem;
}

.mode-option {
    cursor: pointer;
    margin: 0;
}

.mode-option input[type="radio"] {
    display: none;
}

.mode-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.25rem 1rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    text-align: center;
}

.mode-card i {
    font-size: 1.75rem;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.mode-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.mode-card p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin: 0;
}

.mode-option:hover .mode-card {
    border-color: var(--primary-light);
    background: var(--bg-tertiary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.mode-option.active .mode-card {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-color: var(--primary-color);
    box-shadow: 0 8px 20px rgba(0, 86, 179, 0.3);
    transform: translateY(-2px);
}

.mode-option.active .mode-card i,
.mode-option.active .mode-card .mode-name,
.mode-option.active .mode-card p {
    color: white;
}

/* ==================== PRIVACY NOTICE ==================== */

.privacy-notice {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    background: rgba(0, 86, 179, 0.05);
    border-left: 4px solid var(--primary-color);
    border-radius: var(--radius-md);
    margin: 1.5rem 0;
    animation: fadeInUp 0.5s ease-out;
}

.privacy-notice i {
    font-size: 1.25rem;
    color: var(--primary-color);
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.privacy-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.privacy-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* ==================== ACTION BUTTONS ==================== */

.action-buttons {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
    padding-top: 1.5rem;
    border-top: 2px solid var(--border-color);
    margin-top: 1.5rem;
    animation: fadeInUp 0.5s ease-out;
}

.action-buttons .btn-primary,
.action-buttons .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.action-buttons .btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
}

.action-buttons .btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 86, 179, 0.4);
}

.action-buttons .btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.action-buttons .btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.action-buttons .btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1.5px solid var(--border-color);
}

.action-buttons .btn-secondary:hover:not(:disabled) {
    background: var(--bg-tertiary);
    border-color: var(--text-secondary);
    transform: translateY(-1px);
}

.btn-link-modern {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
}

.btn-link-modern:hover {
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(0, 86, 179, 0.3);
}

.btn-link-modern i {
    transition: transform var(--transition-base);
}

.btn-link-modern:hover i {
    transform: translateX(4px);
}

/* Highlight Item - for special nested items */
.highlight-item {
    background: linear-gradient(90deg, rgba(0, 86, 179, 0.05) 0%, rgba(0, 86, 179, 0.02) 100%);
    border-left: 3px solid var(--primary-color);
    padding-left: 1rem;
}

.highlight-item:hover {
    background: linear-gradient(90deg, rgba(0, 86, 179, 0.08) 0%, rgba(0, 86, 179, 0.03) 100%);
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ==================== LOADING STATE ==================== */

.loading-state {
    padding: 1rem 0;
}

.skeleton-section {
    margin-bottom: 2rem;
    animation: fadeInUp 0.4s ease-out;
}

.skeleton {
    background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--bg-tertiary) 50%, var(--bg-secondary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-title {
    height: 24px;
    width: 150px;
    margin-bottom: 1.5rem;
}

.skeleton-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border-color);
}

.skeleton-text {
    height: 14px;
    width: 200px;
}

.skeleton-toggle {
    width: 52px;
    height: 28px;
    border-radius: 28px;
}

/* ==================== ERROR STATE ==================== */

.error-state {
    text-align: center;
    padding: 4rem 2rem;
    animation: fadeInUp 0.4s ease-out;
}

.error-state i {
    font-size: 4rem;
    color: var(--warning-color);
    margin-bottom: 1rem;
}

.error-state h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.error-state p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* ==================== RESPONSIVE DESIGN ==================== */

/* Tablet */
@media (max-width: 768px) {
    .header-content {
        padding: 1.5rem;
    }
    
    .icon-container {
        width: 56px;
        height: 56px;
    }
    
    .icon-container i {
        width: 56px;
        height: 56px;
        font-size: 1.75rem;
    }
    
    .header-text h1 {
        font-size: 1.5rem;
    }
    
    .settings-card {
        padding: 1.5rem;
    }
    
    .section-header {
        flex-direction: row;
    }
    
    .section-icon {
        width: 44px;
        height: 44px;
        font-size: 1.25rem;
    }
    
    .time-picker-group {
        grid-template-columns: 1fr;
    }
    
    .mode-options {
        grid-template-columns: 1fr;
    }
}

/* Mobile */
@media (max-width: 480px) {
    .header-content {
        flex-direction: column;
        text-align: center;
        padding: 1.25rem;
    }
    
    .quick-stats {
        justify-content: center;
        width: 100%;
    }
    
    .stat-badge {
        flex: 1;
        justify-content: center;
        min-width: 90px;
    }
    
    .settings-card {
        padding: 1.25rem;
        margin-bottom: 1rem;
    }
    
    .setting-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
    
    .setting-item.nested {
        padding-left: 2rem;
    }
    
    .setting-control {
        align-self: flex-end;
    }
    
    .action-buttons {
        flex-direction: column-reverse;
        gap: 0.625rem;
    }
    
    .action-buttons .btn-primary,
    .action-buttons .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .time-range-display {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
    
    .time-separator {
        transform: rotate(90deg);
    }
}

/* ==================== ACCESSIBILITY ==================== */

/* Scoped reduced-motion: only affects notification settings, not the whole app */
@media (prefers-reduced-motion: reduce) {
    .notification-settings-page *,
    .notification-settings-page *::before,
    .notification-settings-page *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible for keyboard navigation */
.toggle-switch:focus-visible,
.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.form-select-modern:focus-visible,
.time-input:focus-visible,
.number-input:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000;
        --shadow-sm: none;
        --shadow-md: none;
        --shadow-lg: none;
    }
    
    .settings-card {
        border: 2px solid currentColor;
    }
}