/* style.css - Premium BL Novel & Manga Tracker */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Thai:wght@300;400;500;600;700&family=Outfit:wght@300;400;500;600;700&display=swap');

/* CSS Custom Properties for Themes */
:root[theme="dark"] {
    --bg-primary: #0b0f19;
    --bg-secondary: rgba(21, 29, 48, 0.7);
    --bg-card: rgba(30, 41, 59, 0.7);
    --bg-input: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --color-accent: #00d2ff;
    --color-accent-rgb: 0, 210, 255;
    --color-accent-secondary: #00f5d4;
    --color-gradient: linear-gradient(135deg, #00b4d8 0%, #00f5d4 100%);
    --border-color: rgba(255, 255, 255, 0.08);
    --shadow-color: rgba(0, 0, 0, 0.5);
    --glass-blur: 16px;
    --favorite-color: #ff2e93;
    --tag-bg: rgba(0, 210, 255, 0.15);
    --tag-text: #00e5ff;
}

:root[theme="light"] {
    --bg-primary: #f3f7fa;
    --bg-secondary: rgba(255, 255, 255, 0.8);
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-input: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --color-accent: #0077b6;
    --color-accent-rgb: 0, 119, 182;
    --color-accent-secondary: #00b4d8;
    --color-gradient: linear-gradient(135deg, #0077b6 0%, #00e5ff 100%);
    --border-color: rgba(0, 0, 0, 0.08);
    --shadow-color: rgba(148, 163, 184, 0.15);
    --glass-blur: 12px;
    --favorite-color: #ef4444;
    --tag-bg: rgba(0, 119, 182, 0.1);
    --tag-text: #0077b6;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', 'Noto Sans Thai', sans-serif;
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Layout Containers */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Header & Glassmorphism Navigation */
header {
    background: var(--bg-secondary);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 30px var(--shadow-color);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.brand-section {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-logo {
    width: 42px;
    height: 42px;
    background: var(--color-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    box-shadow: 0 0 15px rgba(var(--color-accent-rgb), 0.4);
    animation: pulse-glow 3s infinite alternate;
}

@keyframes pulse-glow {
    0% {
        box-shadow: 0 0 10px rgba(var(--color-accent-rgb), 0.4);
    }
    100% {
        box-shadow: 0 0 20px rgba(var(--color-accent-rgb), 0.8);
    }
}

.brand-title {
    font-size: 1.25rem;
    font-weight: 700;
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 0.5px;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Button & Link Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: 10px;
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary {
    background: var(--color-gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(var(--color-accent-rgb), 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--color-accent-rgb), 0.5);
}

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

.btn-secondary:hover {
    background: var(--bg-input);
    border-color: var(--color-accent);
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 10px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background: var(--bg-input);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* Tab Navigation */
.tab-navigation {
    display: flex;
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    width: fit-content;
}

.tab-btn {
    padding: 8px 18px;
    border-radius: 8px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab-btn.active {
    background: var(--color-gradient);
    color: white;
    box-shadow: 0 4px 10px rgba(var(--color-accent-rgb), 0.25);
}

/* Library Section Controls */
.controls-card {
    background: var(--bg-secondary);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 8px 32px var(--shadow-color);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.search-filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.search-wrapper {
    flex-grow: 1;
    position: relative;
    min-width: 250px;
}

.search-wrapper i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-input {
    width: 100%;
    padding: 12px 14px 12px 42px;
    border-radius: 10px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 0.95rem;
}

.search-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 10px rgba(var(--color-accent-rgb), 0.15);
}

/* Category Filter Tabs */
.category-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.filter-chip {
    padding: 10px 16px;
    border-radius: 30px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.filter-chip:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.filter-chip.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--bg-primary);
    font-weight: 600;
}

/* Favorite Toggle Switch button */
.fav-toggle-btn {
    padding: 10px 16px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    font-size: 0.9rem;
}

.fav-toggle-btn i {
    color: var(--text-muted);
}

.fav-toggle-btn.active {
    border-color: var(--favorite-color);
    background: rgba(255, 46, 147, 0.1);
    color: var(--favorite-color);
}

.fav-toggle-btn.active i {
    color: var(--favorite-color);
}

/* Sort and View Toggle row */
.sorting-view-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
}

.sort-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.sort-select {
    padding: 8px 12px;
    border-radius: 8px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-weight: 500;
    cursor: pointer;
}

.sort-select:focus {
    outline: none;
    border-color: var(--color-accent);
}

.view-modes {
    display: flex;
    background: var(--bg-input);
    padding: 4px;
    border-radius: 8px;
}

.view-btn {
    border: none;
    background: transparent;
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    color: var(--text-muted);
}

.view-btn.active {
    background: var(--bg-card);
    color: var(--color-accent);
    box-shadow: 0 2px 6px var(--shadow-color);
}

/* CARD VIEW LAYOUT */
.book-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.book-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 20px var(--shadow-color);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.3s ease;
    position: relative;
}

.book-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(var(--color-accent-rgb), 0.15), 0 5px 15px var(--shadow-color);
    border-color: rgba(var(--color-accent-rgb), 0.3);
}

.cover-wrapper {
    position: relative;
    height: 380px;
    width: 100%;
    background: #111;
    overflow: hidden;
}

.cover-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.book-card:hover .cover-image {
    transform: scale(1.05);
}

.card-category-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    color: white;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.fav-card-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: white;
    font-size: 16px;
    transition: all 0.2s ease;
}

.fav-card-btn:hover {
    transform: scale(1.1);
    background: rgba(255, 46, 147, 0.9);
}

.fav-card-btn.active {
    color: white;
    background: var(--favorite-color);
    border-color: var(--favorite-color);
}

.book-info {
    padding: 18px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    gap: 8px;
}

.book-title {
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1.4;
    word-break: break-word;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 48px;
}

.book-creators {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.lead-roles {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 4px;
    background: rgba(var(--color-accent-rgb), 0.05);
    border: 1px solid var(--border-color);
    padding: 6px 10px;
    border-radius: 8px;
    font-size: 0.8rem;
}

.lead-character {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.lead-character.male-lead {
    color: var(--color-accent);
    font-weight: 600;
}

.lead-character.sub-lead {
    color: var(--favorite-color);
    font-weight: 600;
}

.lead-divider {
    color: var(--text-muted);
}

.genre-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: auto;
    padding-top: 10px;
}

.genre-tag {
    background: var(--tag-bg);
    color: var(--tag-text);
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
}

.card-actions {
    display: flex;
    justify-content: flex-end;
    gap: 6px;
    border-top: 1px solid var(--border-color);
    padding-top: 12px;
    margin-top: 12px;
}

.card-action-btn {
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 0.85rem;
    padding: 6px;
    border-radius: 6px;
}

.card-action-btn.edit {
    color: var(--color-accent);
}

.card-action-btn.delete {
    color: var(--text-muted);
}

.card-action-btn.delete:hover {
    color: #ef4444;
}

/* TABLE VIEW LAYOUT */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow-color);
}

.book-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    min-width: 800px;
}

.book-table th, .book-table td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.book-table th {
    background: rgba(0, 0, 0, 0.1);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table-cover {
    width: 45px;
    height: 60px;
    object-fit: cover;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.table-title {
    font-weight: 700;
    font-size: 0.95rem;
}

.table-badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--bg-input);
    color: var(--text-secondary);
    display: inline-block;
}

.table-badge.novel { background: rgba(0, 180, 216, 0.15); color: #00b4d8; }
.table-badge.manga { background: rgba(144, 224, 239, 0.15); color: #0077b6; }
.table-badge.comic { background: rgba(0, 245, 212, 0.15); color: #00f5d4; }

.table-fav-btn {
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 16px;
    color: var(--text-muted);
}

.table-fav-btn.active {
    color: var(--favorite-color);
}

/* Modal Drawer Styling */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    display: flex;
    justify-content: flex-end;
}

.modal-overlay.open {
    opacity: 1;
    visibility: visible;
}

.drawer {
    width: 100%;
    max-width: 500px;
    height: 100%;
    background: var(--bg-primary);
    border-left: 1px solid var(--border-color);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.3);
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
}

.modal-overlay.open .drawer {
    transform: translateX(0);
}

.drawer-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.drawer-title {
    font-size: 1.2rem;
    font-weight: 700;
}

.drawer-close {
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 20px;
    color: var(--text-secondary);
}

.drawer-body {
    padding: 24px;
    overflow-y: auto;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.form-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-input, .form-select {
    padding: 10px 14px;
    border-radius: 8px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 0.9rem;
    width: 100%;
}

.form-input:focus, .form-select:focus {
    outline: none;
    border-color: var(--color-accent);
}

/* Custom Tag Dropdown Checklist styling */
.custom-multiselect {
    position: relative;
}

.select-box {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 0.9rem;
    user-select: none;
}

.overSelect {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
}

.checkboxes-dropdown {
    display: none;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-card);
    position: absolute;
    width: 100%;
    max-height: 200px;
    overflow-y: auto;
    z-index: 10;
    box-shadow: 0 10px 25px var(--shadow-color);
    padding: 8px;
    margin-top: 4px;
}

.checkboxes-dropdown.open {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
}

.checkbox-item:hover {
    background: rgba(var(--color-accent-rgb), 0.1);
}

.checkbox-item input {
    accent-color: var(--color-accent);
}

.selected-tags-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
}

/* Custom Tag Input Bar */
.custom-tag-adder {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

/* Form switch toggle style */
.switch-group {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-input);
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 24px;
}

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

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    transition: .4s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--color-accent);
}

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

input:checked + .slider.fav-slider {
    background-color: var(--favorite-color);
}

.drawer-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 12px;
}

.drawer-footer button {
    flex: 1;
}

/* STATISTICS DASHBOARD LAYOUT */
.stats-tab-content {
    display: none;
    flex-direction: column;
    gap: 24px;
}

.stats-tab-content.active {
    display: flex;
}

/* KPI Summary Cards Grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.kpi-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 4px 15px var(--shadow-color);
}

.kpi-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: white;
}

.kpi-icon.total { background: linear-gradient(135deg, #0077b6 0%, #00b4d8 100%); }
.kpi-icon.novel { background: linear-gradient(135deg, #00b4d8 0%, #00f5d4 100%); }
.kpi-icon.manga { background: linear-gradient(135deg, #7209b7 0%, #3f37c9 100%); }
.kpi-icon.comic { background: linear-gradient(135deg, #f72585 0%, #7209b7 100%); }
.kpi-icon.fav { background: linear-gradient(135deg, #ff2e93 0%, #ff85a1 100%); }

.kpi-details {
    display: flex;
    flex-direction: column;
}

.kpi-value {
    font-size: 1.8rem;
    font-weight: 700;
}

.kpi-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 600;
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.chart-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 4px 20px var(--shadow-color);
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: center;
}

.chart-title {
    font-size: 1.05rem;
    font-weight: 700;
    text-align: center;
    width: 100%;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.chart-container {
    position: relative;
    width: 100%;
    max-width: 250px;
    height: 250px;
}

/* Stats Summary Tables Grid */
.stats-tables-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.table-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 4px 20px var(--shadow-color);
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.table-card-title {
    font-size: 1.05rem;
    font-weight: 700;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.summary-data-table {
    width: 100%;
    border-collapse: collapse;
}

.summary-data-table th, .summary-data-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
}

.summary-data-table th {
    font-weight: 600;
    color: var(--text-secondary);
    text-align: left;
}

.summary-data-table tr:last-child td {
    border-bottom: none;
}

/* Empty State Styling */
.empty-state {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 60px 20px;
    text-align: center;
    background: var(--bg-secondary);
    border: 1px dashed var(--border-color);
    border-radius: 16px;
}

.empty-state i {
    font-size: 48px;
    color: var(--text-muted);
}

.empty-state h3 {
    font-size: 1.2rem;
    font-weight: 700;
}

.empty-state p {
    color: var(--text-secondary);
    max-width: 400px;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 2000;
}

.toast {
    background: var(--bg-card);
    border-left: 4px solid var(--color-accent);
    color: var(--text-primary);
    padding: 14px 20px;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
    font-size: 0.9rem;
    animation: slide-in-toast 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slide-in-toast {
    from {
        transform: translateY(100%) scale(0.9);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.toast.success {
    border-left-color: var(--color-accent-secondary);
}

.toast.error {
    border-left-color: #ef4444;
}

/* Theme switch custom styling in header */
.theme-switch-btn {
    font-size: 18px;
}

/* Utility classes */
.hidden {
    display: none !important;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .container {
        padding: 16px;
    }
    .header-container {
        flex-direction: column;
        align-items: stretch;
        padding: 16px;
    }
    .nav-actions {
        justify-content: space-between;
    }
    .sorting-view-row {
        flex-direction: column;
        align-items: stretch;
    }
    .sorting-view-row .view-modes {
        align-self: flex-end;
    }
    .kpi-grid {
        grid-template-columns: 1fr 1fr;
    }
    .charts-grid, .stats-tables-grid {
        grid-template-columns: 1fr;
    }
}