.characters-section {
    padding: 0.5rem 0 4rem;
    min-height: 80vh;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-top: 0;
    margin-bottom: 0.5rem;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-top: 0;
    margin-bottom: 2rem;
}

/* Modern Filter Control Bar */
.controls-row {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;

    /* Container styling */
    background: var(--bg-secondary);
    padding: 0.5rem;
    border-radius: 1rem;
    width: fit-content;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--card-border);
}

.collection-tabs, .filter-tabs, .font-style-tabs, .category-filter-wrapper {
    display: flex;
    gap: 0.25rem;
    align-items: center;
}

.sort-control {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

/* Add separators between groups on desktop */
.collection-tabs::after,
.category-filter-wrapper::after,
.font-style-tabs::after {
    content: '';
    display: block;
    width: 1px;
    height: 24px;
    background-color: rgba(0, 0, 0, 0.15);
    margin: 0 0.5rem;
}

[data-theme="dark"] .collection-tabs::after,
[data-theme="dark"] .category-filter-wrapper::after,
[data-theme="dark"] .font-style-tabs::after {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Category Dropdown Styling */
.category-dropdown {
    position: relative;
}

.category-dropdown-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border: none;
    background: var(--bg-primary);
    color: var(--primary-color);
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
    white-space: nowrap;
}

.category-dropdown-btn:hover {
    background-color: var(--bg-secondary);
    box-shadow: var(--shadow-md);
}

[data-theme="dark"] .category-dropdown-btn {
    background-color: var(--bg-tertiary);
    color: white;
}

[data-theme="dark"] .category-dropdown-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.dropdown-arrow {
    transition: transform 0.2s ease;
}

.category-dropdown.open .dropdown-arrow {
    transform: rotate(180deg);
}

.category-dropdown-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    min-width: 180px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-lg);
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    z-index: 1000;
    max-height: 400px;
    overflow-y: auto;
}

.category-dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    padding: 0.625rem 1rem;
    cursor: pointer;
    transition: background-color 0.15s ease;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.dropdown-item:hover {
    background-color: var(--bg-secondary);
}

.dropdown-item.active {
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    font-weight: 600;
}

[data-theme="dark"] .dropdown-item.active {
    background-color: rgba(99, 102, 241, 0.2);
}

.dropdown-item.category-header {
    font-weight: 600;
    color: var(--text-primary);
}

.dropdown-item.subcategory {
    padding-left: 2rem;
    color: var(--text-secondary);
}

.dropdown-item.subcategory:hover {
    color: var(--text-primary);
}

.dropdown-divider {
    height: 1px;
    background-color: var(--card-border);
    margin: 0.5rem 0;
}

.sort-label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.875rem;
    white-space: nowrap;
}

.sort-select {
    padding: 0.5rem 1rem;
    border: none;
    background: var(--bg-primary);
    color: var(--primary-color);
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2363636f' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
    min-width: 140px;
}

.sort-select:hover {
    background-color: var(--bg-secondary);
    box-shadow: var(--shadow-md);
}

.sort-select:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

[data-theme="dark"] .sort-select {
    background-color: var(--bg-tertiary);
    color: white;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%9ca3af' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
}

[data-theme="dark"] .sort-select:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Unified Button Styling */
.collection-btn,
.filter-btn,
.font-style-btn {
    padding: 0.5rem 1rem;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    border-radius: 0.5rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.875rem;
    white-space: nowrap;
    line-height: 1.4;
}

.collection-btn:hover,
.filter-btn:hover,
.font-style-btn:hover {
    background: rgba(0,0,0,0.05);
    color: var(--text-primary);
    transform: none;
}

[data-theme="dark"] .collection-btn:hover,
[data-theme="dark"] .filter-btn:hover,
[data-theme="dark"] .font-style-btn:hover {
    background: rgba(255,255,255,0.05);
}

/* Active State - "Pill" style */
.collection-btn.active,
.filter-btn.active,
.font-style-btn.active {
    background: var(--bg-primary);
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
    font-weight: 600;
}

[data-theme="dark"] .collection-btn.active,
[data-theme="dark"] .filter-btn.active,
[data-theme="dark"] .font-style-btn.active {
    background: var(--bg-tertiary);
    color: white;
}

.characters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

/* Category section headers */
.category-section-header {
    grid-column: 1 / -1;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--primary-color);
}

.category-section-header:first-child {
    margin-top: 0;
}

.category-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.02em;
}

/* Subcategory section headers */
.subcategory-section-header {
    grid-column: 1 / -1;
    margin-top: 1rem;
    margin-bottom: 0.25rem;
    padding-left: 0.5rem;
    border-left: 3px solid var(--secondary-color);
}

.subcategory-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.character-card {
    background: var(--card-bg);
    border: 1px solid rgba(0,0,0,0.12);
    border-radius: 1rem;
    padding: 1rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .character-card {
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(255,255,255,0.03);
}

.character-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--bg-gradient);
    transform: scaleX(0);
    transition: transform 0.3s;
}

.character-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.character-card:hover::before {
    transform: scaleX(1);
}

.character-card.in-collection {
    background: linear-gradient(135deg, #fff5e6 0%, #ffe8cc 100%);
    border-color: var(--accent-color);
}

.character-card.in-collection::before {
    background: var(--accent-color);
    transform: scaleX(1);
}

.collection-badge {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    font-size: 1.5rem;
    color: var(--accent-color);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.character-symbol {
    font-size: 3rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    line-height: 1;
    transition: font-family 0.3s;
}

/* Vowel placeholder styling */
.vowel-placeholder {
    color: #9ca3af; /* Distinct grey color (text-light equivalent) */
    font-family: 'Noto Sans Thai Looped', sans-serif !important; /* Always use Looped font for placeholder circle */
    font-size: 0.7em; /* Smaller size relative to parent */
    vertical-align: middle;
    font-weight: normal;
}

@media (prefers-color-scheme: dark) {
    .vowel-placeholder {
        color: #6b7280; /* Darker grey for dark mode */
    }
}

/* Looped (Traditional) font style - with decorative loops */
.font-style-looped .character-symbol {
    font-family: 'Noto Sans Thai Looped', 'Cordia', 'Angsana', 'Eucrosia', serif;
}

/* Loopless (Simplified) font style */
.font-style-loopless .character-symbol {
    font-family: 'Prompt', sans-serif;
}

.character-name {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
    font-weight: 500;
}

.character-transcription {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.character-transcription-ru {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.character-type-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: 0.5rem;
}

.character-type-badge.consonant {
    background: rgba(99, 102, 241, 0.15);
    color: rgba(99, 102, 241, 0.8);
}

.character-type-badge.vowel {
    background: rgba(139, 92, 246, 0.15);
    color: rgba(139, 92, 246, 0.8);
}

.character-type-badge.quasi {
    background: rgba(16, 185, 129, 0.15);
    color: rgba(16, 185, 129, 0.8);
}

.character-type-badge.tone {
    background: rgba(245, 158, 11, 0.15);
    color: rgba(245, 158, 11, 0.8);
}

.character-type-badge.digit {
    background: rgba(239, 68, 68, 0.15);
    color: rgba(239, 68, 68, 0.8);
}

.character-type-badge.other {
    background: rgba(107, 114, 128, 0.15);
    color: rgba(107, 114, 128, 0.8);
}

.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    font-size: 1.125rem;
}

.hidden {
    display: none !important;
}

/* Modal Styles - Modern Character Card */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.8) 0%, rgba(30, 41, 59, 0.9) 100%);
    backdrop-filter: blur(12px);
    animation: modalFadeIn 0.25s ease-out;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

@keyframes modalFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 250, 252, 0.98) 100%);
    padding: 0;
    border-radius: 1.5rem;
    max-width: 720px;
    width: 100%;
    position: relative;
    box-shadow:
        0 25px 50px -12px rgba(0, 0, 0, 0.25),
        0 0 0 1px rgba(255, 255, 255, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.5);
    animation: modalSlideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
}

[data-theme="dark"] .modal-content {
    background: linear-gradient(145deg, rgba(30, 41, 59, 0.98) 0%, rgba(15, 23, 42, 0.95) 100%);
    box-shadow:
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

@keyframes modalSlideUp {
    from {
        transform: translateY(30px) scale(0.97);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.7);
    cursor: pointer;
    line-height: 1;
    transition: all 0.2s;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 50%;
    z-index: 10;
}

.close:hover {
    color: white;
    background: rgba(0, 0, 0, 0.4);
    transform: rotate(90deg);
}

/* Header with gradient background */
.modal-header {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    padding: 1.25rem 1.5rem;
    position: relative;
    overflow: hidden;
}

.modal-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(255,255,255,0.15) 0%, transparent 70%);
    pointer-events: none;
}

/* Horizontal symbols layout */
.modal-symbols-container {
    display: flex;
    gap: 1rem;
    margin-bottom: 0;
}

.modal-symbol-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 0.75rem;
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.modal-symbol-label {
    font-size: 0.65rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.modal-symbol-looped,
.modal-symbol-loopless {
    font-size: 3.5rem;
    font-weight: 700;
    color: white;
    line-height: 1.1;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.modal-symbol-looped {
    font-family: 'Noto Sans Thai Looped', 'Cordia', 'Angsana', 'Eucrosia', serif;
}

.modal-symbol-loopless {
    font-family: 'Prompt', sans-serif;
}

/* Title section */
.modal-title-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 1rem;
    gap: 1rem;
}

.modal-title-info {
    flex: 1;
    min-width: 0;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    margin: 0;
    line-height: 1.2;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.modal-name-en {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.75);
    margin-top: 0.15rem;
    font-weight: 500;
}

.modal-category-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2rem;
    font-size: 0.7rem;
    font-weight: 600;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
    backdrop-filter: blur(4px);
}

/* Info section - compact grid */
.modal-info {
    padding: 1rem 1.5rem 1.25rem;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}

.info-card {
    background: var(--bg-secondary);
    border-radius: 0.6rem;
    padding: 0.6rem 0.8rem;
    border: 1px solid var(--card-border);
    transition: all 0.2s;
}

.info-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.info-card.full-width {
    grid-column: 1 / -1;
}

.info-card-label {
    font-size: 0.6rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 0.15rem;
}

.info-card-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
}

.info-card-value.large {
    font-size: 1.1rem;
}

.info-card-value.ipa {
    font-family: 'Noto Sans', sans-serif;
    color: var(--secondary-color);
}

/* Collection toggle button - inline style */
.collection-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.7rem 1rem;
    margin-top: 0.5rem;
    border: none;
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    color: white;
    border-radius: 0.6rem;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(249, 115, 22, 0.25);
}

.collection-toggle-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(249, 115, 22, 0.35);
}

.collection-toggle-btn.in-collection {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.25);
}

.collection-toggle-btn.in-collection:hover {
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.35);
}

/* Pair link button */
.pair-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: var(--primary-color);
    padding: 0.4rem 0.75rem;
    border-radius: 0.4rem;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 600;
    transition: all 0.2s;
}

.pair-link-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

/* Legacy info-row support (deprecated but kept for compatibility) */
.info-row {
    display: none;
}

.info-label, .info-value {
    display: none;
}

@media (max-width: 768px) {
    .characters-section {
        padding-top: 0.5rem;
    }

    .controls-row {
        width: 100%;
        background: transparent;
        border: none;
        box-shadow: none;
        padding: 0;
        gap: 1rem;
        flex-direction: row;
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 0.5rem;
        -ms-overflow-style: none;
        scrollbar-width: none;
    }

    .controls-row::-webkit-scrollbar {
        display: none;
    }

    .controls-row {
        flex-direction: column;
        align-items: stretch;
    }

    .collection-tabs, .filter-tabs, .font-style-tabs {
        background: var(--bg-secondary);
        padding: 0.25rem;
        border-radius: 0.75rem;
        width: 100%;
        justify-content: space-between;
        gap: 0.25rem;
    }

    .sort-control {
        background: var(--bg-secondary);
        padding: 0.5rem;
        border-radius: 0.75rem;
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .sort-label {
        font-size: 0.8rem;
    }

    .sort-select {
        flex: 1;
        min-width: 0;
    }

    .collection-tabs::after,
    .category-filter-wrapper::after {
        display: none;
    }

    .category-filter-wrapper {
        width: 100%;
    }

    .category-dropdown {
        width: 100%;
    }

    .category-dropdown-btn {
        width: 100%;
        justify-content: space-between;
    }

    .category-dropdown-menu {
        width: 100%;
    }

    .collection-btn, .font-style-btn {
        flex: 1;
        text-align: center;
        padding: 0.6rem 0.25rem;
        font-size: 0.8rem;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .characters-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 1rem;
    }

    .category-section-header {
        margin-top: 1rem;
    }

    .category-title {
        font-size: 1.25rem;
    }

    .subcategory-title {
        font-size: 0.875rem;
    }

    .character-symbol {
        font-size: 3rem;
    }

    /* Modal mobile styles */
    .modal.show {
        padding: 0.75rem;
    }

    .modal-content {
        border-radius: 1.25rem;
    }

    .modal-header {
        padding: 1rem 1.25rem;
    }

    .modal-symbols-container {
        gap: 0.75rem;
    }

    .modal-symbol-wrapper {
        padding: 0.5rem;
    }

    .modal-symbol-looped,
    .modal-symbol-loopless {
        font-size: 2.75rem;
    }

    .modal-symbol-label {
        font-size: 0.55rem;
    }

    .modal-title-section {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .modal-title {
        font-size: 1.1rem;
    }

    .modal-info {
        padding: 0.75rem 1rem 1rem;
        gap: 0.4rem;
    }

    .info-card {
        padding: 0.5rem 0.65rem;
    }

    .info-card-label {
        font-size: 0.55rem;
    }

    .info-card-value {
        font-size: 0.85rem;
    }

    .info-card-value.large {
        font-size: 1rem;
    }

    .collection-toggle-btn {
        padding: 0.6rem 0.75rem;
        font-size: 0.8rem;
    }

    .close {
        width: 2rem;
        height: 2rem;
        font-size: 1.25rem;
    }
}

@media (prefers-color-scheme: dark) {
    .character-card.in-collection {
        background: linear-gradient(135deg, rgba(236, 72, 153, 0.2) 0%, rgba(236, 72, 153, 0.1) 100%);
        border-color: var(--accent-color);
    }

    .character-type-badge.consonant {
        background: rgba(99, 102, 241, 0.25);
        color: #818cf8;
    }

    .character-type-badge.vowel {
        background: rgba(139, 92, 246, 0.25);
        color: #a78bfa;
    }

    .character-type-badge.quasi {
        background: rgba(16, 185, 129, 0.25);
        color: #34d399;
    }

    .character-type-badge.tone {
        background: rgba(245, 158, 11, 0.25);
        color: #fbbf24;
    }

    .character-type-badge.digit {
        background: rgba(239, 68, 68, 0.25);
        color: #f87171;
    }

    .character-type-badge.other {
        background: rgba(107, 114, 128, 0.25);
        color: #9ca3af;
    }
}