:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-hover: #f1f3f5;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #999999;
    --accent-color: #03c75a;
    /* Naver Green-ish */
    --accent-hover: #02b351;
    --border-color: #e0e0e0;
    --border-light: #f0f0f0;
    --font-heading: 'Noto Sans KR', sans-serif;
    --font-body: 'Noto Sans KR', sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    font-size: 14px;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.header {
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    margin-bottom: 2rem;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-color);
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.brand-icon {
    width: 24px;
    height: 24px;
}

.social-links {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-left: 1rem;
    padding-left: 1rem;
    border-left: 1px solid var(--border-color);
}

.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    transition: all 0.2s;
}

.social-btn:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}

.social-btn i,
.social-btn svg {
    width: 20px;
    height: 20px;
}

/* Inputs & Buttons */
input {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
}

input:focus {
    border-color: var(--accent-color);
}

.btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.2s;
}

.btn-primary {
    background-color: var(--accent-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
}

.btn-secondary {
    background-color: white;
    border-color: var(--border-color);
    color: var(--text-secondary);
}

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

/* Search Section */
.search-section {
    max-width: 700px;
    margin: 0 auto 3rem;
    text-align: center;
}

.search-bar-wrapper {
    display: flex;
    gap: 0px;
}

.search-bar-wrapper input {
    flex: 1;
    border-right: none;
    height: 48px;
    font-size: 1rem;
}

.search-bar-wrapper .btn {
    height: 48px;
    padding: 0 2rem;
    font-size: 1rem;
    border-radius: 0;
}

/* Results Content */
.channel-context {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.channel-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.channel-profile img {
    width: 64px;
    height: 64px;
    border: 1px solid var(--border-color);
    background-color: white;
}

.channel-profile h2 {
    font-size: 1.2rem;
    font-weight: 700;
}

.channel-profile p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    max-width: 400px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.channel-summary-pill {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.stat-pill {
    text-align: right;
}

.stat-pill .label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-light);
}

.stat-pill .value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.divider {
    width: 1px;
    height: 30px;
    background-color: var(--border-color);
}

/* Chart Canvas */
.chart-container {
    width: 100%;
    height: 300px;
    margin-bottom: 3rem;
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    background: white;
}

.chart-container h3 {
    margin-bottom: 1rem;
    font-size: 1rem;
    color: var(--text-secondary);
    border-left: 3px solid var(--accent-color);
    padding-left: 0.5rem;
}

/* Video Table */
.video-list-container {
    border-top: 2px solid var(--text-primary);
}

.video-table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}

.video-table th {
    background-color: var(--bg-hover);
    padding: 1rem 0.5rem;
    font-weight: 700;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.video-table th.sortable {
    cursor: pointer;
    transition: background-color 0.2s;
}

.video-table th.sortable:hover {
    background-color: var(--border-color);
}

.video-table th.sortable .sort-icon {
    width: 14px;
    height: 14px;
    vertical-align: middle;
    margin-left: 4px;
    stroke-width: 2.5px;
    color: var(--text-light);
}

.video-table th.sortable.active .sort-icon {
    color: var(--accent-color);
}

/* Chart Header & Nav */
.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

/* ... existing h3 ... */

.chart-options-group {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.toggle-group {
    display: flex;
    background-color: var(--bg-hover);
    padding: 0.25rem;
    border-radius: 6px;
    gap: 0.25rem;
}

.toggle-btn {
    border: none;
    background: none;
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
    cursor: pointer;
    border-radius: 4px;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all 0.2s;
}

.toggle-btn:hover {
    color: var(--text-primary);
}

.toggle-btn.active {
    background-color: white;
    color: var(--accent-color);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.chart-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.btn-icon {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

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

.btn-icon i {
    width: 16px;
    height: 16px;
}

.video-table td {
    padding: 0.5rem;
    border-bottom: 1px solid var(--border-light);
    vertical-align: middle;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.video-table td.title-cell {
    text-align: left;
    padding-left: 1rem;
}

.video-title-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.video-title-link:hover {
    text-decoration: underline;
    color: var(--accent-color);
}

.video-thumbnail-small {
    width: 60px;
    height: auto;
    display: block;
    cursor: pointer;
    border: 1px solid var(--border-light);
    border-radius: 4px;
}

/* Modal */
.modal {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background-color: white;
    padding: 0;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    border-radius: var(--radius-lg);
}

.close-modal {
    position: absolute;
    top: 10px;
    right: 15px;
    color: #333;
    font-size: 2rem;
    cursor: pointer;
    z-index: 10;
}

.modal-body {
    padding: 20px;
}

.video-frame-container {
    width: 100%;
    aspect-ratio: 16/9;
    background-color: black;
}

.modal-footer {
    padding: 1rem;
    background-color: var(--bg-hover);
    text-align: right;
    border-top: 1px solid var(--border-light);
}

/* Comments Syles */
.comments-list {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.comment-item {
    padding: 1rem;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    gap: 1rem;
}

.comment-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.comment-content h4 {
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.comment-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    white-space: pre-wrap;
    line-height: 1.4;
}

.comment-meta {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 0.5rem;
}

.clickable-stat {
    cursor: pointer;
    text-decoration: underline;
    color: var(--text-secondary);
}

.clickable-stat:hover {
    color: var(--accent-color);
}

/* Loading & utils */
.hidden {
    display: none !important;
}

.loading-indicator {
    text-align: center;
    padding: 4rem;
}



/* Favorites */
.btn-icon-subtle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-light);
    transition: color 0.2s;
    display: flex;
    align-items: center;
}

.btn-icon-subtle:hover {
    color: #f1c40f;
    /* Yellow for star */
}

.btn-icon-subtle.active {
    color: #f1c40f;
    fill: #f1c40f;
}

.btn-icon-subtle.active svg {
    fill: #f1c40f;
}

.favorites-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.favorite-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem;
    background-color: var(--bg-hover);
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.favorite-item:hover {
    background-color: var(--border-color);
}

.favorite-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.favorite-info img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: white;
}

.favorite-info span {
    font-weight: 500;
    color: var(--text-primary);
}

.delete-fav-btn {
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 0.5rem;
}

.delete-fav-btn:hover {
    color: #e53e3e;
}