/* Reset & Base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #ff0000;
    --primary-dark: #cc0000;
    --bg: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-card: #212121;
    --bg-hover: #2a2a2a;
    --text: #f1f1f1;
    --text-secondary: #aaaaaa;
    --border: #333333;
    --radius: 12px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, #1f1f1f 100%);
    border-bottom: 1px solid var(--border);
    padding: 24px 0;
}

.header-content {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--primary);
    border-radius: 8px;
    font-size: 18px;
    color: white;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 14px;
    margin-left: auto;
}

/* Search */
.search-section {
    margin-top: 24px;
}

.search-bar {
    display: flex;
    gap: 8px;
    max-width: 700px;
    margin: 0 auto;
}

.search-input {
    flex: 1;
    padding: 14px 20px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-secondary);
    color: var(--text);
    font-size: 16px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s;
}

.search-input:focus {
    border-color: var(--primary);
}

.search-input::placeholder {
    color: var(--text-secondary);
}

.search-btn {
    padding: 14px 28px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.2s;
    white-space: nowrap;
}

.search-btn:hover {
    background: var(--primary-dark);
}

/* Filters */
.filter-section {
    margin-top: 20px;
}

.filters {
    display: flex;
    align-items: flex-end;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.filter-group label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.filter-select {
    padding: 10px 16px;
    border: 2px solid var(--border);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    cursor: pointer;
    min-width: 120px;
    transition: border-color 0.2s;
}

.filter-select:focus {
    border-color: var(--primary);
}

.filter-input {
    padding: 10px 16px;
    border: 2px solid var(--border);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    cursor: pointer;
    transition: border-color 0.2s;
}

.filter-input:focus {
    border-color: var(--primary);
}

.custom-date-range {
    display: flex;
    gap: 16px;
    justify-content: center;
    align-items: flex-end;
    margin-top: 12px;
    flex-wrap: wrap;
}

.filter-input {
    min-width: 150px;
    cursor: pointer;
}

.apply-date-btn {
    padding: 10px 24px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.2s;
    white-space: nowrap;
    height: fit-content;
}

.apply-date-btn:hover {
    background: var(--primary-dark);
}

/* Flatpickr dark theme overrides */
.flatpickr-calendar {
    background: var(--bg-card) !important;
    border: 1px solid var(--border) !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5) !important;
    border-radius: 12px !important;
    font-family: 'Noto Sans KR', sans-serif !important;
}

.flatpickr-months .flatpickr-month,
.flatpickr-current-month .flatpickr-monthDropdown-months {
    background: var(--bg-card) !important;
    color: var(--text) !important;
}

.flatpickr-current-month input.cur-year {
    color: var(--text) !important;
}

.flatpickr-weekdays {
    background: var(--bg-card) !important;
}

span.flatpickr-weekday {
    background: var(--bg-card) !important;
    color: var(--text-secondary) !important;
    font-weight: 500 !important;
}

.flatpickr-day {
    color: var(--text) !important;
    border-radius: 8px !important;
}

.flatpickr-day:hover {
    background: var(--bg-hover) !important;
    border-color: var(--border) !important;
}

.flatpickr-day.selected {
    background: var(--primary) !important;
    border-color: var(--primary) !important;
    color: white !important;
}

.flatpickr-day.today {
    border-color: var(--primary) !important;
}

.flatpickr-day.today:hover {
    background: var(--primary) !important;
    color: white !important;
}

.flatpickr-day.prevMonthDay,
.flatpickr-day.nextMonthDay {
    color: var(--text-secondary) !important;
    opacity: 0.4;
}

.flatpickr-months .flatpickr-prev-month,
.flatpickr-months .flatpickr-next-month {
    fill: var(--text) !important;
    color: var(--text) !important;
}

.flatpickr-months .flatpickr-prev-month:hover svg,
.flatpickr-months .flatpickr-next-month:hover svg {
    fill: var(--primary) !important;
}

.trending-btn {
    padding: 10px 24px;
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

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

/* Status Bar */
.status-bar {
    margin-top: 20px;
    padding: 12px 20px;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border);
    font-size: 14px;
    color: var(--text-secondary);
    text-align: center;
}

/* Error */
.error-msg {
    margin-top: 20px;
    padding: 16px 20px;
    background: rgba(255, 0, 0, 0.1);
    border: 1px solid rgba(255, 0, 0, 0.3);
    border-radius: 8px;
    color: #ff6b6b;
    text-align: center;
}

/* Loading */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-top: 60px;
    color: var(--text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Video Grid */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 24px;
    padding-bottom: 40px;
}

.video-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
    border: 1px solid transparent;
}

.video-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--border);
}

.thumbnail-wrapper {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    overflow: hidden;
}

.thumbnail-wrapper img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.duration-badge {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.85);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.video-info {
    padding: 14px;
}

.video-title {
    font-size: 15px;
    font-weight: 500;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 8px;
}

.video-channel {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.video-stats {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--text-secondary);
}

.video-stats span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.category-tag {
    display: inline-block;
    margin-top: 8px;
    padding: 2px 8px;
    background: rgba(255, 0, 0, 0.15);
    color: var(--primary);
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
}

.rank-badge {
    position: absolute;
    top: 8px;
    left: 8px;
    background: var(--primary);
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
}

/* Footer */
.footer {
    margin-top: 40px;
    padding: 20px 0;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-secondary);
    font-size: 13px;
}

/* Tab Navigation */
.tab-nav {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 0 20px;
}

.tab-nav .container {
    display: flex;
    gap: 0;
}

.tab-link {
    padding: 14px 24px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    border-bottom: 3px solid transparent;
    transition: all 0.2s;
}

.tab-link:hover {
    color: var(--text);
    background: var(--bg-hover);
}

.tab-link.active {
    color: var(--text);
    border-bottom-color: var(--primary);
}

/* Channel Grid */
.channel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.channel-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px;
    position: relative;
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.channel-rank {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--primary);
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
}

.channel-card-header {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    margin-bottom: 16px;
}

.channel-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.channel-info {
    min-width: 0;
}

.channel-name {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.channel-name a {
    color: var(--text);
    text-decoration: none;
}

.channel-name a:hover {
    color: var(--primary);
}

.channel-desc {
    font-size: 13px;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.channel-stats-row {
    display: flex;
    justify-content: space-around;
    padding: 12px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin-bottom: 14px;
}

.channel-stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
}

.stat-label {
    font-size: 12px;
    color: var(--text-secondary);
}

.growth-btn {
    width: 100%;
    padding: 10px;
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
}

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

/* Chart Modal */
.chart-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 20px;
}

.chart-modal-content {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 24px;
    width: 100%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
}

.chart-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.chart-channel-info {
    display: flex;
    gap: 14px;
    align-items: center;
}

.chart-channel-thumb {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}

.chart-channel-name {
    font-size: 18px;
    font-weight: 600;
}

.chart-channel-stats {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.close-chart-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 28px;
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
}

.close-chart-btn:hover {
    color: var(--text);
}

.chart-wrapper {
    height: 350px;
    margin-bottom: 16px;
}

.chart-toggle {
    display: flex;
    gap: 8px;
    justify-content: center;
}

.chart-toggle-btn {
    padding: 8px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    border-radius: 20px;
    font-size: 13px;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
}

.chart-toggle-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

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

/* Rising page */
.rising-desc {
    color: var(--text-secondary);
    font-size: 13px;
    margin-top: 8px;
}

.rising-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--primary);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

.load-more-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 30px;
    gap: 10px;
    color: var(--text-secondary);
}

/* Page Layout with Side Ads */
.page-layout {
    display: flex;
    justify-content: center;
    gap: 0;
    min-height: calc(100vh - 200px);
}

.main-content {
    flex: 1;
    max-width: 1280px;
    min-width: 0;
}

/* Side Ad Bars */
.ad-sidebar {
    width: 160px;
    min-width: 160px;
    position: sticky;
    top: 20px;
    height: fit-content;
    max-height: calc(100vh - 40px);
    padding: 20px 8px;
    overflow: hidden;
}

.ad-sidebar ins {
    background: transparent;
}

/* Bottom Fixed Ad */
.ad-bottom-fixed {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 4px 0;
    text-align: center;
    max-height: 100px;
    overflow: hidden;
}

.ad-bottom-fixed ins {
    background: transparent;
}

/* Bottom ad spacing */
body {
    padding-bottom: 100px;
}

/* Responsive - hide side ads on smaller screens */
@media (max-width: 1400px) {
    .ad-sidebar {
        width: 120px;
        min-width: 120px;
    }
}

@media (max-width: 1100px) {
    .ad-sidebar {
        display: none;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .subtitle {
        margin-left: 0;
    }

    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
        gap: 16px;
    }

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

    .filter-select {
        width: 100%;
    }

    .search-bar {
        flex-direction: column;
    }

    .channel-grid {
        grid-template-columns: 1fr;
    }

    .chart-modal-content {
        padding: 16px;
    }

    .chart-wrapper {
        height: 250px;
    }
}