@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=JetBrains+Mono:wght@400;500;600&family=Inter:wght@400;500&display=swap');

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

:root {
    --bg:        #08090d;
    --bg2:       #0f1017;
    --bg3:       #16171f;
    --border:    #1e2030;
    --border2:   #2a2d3e;
    --text:      #e8eaf2;
    --text2:     #8890aa;
    --text3:     #50566e;
    --accent:    #5b6cff;
    --accent2:   #7b8aff;
    --green:     #2ddc8a;
    --green-dim: #1a4a35;
    --red:       #ff4f6a;
    --red-dim:   #4a1a22;
    --yellow:    #f5c842;
    --font-head: 'Syne', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --font-body: 'Inter', sans-serif;
    --radius:    10px;
    --radius-lg: 16px;
}

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 14px;
    line-height: 1.6;
    min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ── Scrollbar ──────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

/* ── Layout ─────────────────────────────────────────────────────────────── */
.app { display: flex; flex-direction: column; min-height: 100vh; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ── Header ─────────────────────────────────────────────────────────────── */
.header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(8, 9, 13, 0.88);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex; align-items: center; gap: 32px;
    height: 58px;
}

.logo {
    font-family: var(--font-head);
    font-weight: 800;
    font-size: 18px;
    letter-spacing: -0.5px;
    display: flex; align-items: center; gap: 8px;
    flex-shrink: 0;
}

.logo-dot {
    width: 8px; height: 8px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 12px var(--accent);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 12px var(--accent); }
    50% { opacity: 0.6; box-shadow: 0 0 4px var(--accent); }
}

.nav { display: flex; gap: 4px; flex: 1; }

.nav-link {
    padding: 6px 14px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text2);
    transition: all 0.15s;
}

.nav-link:hover { background: var(--bg3); color: var(--text); }
.nav-link.active { background: var(--bg3); color: var(--text); }

.search-box {
    position: relative; margin-left: auto;
}

.search-input {
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 7px 14px 7px 36px;
    color: var(--text);
    font: inherit;
    font-size: 13px;
    width: 220px;
    transition: all 0.2s;
    outline: none;
}

.search-input:focus {
    border-color: var(--accent);
    width: 280px;
}

.search-icon {
    position: absolute; left: 11px; top: 50%;
    transform: translateY(-50%);
    color: var(--text3);
    pointer-events: none;
}

/* ── Hero Stats Bar ─────────────────────────────────────────────────────── */
.stats-bar {
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
}

.stats-bar-inner {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
}

.stat-item {
    padding: 8px 24px;
    border-right: 1px solid var(--border);
}
.stat-item:last-child { border-right: none; }

.stat-label {
    font-size: 11px;
    font-weight: 500;
    color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 4px;
}

.stat-value {
    font-family: var(--font-mono);
    font-size: 22px;
    font-weight: 600;
    color: var(--text);
    line-height: 1;
}

.stat-value.green { color: var(--green); }

/* ── Main Layout ────────────────────────────────────────────────────────── */
.main-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 0;
    flex: 1;
}

/* ── Sidebar ────────────────────────────────────────────────────────────── */
.sidebar {
    border-right: 1px solid var(--border);
    padding: 24px 0;
    position: sticky;
    top: 58px;
    height: calc(100vh - 58px);
    overflow-y: auto;
}

.sidebar-section { margin-bottom: 28px; }

.sidebar-title {
    font-size: 10px;
    font-weight: 600;
    color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0 20px;
    margin-bottom: 8px;
}

.cat-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 7px 20px;
    font-size: 13px;
    color: var(--text2);
    cursor: pointer;
    transition: all 0.12s;
    border-left: 2px solid transparent;
}

.cat-item:hover { background: var(--bg3); color: var(--text); }
.cat-item.active {
    background: var(--bg3);
    color: var(--text);
    border-left-color: var(--accent);
}

.cat-count {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text3);
}

/* ── Content Area ───────────────────────────────────────────────────────── */
.content { padding: 24px; }

/* ── Sort Controls ──────────────────────────────────────────────────────── */
.controls {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.controls-label {
    font-size: 12px;
    color: var(--text3);
    margin-right: 4px;
}

.sort-btn {
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text2);
    background: var(--bg3);
    border: 1px solid var(--border);
    transition: all 0.15s;
}

.sort-btn:hover { color: var(--text); border-color: var(--border2); }
.sort-btn.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.period-select {
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--text2);
    border-radius: 6px;
    padding: 5px 10px;
    font: inherit;
    font-size: 12px;
    outline: none;
    margin-left: auto;
}

/* ── Channel Table ──────────────────────────────────────────────────────── */
.channel-table { width: 100%; border-collapse: collapse; }

.channel-table th {
    text-align: left;
    font-size: 10px;
    font-weight: 600;
    color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    padding: 0 12px 12px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.channel-row {
    border-bottom: 1px solid var(--border);
    transition: background 0.1s;
    cursor: pointer;
}
.channel-row:hover { background: var(--bg2); }

.channel-row td { padding: 12px; vertical-align: middle; }

.ch-rank {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text3);
    width: 32px;
}

.ch-info { display: flex; align-items: center; gap: 12px; }

.ch-avatar {
    width: 38px; height: 38px;
    border-radius: 10px;
    background: var(--bg3);
    border: 1px solid var(--border);
    overflow: hidden;
    flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    font-size: 16px;
}

.ch-avatar img { width: 100%; height: 100%; object-fit: cover; }

.ch-name {
    font-weight: 500;
    font-size: 13px;
    color: var(--text);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ch-username {
    font-size: 11px;
    color: var(--text3);
    font-family: var(--font-mono);
}

.ch-category {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    background: var(--bg3);
    color: var(--text2);
    border: 1px solid var(--border);
    white-space: nowrap;
}

.ch-num {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
    text-align: right;
}

.ch-growth {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    text-align: right;
    white-space: nowrap;
}

.ch-growth.pos { color: var(--green); }
.ch-growth.neg { color: var(--red); }
.ch-growth.neu { color: var(--text3); }

.er-badge {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 5px;
}
.er-high { background: var(--green-dim); color: var(--green); }
.er-mid  { background: rgba(245,200,66,0.12); color: var(--yellow); }
.er-low  { background: var(--bg3); color: var(--text3); }

/* ── Pagination ─────────────────────────────────────────────────────────── */
.pagination {
    display: flex; gap: 4px; justify-content: center;
    margin-top: 24px;
}

.page-btn {
    width: 34px; height: 34px;
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text2);
    background: var(--bg3);
    border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    transition: all 0.15s;
}
.page-btn:hover { color: var(--text); border-color: var(--border2); }
.page-btn.active {
    background: var(--accent); color: #fff; border-color: var(--accent);
}
.page-btn:disabled { opacity: 0.3; cursor: default; }

/* ── Channel Detail Page ─────────────────────────────────────────────────── */
.detail-header {
    display: flex; align-items: flex-start; gap: 20px;
    padding: 28px;
    border-bottom: 1px solid var(--border);
    background: var(--bg2);
}

.detail-avatar {
    width: 72px; height: 72px; border-radius: 16px;
    background: var(--bg3); border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    font-size: 28px; flex-shrink: 0; overflow: hidden;
}
.detail-avatar img { width: 100%; height: 100%; object-fit: cover; }

.detail-title {
    font-family: var(--font-head);
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
}

.detail-meta { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }

.detail-username {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text2);
}

.detail-desc {
    margin-top: 8px;
    font-size: 13px;
    color: var(--text2);
    max-width: 600px;
}

.open-btn {
    margin-left: auto;
    padding: 8px 20px;
    background: var(--accent);
    color: #fff;
    border-radius: 8px;
    font-weight: 600;
    font-size: 13px;
    transition: opacity 0.15s;
    flex-shrink: 0;
}
.open-btn:hover { opacity: 0.85; }

.detail-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 1px;
    background: var(--border);
    border-bottom: 1px solid var(--border);
}

.detail-stat {
    padding: 20px 24px;
    background: var(--bg);
}

.detail-stat-label {
    font-size: 11px;
    font-weight: 500;
    color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 0.7px;
    margin-bottom: 6px;
}

.detail-stat-value {
    font-family: var(--font-mono);
    font-size: 26px;
    font-weight: 600;
    color: var(--text);
    line-height: 1;
}

.detail-stat-value.accent { color: var(--accent2); }
.detail-stat-value.green  { color: var(--green); }

/* ── Chart ──────────────────────────────────────────────────────────────── */
.chart-section { padding: 24px; border-bottom: 1px solid var(--border); }

.section-title {
    font-family: var(--font-head);
    font-size: 14px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 16px;
    display: flex; align-items: center; gap: 8px;
}

.chart-wrap {
    height: 180px;
    background: var(--bg2);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
    position: relative;
}

canvas { display: block; }

/* ── Posts List ─────────────────────────────────────────────────────────── */
.posts-section { padding: 24px; }

.post-item {
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 8px;
    background: var(--bg2);
    transition: border-color 0.15s;
}
.post-item:hover { border-color: var(--border2); }

.post-text {
    font-size: 13px;
    color: var(--text);
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.5;
}

.post-meta {
    display: flex; gap: 16px; align-items: center;
    font-size: 11px; color: var(--text3);
    font-family: var(--font-mono);
}

.post-meta-item {
    display: flex; align-items: center; gap: 5px;
}

.post-date { margin-left: auto; }

/* ── Loading & Empty ────────────────────────────────────────────────────── */
.loading {
    display: flex; align-items: center; justify-content: center;
    height: 200px; color: var(--text3);
    font-family: var(--font-mono); font-size: 13px;
}

.spinner {
    width: 20px; height: 20px;
    border: 2px solid var(--border2);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    margin-right: 12px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.empty {
    padding: 48px 24px; text-align: center;
    color: var(--text3); font-size: 13px;
}

/* ── Back button ────────────────────────────────────────────────────────── */
.back-btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 7px 14px;
    border-radius: 8px;
    font-size: 13px; color: var(--text2);
    background: var(--bg3); border: 1px solid var(--border);
    margin: 16px 24px;
    transition: all 0.15s;
}
.back-btn:hover { color: var(--text); }

/* ── Toast ──────────────────────────────────────────────────────────────── */
.toast {
    position: fixed; bottom: 24px; right: 24px;
    background: var(--bg3); border: 1px solid var(--border2);
    padding: 12px 18px; border-radius: 10px;
    font-size: 13px; color: var(--text);
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
    transform: translateY(80px); opacity: 0;
    transition: all 0.3s cubic-bezier(0.34,1.56,0.64,1);
    z-index: 999;
}
.toast.show { transform: translateY(0); opacity: 1; }

/* ── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
    .main-layout { grid-template-columns: 1fr; }
    .sidebar { display: none; }
    .stats-bar-inner { grid-template-columns: repeat(2, 1fr); }
    .stat-item { border-right: none; border-bottom: 1px solid var(--border); }
    .detail-header { flex-wrap: wrap; }
    .open-btn { width: 100%; text-align: center; }
}

@media (max-width: 600px) {
    .container { padding: 0 16px; }
    .header-inner { gap: 16px; }
    .search-input { width: 140px; }
    .nav { gap: 2px; }
    .nav-link { padding: 6px 10px; font-size: 12px; }
    .stats-bar-inner { grid-template-columns: 1fr 1fr; }
    th.hide-mobile, td.hide-mobile { display: none; }
}