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

  :root {
    --bg: #0B0D14;
    --bg2: #111320;
    --card: #151823;
    --card-hover: #1A1E2E;
    --text: #E4E8F1;
    --muted: #6B7280;
    --border: rgba(255,255,255,.07);
    --paid: #F59E0B;
    --organic: #10B981;
    --accent: #6366F1;
    --accent-light: #818CF8;
    --meta: #3B82F6;
    --fb: #3B82F6;
    --ig: #E1306C;
    --yt: #FF0000;
    --tt: #00F2EA;
    --danger: #EF4444;
    --radius: 14px;
    --shadow: 0 2px 8px rgba(0,0,0,.35);
    --shadow-lg: 0 8px 32px rgba(0,0,0,.5);
    --glow: 0 0 20px rgba(99,102,241,.12);
  }

  @keyframes fadeInUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
  }
  @keyframes pulseGlow {
    0%,100% { box-shadow: 0 0 0 rgba(99,102,241,0); }
    50% { box-shadow: 0 0 18px rgba(99,102,241,.2); }
  }

  body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; }
  ::-webkit-scrollbar { width: 6px; height: 6px; }
  ::-webkit-scrollbar-track { background: var(--bg); }
  ::-webkit-scrollbar-thumb { background: rgba(255,255,255,.12); border-radius: 3px; }
  ::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,.2); }

  /* HEADER */
  .header {
    background: rgba(21,24,35,.85);
    backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 0 28px;
    position: sticky; top: 0; z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    height: 60px;
  }
  .header-left { display: flex; align-items: center; gap: 16px; }
  .logo { font-size: 18px; font-weight: 700; color: var(--text); letter-spacing: -0.3px; display: flex; align-items: center; gap: 6px; }
  .logo span { color: var(--accent-light); }
  .date-badge {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 5px 12px;
    font-size: 13px;
    color: var(--muted);
    cursor: pointer;
    display: flex; align-items: center; gap: 6px;
    user-select: none;
  }
  .date-badge:hover { border-color: var(--accent); color: var(--accent-light); }
  .date-badge.open { border-color: var(--accent); color: var(--accent-light); background: rgba(99,102,241,.1); }

  /* ===== CALENDAR PICKER ===== */
  .cal-wrap {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    z-index: 300;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: var(--shadow-lg);
    display: none;
    flex-direction: column;
    min-width: 740px;
  }
  .cal-wrap.open { display: flex; }
  /* clip presets sidebar corners without collapsing height */
  .cal-presets { border-radius: 14px 0 0 14px; }
  /* body = presets sidebar + calendar columns */
  .cal-body { display: flex; align-items: stretch; }
  .cal-presets {
    width: 155px; flex-shrink: 0;
    padding: 14px 8px;
    border-right: 1px solid var(--border);
    background: var(--bg2);
    display: flex; flex-direction: column; gap: 1px;
  }
  .cal-preset-btn {
    text-align: left; padding: 7px 12px;
    border-radius: 8px; border: none; background: none;
    font-size: 13px; color: var(--text); cursor: pointer;
    transition: all .12s; white-space: nowrap;
  }
  .cal-preset-btn:hover { background: rgba(99,102,241,.12); color: var(--accent-light); }
  .cal-preset-btn.active { background: var(--accent); color: #fff; font-weight: 600; }
  .cal-preset-divider { height: 1px; background: var(--border); margin: 6px 4px; }
  .cal-months-col {
    flex: 1; display: flex; flex-direction: column;
    padding: 20px 20px 0 20px;
  }
  .cal-months { display: flex; gap: 28px; }
  .cal-month { flex: 1; min-width: 210px; }
  .cal-nav {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 12px;
  }
  .cal-nav-btn {
    width: 28px; height: 28px; border-radius: 7px;
    border: 1px solid var(--border); background: none; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 16px; color: var(--muted); transition: all .15s;
  }
  .cal-nav-btn:hover { background: var(--bg2); color: var(--text); border-color: var(--accent); }
  .cal-month-title { font-size: 13.5px; font-weight: 700; color: var(--text); }
  .cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 2px; }
  .cal-dow {
    text-align: center; font-size: 11px; font-weight: 700;
    color: var(--muted); padding: 4px 0; letter-spacing: .3px;
  }
  .cal-day {
    text-align: center; font-size: 13px; padding: 7px 0;
    cursor: pointer; border-radius: 6px; transition: background .08s, color .08s;
    position: relative; user-select: none;
  }
  .cal-day:hover:not(.empty):not(.disabled) { background: rgba(99,102,241,.15); color: var(--accent-light); }
  .cal-day.empty  { cursor: default; }
  .cal-day.disabled { color: #3A3F50; cursor: not-allowed; }
  .cal-day.today::after {
    content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
    width: 4px; height: 4px; background: var(--accent); border-radius: 50%;
  }
  .cal-day.in-range { background: rgba(99,102,241,.1); border-radius: 0; color: var(--accent-light); }
  .cal-day.range-start, .cal-day.range-end {
    background: var(--accent) !important; color: #fff !important;
  }
  .cal-day.range-start { border-radius: 6px 0 0 6px; }
  .cal-day.range-end   { border-radius: 0 6px 6px 0; }
  .cal-day.range-start.range-end { border-radius: 6px; }
  /* footer: date display + buttons */
  .cal-footer {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 0 16px; margin-top: 14px;
    border-top: 1px solid var(--border);
  }
  .cal-footer-left { display: flex; flex-direction: column; gap: 2px; }
  .cal-range-display { font-size: 13px; font-weight: 600; color: var(--text); }
  .cal-range-hint { font-size: 11.5px; color: var(--muted); }
  .cal-actions { display: flex; gap: 8px; }
  .cal-cancel {
    background: none; border: 1px solid var(--border); border-radius: 8px;
    padding: 7px 16px; font-size: 13px; cursor: pointer; color: var(--muted);
    transition: all .12s;
  }
  .cal-cancel:hover { border-color: var(--text); color: var(--text); }
  .cal-apply {
    background: var(--accent); color: #fff; border: none; border-radius: 8px;
    padding: 7px 18px; font-size: 13px; font-weight: 600; cursor: pointer;
    transition: background .12s;
  }
  .cal-apply:hover { background: #4F46E5; }
  .cal-apply:disabled { background: rgba(99,102,241,.3); cursor: default; color: rgba(255,255,255,.5); }

  .header-right { display: flex; align-items: center; gap: 10px; }
  .btn {
    padding: 7px 16px; border-radius: 8px; font-size: 13px; font-weight: 600;
    border: none; cursor: pointer; transition: all .15s;
  }
  .btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
  .btn-outline:hover { border-color: var(--accent); color: var(--accent-light); }
  .btn-primary { background: var(--accent); color: #fff; }
  .btn-primary:hover { background: #4F46E5; }

  /* TABS */
  .tabs-bar {
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    padding: 0 28px;
    display: flex; gap: 2px;
    overflow-x: auto;
  }
  .tabs-bar::-webkit-scrollbar { display: none; }
  .tab-btn {
    padding: 14px 18px;
    font-size: 13.5px; font-weight: 500;
    color: var(--muted);
    background: none; border: none; cursor: pointer;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
    display: flex; align-items: center; gap: 7px;
    transition: color .15s, border-color .15s;
  }
  .tab-btn:hover { color: var(--text); }
  .tab-btn.active { color: var(--accent-light); border-bottom-color: var(--accent); font-weight: 600; }
  .tab-dot { width: 8px; height: 8px; border-radius: 50%; }

  /* MAIN */
  .main { padding: 24px 28px; max-width: 1400px; margin: 0 auto; }

  /* SECTION */
  .section-title {
    font-size: 19px; font-weight: 700; margin-bottom: 18px;
    display: flex; align-items: center; gap: 10px;
  }
  .section-title .badge {
    font-size: 11px; font-weight: 600; padding: 2px 8px;
    border-radius: 20px; letter-spacing: .4px;
  }
  .badge-paid { background: rgba(245,158,11,.15); color: #FBBF24; }
  .badge-organic { background: rgba(16,185,129,.15); color: #34D399; }

  /* KPI GRID */
  .kpi-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(175px, 1fr)); gap: 14px; margin-bottom: 24px; }
  .kpi-grid-6 { grid-template-columns: repeat(6, 1fr); }
  .kpi-card {
    background: var(--card); border-radius: var(--radius);
    padding: 18px; box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all .25s ease;
    position: relative; overflow: hidden;
    animation: fadeInUp .4s ease both;
  }
  .kpi-card:hover { box-shadow: var(--glow); border-color: rgba(99,102,241,.2); transform: translateY(-2px); background: var(--card-hover); }
  .kpi-label { font-size: 11.5px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; margin-bottom: 8px; }
  .kpi-value {
    font-size: 24px; font-weight: 700; color: var(--text);
    cursor: text;
    outline: none;
    border: none;
    background: transparent;
    width: 100%;
    padding: 0;
    font-family: inherit;
    caret-color: var(--accent);
  }
  .kpi-value:focus { color: var(--accent-light); }
  .kpi-sub { font-size: 12px; color: var(--muted); margin-top: 4px; display: flex; align-items: center; gap: 4px; }
  .kpi-change { font-size: 12px; font-weight: 600; }
  .kpi-change.up { color: #34D399; }
  .kpi-change.down { color: #F87171; }
  .kpi-accent { height: 3px; border-radius: 2px; margin-bottom: 14px; }

  /* CHART GRID */
  .chart-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 24px; }
  .chart-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 18px; margin-bottom: 24px; }
  .chart-card {
    background: var(--card); border-radius: var(--radius);
    padding: 20px; box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all .25s ease;
    animation: fadeInUp .5s ease both;
  }
  .chart-card:hover { border-color: rgba(99,102,241,.15); }
  .chart-title { font-size: 13.5px; font-weight: 700; color: var(--text); margin-bottom: 16px; display: flex; justify-content: space-between; align-items: center; }
  .chart-subtitle { font-size: 12px; color: var(--muted); font-weight: 400; }
  .chart-wrap { position: relative; height: 240px; }
  .chart-wrap-sm { position: relative; height: 180px; }
  .chart-wrap-lg { position: relative; height: 300px; }

  /* PAID/ORGANIC SPLIT BAR */
  .split-section { margin-bottom: 24px; }
  .split-row { display: flex; gap: 14px; margin-bottom: 14px; }
  .split-card {
    flex: 1; background: var(--card); border-radius: var(--radius);
    padding: 18px 20px; box-shadow: var(--shadow); border: 1px solid var(--border);
    border-top: 3px solid;
    transition: all .25s ease;
  }
  .split-card:hover { border-color: rgba(255,255,255,.1); border-top-color: inherit; }
  .split-card.paid-card { border-top-color: var(--paid); }
  .split-card.organic-card { border-top-color: var(--organic); }
  .split-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
  .split-type { font-size: 13px; font-weight: 700; color: #FFFFFF; display: flex; align-items: center; gap: 8px; }
  .split-icon { width: 28px; height: 28px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 14px; }
  .paid-icon { background: rgba(245,158,11,.15); }
  .organic-icon { background: rgba(16,185,129,.15); }
  .split-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .split-metric-label { font-size: 11px; color: #9CA3AF; font-weight: 600; text-transform: uppercase; letter-spacing: .4px; }
  .split-metric-value {
    font-size: 20px; font-weight: 700; margin-top: 4px; color: #FFFFFF;
    cursor: text; outline: none; border: none; background: transparent;
    width: 100%; font-family: inherit; caret-color: var(--accent); padding: 0;
  }
  .split-metric-value:focus { color: var(--accent-light); }

  /* PLATFORM TABLE */
  .platform-table-wrap { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border); overflow: hidden; margin-bottom: 24px; animation: fadeInUp .5s ease both; }
  table { width: 100%; border-collapse: collapse; }
  thead tr { background: var(--bg2); }
  th { text-align: left; padding: 12px 16px; font-size: 11.5px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; border-bottom: 1px solid var(--border); }
  td { padding: 13px 16px; font-size: 14px; color: var(--text); border-bottom: 1px solid var(--border); vertical-align: middle; }
  tr:last-child td { border-bottom: none; }
  tr:hover td { background: rgba(99,102,241,.04); }
  .platform-name { display: flex; align-items: center; gap: 10px; font-weight: 600; }
  .platform-chip { width: 28px; height: 28px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 14px; flex-shrink: 0; background: rgba(255,255,255,.05) !important; }
  .editable-cell {
    cursor: text; outline: none; border: none; background: transparent;
    font-family: inherit; font-size: 14px; width: 80px; padding: 0;
    color: var(--text);
    caret-color: var(--accent);
  }
  .editable-cell:focus { color: var(--accent-light); text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 3px; }
  .month-row:hover { background: rgba(99,102,241,.06); }
  .ad-detail-row { background: rgba(0,0,0,.15); }
  .ad-detail-row:hover { background: rgba(99,102,241,.06); }
  .ad-detail-row td { border-top: 1px dashed rgba(255,255,255,.05) !important; }
  .type-pill { display: inline-block; font-size: 10.5px; font-weight: 700; padding: 2px 8px; border-radius: 20px; }
  .type-pill.paid { background: rgba(245,158,11,.15); color: #FBBF24; }
  .type-pill.organic { background: rgba(16,185,129,.15); color: #34D399; }

  /* DIVIDER */
  .divider { height: 1px; background: var(--border); margin: 28px 0; }

  /* EDIT HINT */
  .edit-hint { font-size: 12px; color: var(--muted); display: flex; align-items: center; gap: 5px; margin-bottom: 16px; }
  .edit-hint svg { opacity: .6; }

  /* TAB CONTENT */
  .tab-content { display: none; }
  .tab-content.active { display: block; }

  /* RESPONSIVE */
  @media (max-width: 900px) {
    .chart-grid, .chart-grid-3 { grid-template-columns: 1fr; }
    .split-metrics { grid-template-columns: repeat(2, 1fr); }
    .kpi-grid { grid-template-columns: repeat(2, 1fr); }
    .kpi-grid-6 { grid-template-columns: repeat(3, 1fr); }
  }
  @media (max-width: 600px) {
    .main { padding: 16px; }
    .header { padding: 0 16px; }
    .tabs-bar { padding: 0 16px; }
    .split-row { flex-direction: column; }
  }

  @media (max-width: 768px) {
    .kpi-grid-6 { grid-template-columns: repeat(2, 1fr); }
  }

  /* INSIGHT CARD */
  .insight-card {
    background: linear-gradient(135deg, rgba(99,102,241,.08), rgba(59,130,246,.06));
    border: 1px solid rgba(99,102,241,.2);
    border-left: 4px solid var(--accent);
    border-radius: var(--radius);
    padding: 18px 22px;
    margin-bottom: 24px;
    display: flex; align-items: flex-start; gap: 12px;
    animation: fadeInUp .6s ease both;
  }
  .insight-icon { font-size: 20px; flex-shrink: 0; margin-top: 1px; }
  .insight-title { font-size: 13px; font-weight: 700; color: var(--accent-light); margin-bottom: 4px; text-transform: uppercase; letter-spacing: .5px; }
  .insight-text { font-size: 14px; color: var(--text); line-height: 1.6; }

  /* SECTION DIVIDER */
  .section-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
    margin: 28px 0;
  }

  /* STAT BAR (horizontal progress) */
  .stat-bar-wrap { margin-bottom: 10px; }
  .stat-bar-label { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
  .stat-bar-label span:last-child { font-weight: 600; color: var(--text); }
  .stat-bar { height: 6px; background: rgba(255,255,255,.06); border-radius: 3px; overflow: hidden; }
  .stat-bar-fill { height: 100%; border-radius: 3px; transition: width .6s ease; }

  /* PRINT */
  @media print {
    .header, .tabs-bar { position: static; }
    .tab-content { display: block !important; page-break-before: always; }
    .import-bar { display: none; }
    body { background: #fff; color: #111; }
    .kpi-card, .chart-card, .platform-table-wrap, .split-card { border-color: #ddd; background: #fff; }
  }

  /* ===== IMPORT BAR ===== */
  .import-bar {
    display: none;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    padding: 0 28px;
  }
  .import-bar-inner {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 0;
    flex-wrap: wrap;
  }
  .import-label {
    font-size: 12.5px; font-weight: 700; color: var(--muted);
    text-transform: uppercase; letter-spacing: .5px;
    white-space: nowrap;
    display: flex; align-items: center; gap: 6px;
  }
  .import-divider { width: 1px; height: 22px; background: var(--border); }
  .import-btns { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
  .import-btn {
    position: relative; display: flex; align-items: center; gap: 6px;
    padding: 6px 13px; border-radius: 8px; font-size: 12.5px; font-weight: 600;
    border: 1px solid var(--border); background: var(--bg); color: var(--text);
    cursor: pointer; transition: all .15s; white-space: nowrap;
  }
  .import-btn:hover { border-color: currentColor; background: var(--card); }
  .import-btn input[type="file"] {
    position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
  }
  .import-btn.meta-ads-btn { color: var(--meta); }
  .import-btn.fb-btn { color: var(--fb); }
  .import-btn.ig-btn { color: var(--ig); }
  .import-btn.yt-btn { color: var(--yt); }
  .import-btn.tt-btn { color: var(--tt); }
  .import-btn.success { background: rgba(16,185,129,.15); border-color: var(--organic); color: #34D399; }

  /* TOAST */
  .toast {
    position: fixed; bottom: 24px; right: 24px; z-index: 9999;
    background: var(--card); color: var(--text); border: 1px solid var(--border);
    padding: 13px 20px; border-radius: 10px;
    font-size: 13.5px; font-weight: 500;
    box-shadow: 0 8px 32px rgba(0,0,0,.2);
    display: flex; align-items: center; gap: 10px;
    transform: translateY(80px); opacity: 0;
    transition: all .3s cubic-bezier(.34,1.56,.64,1);
    max-width: 360px;
  }
  .toast.show { transform: translateY(0); opacity: 1; }
  .toast.error { background: #EF4444; }
  .toast-icon { font-size: 16px; }

  /* IMPORT MODAL */
  .modal-overlay {
    display: none; position: fixed; inset: 0; z-index: 500;
    background: rgba(0,0,0,.4); backdrop-filter: blur(2px);
    align-items: center; justify-content: center;
  }
  .modal-overlay.open { display: flex; }
  .modal {
    background: var(--card); border-radius: 16px;
    width: 90%; max-width: 560px;
    box-shadow: 0 24px 64px rgba(0,0,0,.2);
    overflow: hidden;
  }
  .modal-header {
    padding: 20px 24px 0; display: flex; justify-content: space-between; align-items: flex-start;
  }
  .modal-title { font-size: 16px; font-weight: 700; }
  .modal-subtitle { font-size: 13px; color: var(--muted); margin-top: 3px; }
  .modal-close { background: none; border: none; font-size: 20px; cursor: pointer; color: var(--muted); padding: 0; line-height: 1; }
  .modal-close:hover { color: var(--text); }
  .modal-body { padding: 20px 24px 24px; }
  .drop-zone {
    border: 2px dashed var(--border); border-radius: 12px;
    padding: 32px; text-align: center;
    cursor: pointer; transition: all .2s;
    position: relative;
  }
  .drop-zone:hover, .drop-zone.drag-over {
    border-color: var(--accent); background: rgba(99,102,241,.08);
  }
  .drop-zone input { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; }
  .drop-icon { font-size: 32px; margin-bottom: 8px; }
  .drop-text { font-size: 14px; font-weight: 600; color: var(--text); }
  .drop-sub { font-size: 12px; color: var(--muted); margin-top: 4px; }
  .format-hint {
    margin-top: 16px; background: var(--bg); border-radius: 10px; padding: 14px 16px;
    font-size: 12.5px; color: var(--muted); line-height: 1.6;
  }
  .format-hint strong { color: var(--text); }