/* ============================================================
   Stripe CBFS Dashboard — Anton Schneider
   Aesthetic: crisp navy + electric purple, serif-accented KPIs
   ============================================================ */

:root {
  --navy: #0A2540;
  --navy-80: rgba(10, 37, 64, 0.8);
  --navy-60: rgba(10, 37, 64, 0.6);
  --navy-40: rgba(10, 37, 64, 0.4);
  --navy-10: rgba(10, 37, 64, 0.08);
  --navy-ultra: #061A2E;
  --purple: #635BFF;
  --purple-soft: #E8E6FF;
  --purple-dim: #B8B5FF;
  --white: #ffffff;
  --off-white: #F7F7FA;
  --cream: #FBFAF6;
  --green: #00A67E;
  --green-soft: #D1F0E6;
  --red: #C41E3A;
  --red-soft: #FBD9E0;
  --amber: #E69138;
  --grey: #6C7180;
  --grey-soft: #E5E7EB;
  --grey-line: #D1D5DB;
  --grey-bg: #F2F2F4;
  --shadow-soft: 0 1px 2px rgba(10, 37, 64, 0.04), 0 2px 8px rgba(10, 37, 64, 0.04);
  --shadow-md: 0 4px 20px rgba(10, 37, 64, 0.08);
  --radius: 10px;
  --radius-sm: 6px;
}

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

body {
  font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 14px;
  color: var(--navy);
  background: var(--cream);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

h1, h2, h3, h4 { margin: 0; font-weight: 600; color: var(--navy); }
h1 { font-size: 28px; letter-spacing: -0.01em; font-weight: 500; }
h2 { font-size: 20px; }
h3 { font-size: 15px; text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600; color: var(--navy-60); }

a { color: var(--purple); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ============================================================
   LOADING / ERROR OVERLAYS
   ============================================================ */
.loading {
  position: fixed; inset: 0;
  background: var(--cream);
  z-index: 1000;
  display: flex; align-items: center; justify-content: center;
  transition: opacity 300ms ease;
}
.loading.hidden { opacity: 0; pointer-events: none; }
.loading-inner { text-align: center; }
.loading-spinner {
  width: 40px; height: 40px;
  border: 3px solid var(--purple-soft);
  border-top-color: var(--purple);
  border-radius: 50%;
  margin: 0 auto 20px;
  animation: spin 800ms linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text { font-family: 'DM Serif Display', serif; font-size: 22px; color: var(--navy); margin-bottom: 6px; }
.loading-subtext { font-size: 13px; color: var(--grey); }

.error-overlay {
  position: fixed; inset: 0;
  background: var(--cream);
  z-index: 1000;
  display: flex; align-items: center; justify-content: center;
  padding: 40px;
}
.error-overlay.hidden { display: none; }
.error-inner {
  max-width: 500px;
  text-align: center;
  background: white;
  padding: 40px;
  border: 2px solid var(--red);
  border-radius: var(--radius);
}
.error-inner h2 { color: var(--red); margin-bottom: 16px; }
.error-inner p { color: var(--grey); margin-bottom: 24px; font-size: 14px; text-align: left; background: var(--grey-bg); padding: 12px; border-radius: var(--radius-sm); font-family: 'IBM Plex Mono', monospace; font-size: 12px; word-break: break-all; }
.error-inner button {
  background: var(--navy); color: white; border: none;
  padding: 10px 20px; border-radius: var(--radius-sm);
  font-weight: 500; cursor: pointer; font-family: inherit;
}

/* ============================================================
   TOP BAR
   ============================================================ */
.top-bar {
  position: sticky; top: 0; z-index: 100;
  background: var(--navy);
  color: white;
  padding: 14px 32px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 16px; }
.brand-mark {
  width: 42px; height: 42px;
  background: var(--purple);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-family: 'DM Serif Display', serif;
  font-weight: 400;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: white;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.08) inset;
}
.brand-title { font-family: 'DM Serif Display', serif; font-size: 18px; color: white; line-height: 1.1; }
.brand-sub { font-size: 11px; color: rgba(255,255,255,0.6); letter-spacing: 0.02em; margin-top: 2px; }

.top-controls { display: flex; align-items: center; gap: 16px; }

.check-badge {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 12px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.check-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--grey);
}
.check-badge.ok .check-dot { background: var(--green); box-shadow: 0 0 0 3px rgba(0, 166, 126, 0.2); }
.check-badge.error .check-dot { background: var(--red); box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.3); animation: pulse-red 2s infinite; }
@keyframes pulse-red { 0%, 100% { box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.3); } 50% { box-shadow: 0 0 0 6px rgba(196, 30, 58, 0.1); } }
.check-badge.ok { background: rgba(0, 166, 126, 0.15); border-color: rgba(0, 166, 126, 0.3); color: #A8ECD4; }
.check-badge.error { background: rgba(196, 30, 58, 0.18); border-color: rgba(196, 30, 58, 0.35); color: #FFB3C0; }

.scenario-toggle {
  display: flex;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 999px;
  padding: 3px;
  gap: 0;
}
.scen-btn {
  background: transparent;
  color: rgba(255,255,255,0.7);
  border: none;
  padding: 6px 16px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.03em;
  cursor: pointer;
  border-radius: 999px;
  transition: all 150ms ease;
}
.scen-btn:hover { color: white; }
.scen-btn.active {
  background: var(--purple);
  color: white;
  box-shadow: 0 2px 8px rgba(99, 91, 255, 0.4);
}

.refresh-btn {
  display: flex; align-items: center; gap: 6px;
  background: transparent;
  color: rgba(255,255,255,0.8);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 7px 14px;
  border-radius: 999px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 150ms ease;
}
.refresh-btn:hover {
  background: rgba(255,255,255,0.08);
  color: white;
}
.refresh-btn.refreshing .refresh-icon { animation: spin 800ms linear infinite; display: inline-block; }
.refresh-icon { display: inline-block; font-size: 14px; }

/* ============================================================
   TAB NAV
   ============================================================ */
.tab-nav {
  background: white;
  border-bottom: 1px solid var(--grey-soft);
  padding: 0 32px;
  display: flex;
  gap: 2px;
  position: sticky;
  top: 70px;
  z-index: 99;
  overflow-x: auto;
}
.tab-btn {
  background: transparent;
  border: none;
  padding: 16px 20px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  color: var(--grey);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 150ms ease;
  white-space: nowrap;
  letter-spacing: 0.01em;
}
.tab-btn:hover { color: var(--navy); }
.tab-btn.active {
  color: var(--navy);
  border-bottom-color: var(--purple);
  font-weight: 600;
}

/* Memo tab — styled to match .tab-btn but is an external anchor link */
.tab-link {
  background: transparent;
  border: none;
  padding: 16px 20px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  color: var(--grey);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 150ms ease;
  white-space: nowrap;
  letter-spacing: 0.01em;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.tab-link:hover { color: var(--navy); text-decoration: none; }
.tab-link .ext-icon {
  font-size: 11px;
  opacity: 0.55;
  margin-left: 1px;
}
.tab-link:hover .ext-icon { opacity: 0.9; }

/* ============================================================
   PANELS
   ============================================================ */
main {
  padding: 32px;
  max-width: 1600px;
  margin: 0 auto;
}
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeIn 200ms ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.panel-header {
  margin-bottom: 24px;
  display: flex; justify-content: space-between; align-items: flex-end; gap: 20px;
  flex-wrap: wrap;
}
.panel-meta {
  font-size: 13px; color: var(--grey); margin-top: 4px;
}
.scen-inline {
  font-weight: 600; color: var(--purple);
}

.sheet-scenario-note {
  background: var(--purple-soft);
  border-left: 3px solid var(--purple);
  color: var(--navy);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  margin-bottom: 20px;
  line-height: 1.5;
}
.sheet-scenario-note:empty { display: none; }

/* ============================================================
   KPI CARDS
   ============================================================ */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}
.kpi-card {
  background: white;
  border: 1px solid var(--grey-soft);
  border-radius: var(--radius);
  padding: 20px 22px;
  position: relative;
  overflow: hidden;
  transition: border-color 200ms ease, transform 200ms ease;
}
.kpi-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--purple), var(--navy));
  opacity: 0;
  transition: opacity 200ms ease;
}
.kpi-card:hover {
  border-color: var(--purple-dim);
  transform: translateY(-1px);
}
.kpi-card:hover::before { opacity: 1; }
.kpi-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--grey);
  font-weight: 600;
  margin-bottom: 8px;
}
.kpi-value {
  font-family: 'DM Serif Display', serif;
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--navy);
  line-height: 1.1;
}
.kpi-detail {
  font-size: 12px;
  color: var(--grey);
  margin-top: 6px;
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 500;
}

/* ============================================================
   TWO-COL LAYOUT FOR CHARTS
   ============================================================ */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
.chart-card {
  background: white;
  border: 1px solid var(--grey-soft);
  border-radius: var(--radius);
  padding: 20px;
}
.chart-card h3 { margin-bottom: 14px; }
.chart-wrap {
  position: relative;
  height: 280px;
}

/* ============================================================
   NOTE BOX
   ============================================================ */
.note {
  background: white;
  border: 1px solid var(--grey-soft);
  border-radius: var(--radius);
  padding: 20px;
  font-size: 13px;
  color: var(--navy-80);
  line-height: 1.6;
}
.note h3 { margin-bottom: 10px; }
.note ul { margin: 0; padding-left: 20px; }
.note li { margin-bottom: 6px; }

/* ============================================================
   TABLES
   ============================================================ */
.table-scroll {
  overflow-x: auto;
  overflow-y: visible;
  background: white;
  border: 1px solid var(--grey-soft);
  border-radius: var(--radius);
  max-width: 100%;
  position: relative;
}
table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
  font-variant-numeric: tabular-nums;
}
.data-table thead {
  background: var(--navy);
  color: white;
}
.data-table th {
  padding: 12px 10px;
  text-align: right;
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  white-space: nowrap;
  border-right: 1px solid rgba(255,255,255,0.1);
}
.data-table th:first-child { text-align: left; padding-left: 20px; }
.data-table th.block-header {
  background: var(--purple);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 8px 10px;
  text-align: center;
}
.data-table td {
  padding: 9px 10px;
  text-align: right;
  border-bottom: 1px solid var(--grey-soft);
  white-space: nowrap;
}
.data-table td:first-child { text-align: left; font-weight: 500; padding-left: 20px; color: var(--navy); }
/* Hover effect only on body rows, not header rows */
.data-table tbody tr:hover td:not(.sticky-col) { background: var(--off-white); }
.data-table tbody tr:hover td.sticky-col { background: var(--off-white); }
.data-table .section-row td {
  background: var(--navy);
  color: white;
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 10px 20px;
}
.data-table .section-row td:first-child { padding-left: 20px; }
.data-table tbody tr.section-row:hover td { background: var(--navy); }
.data-table .sub-header-row td {
  background: var(--purple-soft);
  color: var(--navy);
  font-weight: 600;
  font-size: 11px;
  padding: 8px 20px;
  letter-spacing: 0.04em;
}
.data-table tbody tr.sub-header-row:hover td { background: var(--purple-soft); }
.data-table .bold-row td { font-weight: 600; }
.data-table .indent { padding-left: 36px; font-style: italic; color: var(--navy-60); }

.data-table td.cell-current { background: var(--purple-soft); }
.data-table td.cell-variance { background: var(--grey-bg); color: var(--navy-60); font-size: 12px; font-variant-numeric: tabular-nums; }
.data-table td.act-year { background: var(--purple-soft); }
.data-table td.fcst-year { background: #E2EFDA; }

.data-table td.pos { color: var(--green); font-weight: 500; }
.data-table td.neg { color: var(--red); font-weight: 500; }

/* Centered headers (for Scenarios tab) */
.data-table th.center-header { text-align: center; }

/* Sticky first column (for CYO and Scenarios tables) */
.data-table .sticky-col {
  position: sticky;
  left: 0;
  z-index: 2;
  background: white;
  box-shadow: 2px 0 4px rgba(10, 37, 64, 0.05);
}
.data-table thead .sticky-col { background: var(--navy); z-index: 3; }
.data-table tbody .sticky-col { text-align: left; }
.data-table .section-row .sticky-col { background: var(--navy); color: white; z-index: 2; }
.data-table .sub-header-row .sticky-col { background: var(--purple-soft); color: var(--navy); z-index: 2; }

/* Sticky thead for CYO table */
.cyo-table thead { position: sticky; top: 0; z-index: 10; }
.cyo-table thead th { background: var(--navy); }
.cyo-table thead .sub-header-sticky th { background: var(--navy); color: white; font-weight: 500; }
.cyo-table thead .gap-col { background: var(--navy); }
.cyo-table tbody .gap-col { background: white; border-bottom: none; padding: 0; width: 8px; }
.cyo-table tbody tr:hover .gap-col { background: var(--off-white); }

/* CYO specific: compact cells to fit 4 blocks × 4 cols + gaps */
.cyo-table {
  font-size: 11.5px;
}
.cyo-table th, .cyo-table td {
  padding: 7px 6px;
}
.cyo-table td:first-child, .cyo-table th:first-child {
  padding-left: 16px;
  padding-right: 10px;
  min-width: 220px;
  max-width: 260px;
}
.cyo-table .block-header {
  padding: 8px 6px;
  font-size: 10.5px;
}

/* Scenarios table: compact + sticky */
.scenarios-table {
  font-size: 12px;
}
.scenarios-table th, .scenarios-table td {
  padding: 8px 7px;
}
.scenarios-table .sticky-col {
  min-width: 180px;
  max-width: 220px;
  padding-left: 16px;
}

/* Unit econ "pill" values for LTV/CAC */
.ratio-pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.ratio-pill.good { background: var(--green-soft); color: var(--green); }
.ratio-pill.bad { background: var(--red-soft); color: var(--red); }

/* ============================================================
   UNIT ECONOMICS LAYOUT
   ============================================================ */
.unit-econ-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.unit-econ-card {
  background: white;
  border: 1px solid var(--grey-soft);
  border-radius: var(--radius);
  padding: 24px;
}
.unit-econ-card h3 {
  text-transform: none;
  letter-spacing: 0;
  font-family: 'DM Serif Display', serif;
  font-size: 22px;
  color: var(--navy);
  margin-bottom: 16px;
  font-weight: 400;
}
.ue-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 20px;
  margin-bottom: 20px;
}
.ue-metric-label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--grey); font-weight: 600; }
.ue-metric-value {
  font-family: 'DM Serif Display', serif;
  font-size: 22px;
  color: var(--navy);
  font-weight: 400;
  margin-top: 2px;
}
.ue-ratio-row {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 16px;
  border-top: 1px solid var(--grey-soft);
}
.ue-ratio-label { font-size: 12px; color: var(--grey); font-weight: 500; }
.ue-yearly-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11.5px;
  margin-top: 16px;
}
.ue-yearly-table th {
  text-align: right;
  padding: 6px 4px;
  font-weight: 600;
  color: var(--grey);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--grey-soft);
}
.ue-yearly-table th:first-child { text-align: left; }
.ue-yearly-table td {
  text-align: right;
  padding: 6px 4px;
  font-variant-numeric: tabular-nums;
}
.ue-yearly-table td:first-child { text-align: left; font-weight: 500; color: var(--navy-80); font-size: 11px; }
.ue-yearly-table tr.cum-row td { font-weight: 600; background: var(--off-white); }

/* ============================================================
   SENSITIVITY
   ============================================================ */
.sensitivity-table { font-size: 13px; }
.sens-bar-wrap { position: relative; display: flex; align-items: center; gap: 8px; min-width: 180px; }
.sens-bar-track {
  position: relative;
  flex: 1; height: 12px;
  background: var(--grey-bg);
  border-radius: 999px;
  overflow: hidden;
}
.sens-bar-fill { position: absolute; top: 0; bottom: 0; background: var(--purple); }
.sens-bar-fill.neg { background: var(--red); }

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  margin-top: 60px;
  background: var(--navy);
  color: rgba(255,255,255,0.5);
  padding: 20px 0;
}
.footer-inner {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex; justify-content: space-between;
  font-size: 12px;
  flex-wrap: wrap; gap: 12px;
}
footer a { color: var(--purple-dim); }

/* ============================================================
   INSTRUCTIONS TAB
   ============================================================ */
.instructions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.instruction-card {
  background: white;
  border: 1px solid var(--grey-soft);
  border-radius: var(--radius);
  padding: 24px 26px;
  line-height: 1.55;
}
.instruction-card h3 {
  font-family: 'DM Serif Display', serif;
  text-transform: none;
  letter-spacing: 0;
  font-size: 18px;
  font-weight: 400;
  color: var(--navy);
  margin-bottom: 12px;
}
.instruction-card p {
  font-size: 13px;
  color: var(--navy-80);
  margin: 0 0 10px 0;
}
.instruction-card p:last-child { margin-bottom: 0; }
.instruction-card ul, .instruction-card ol {
  font-size: 13px;
  color: var(--navy-80);
  margin: 8px 0;
  padding-left: 20px;
}
.instruction-card li { margin-bottom: 6px; }
.instruction-card code {
  background: var(--grey-bg);
  padding: 1px 6px;
  border-radius: 4px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11.5px;
  color: var(--purple);
}

@media (max-width: 980px) {
  .instructions-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 980px) {
  .kpi-grid, .unit-econ-grid, .two-col { grid-template-columns: 1fr; }
  main { padding: 20px; }
  .top-bar { flex-direction: column; align-items: flex-start; padding: 12px 20px; gap: 12px; }
  .top-controls { width: 100%; flex-wrap: wrap; }
  h1 { font-size: 22px; }
  .kpi-value { font-size: 28px; }
}

/* hidden utility */
.hidden { display: none !important; }