:root {
  color-scheme: light;
  --page-plane:     #f3f5f8;
  --surface-1:      #ffffff;
  --surface-2:      #f7f9fb;
  --text-primary:   #0f1720;
  --text-secondary: #4a5563;
  --text-muted:     #7b8594;
  --gridline:       #e3e7ec;
  --baseline:       #b9c0ca;
  --border:         rgba(15,23,32,0.09);
  --shadow:         0 1px 2px rgba(15,23,32,0.04), 0 4px 16px rgba(15,23,32,0.05);

  --brand:          #1f6fd1;
  --brand-soft:     rgba(31,111,209,0.10);
  --on-brand:       #ffffff;

  --series-blue:    #2a78d6;
  --series-orange:  #eb6834;
  --series-red:     #e34948;
  --diverging-mid:  #f0efec;

  --status-good:     #0a8f0a;
  --status-warning:  #fab219;
  --status-serious:  #ec835a;
  --status-critical: #d03b3b;
  --warning-text:    #8a5a00;

  --delta-up-good:  #006300;

  --header-bg:      #000000;
  --header-text:    #ffffff;
  --header-sub:     #a9b4c2;
  --header-accent:  #3d9bff;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page-plane:     #0b0d10;
    --surface-1:      #14171c;
    --surface-2:      #1a1e24;
    --text-primary:   #f2f5f8;
    --text-secondary: #b3bcc8;
    --text-muted:     #7f8896;
    --gridline:       #262b33;
    --baseline:       #3a414b;
    --border:         rgba(255,255,255,0.08);
    --shadow:         0 1px 2px rgba(0,0,0,0.3), 0 4px 16px rgba(0,0,0,0.25);

    --brand:          #4ea1ff;
    --brand-soft:     rgba(78,161,255,0.14);
  --on-brand:       #04111f;

    --series-blue:    #3987e5;
    --series-orange:  #d95926;
    --series-red:     #e66767;
    --diverging-mid:  #383835;

    --status-good:     #22b322;
    --status-critical: #e66767;
    --warning-text:    #ffce6b;
    --delta-up-good:  #22b322;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page-plane:     #0b0d10;
  --surface-1:      #14171c;
  --surface-2:      #1a1e24;
  --text-primary:   #f2f5f8;
  --text-secondary: #b3bcc8;
  --text-muted:     #7f8896;
  --gridline:       #262b33;
  --baseline:       #3a414b;
  --border:         rgba(255,255,255,0.08);
  --shadow:         0 1px 2px rgba(0,0,0,0.3), 0 4px 16px rgba(0,0,0,0.25);

  --brand:          #4ea1ff;
  --brand-soft:     rgba(78,161,255,0.14);
  --on-brand:       #04111f;

  --series-blue:    #3987e5;
  --series-orange:  #d95926;
  --series-red:     #e66767;
  --diverging-mid:  #383835;

  --status-good:     #22b322;
  --status-critical: #e66767;
  --warning-text:    #ffce6b;
  --delta-up-good:  #22b322;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--page-plane);
  color: var(--text-primary);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand); text-decoration-thickness: 1px; text-underline-offset: 2px; }

.page {
  max-width: 1120px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

.muted { color: var(--text-secondary); }
.small { font-size: 13px; }

/* ---- brand header ---- */
.brand-bar {
  position: relative;
  background:
    radial-gradient(ellipse 60% 120% at 100% 0%, rgba(61,155,255,0.18), transparent 60%),
    var(--header-bg);
  color: var(--header-text);
  border-bottom: 1px solid rgba(61,155,255,0.35);
  padding-top: env(safe-area-inset-top, 0px);
}
.brand-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 20px 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px 28px;
}
.brand-logo {
  width: 168px;
  height: auto;
  flex-shrink: 0;
  display: block;
}
.brand-text { flex: 1 1 360px; min-width: 0; }
.brand-eyebrow {
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--header-accent);
}
.brand-bar h1 {
  margin: 0 0 8px;
  font-size: clamp(24px, 3.2vw, 34px);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--header-text);
}
.subtitle {
  margin: 0;
  color: var(--header-sub);
  max-width: 62ch;
  font-size: 15px;
}
.topbar-actions { display: flex; align-items: center; gap: 12px; }

/* ---- back link to psyphin.co.za ---- */
.back-nav {
  max-width: 1120px;
  margin: 0 auto;
  padding: 12px 20px 0;
}
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--header-sub);
  text-decoration: none;
  transition: color .15s ease;
}
.back-link:hover { color: var(--header-accent); }
.back-link:focus-visible { outline: 2px solid var(--header-accent); outline-offset: 3px; border-radius: 4px; }

/* ---- buttons ---- */
.btn {
  font: inherit;
  font-weight: 600;
  font-size: 14px;
  border-radius: 10px;
  padding: 10px 18px;
  border: 1px solid var(--border);
  background: var(--surface-1);
  color: var(--text-primary);
  cursor: pointer;
  transition: background-color .15s ease, border-color .15s ease, transform .05s ease;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .6; cursor: progress; }
.btn:focus-visible { outline: 2px solid var(--header-accent); outline-offset: 2px; }
.btn-primary {
  background: var(--header-accent);
  border-color: var(--header-accent);
  color: #04111f;
}
.btn-primary:hover { background: #62afff; border-color: #62afff; }
.btn-danger {
  background: transparent;
  border-color: var(--status-critical);
  color: var(--status-critical);
  padding: 4px 12px;
  font-size: 13px;
}

/* ---- status bar ---- */
.status-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--surface-1);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  color: var(--text-primary);
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--status-good);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--status-good) 22%, transparent);
  flex-shrink: 0;
}
.countdown-pill.urgent {
  border-color: var(--status-warning);
  color: var(--warning-text);
}

/* ---- fuel tabs (segmented control) ---- */
.fuel-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 4px;
  margin-bottom: 24px;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  width: fit-content;
  max-width: 100%;
}
.fuel-tab {
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  background: none;
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease;
}
.fuel-tab:hover { color: var(--text-primary); background: var(--surface-2); }
.fuel-tab:focus-visible { outline: 2px solid var(--brand); outline-offset: 1px; }
.fuel-tab[aria-selected="true"] {
  color: var(--on-brand);
  background: var(--brand);
  font-weight: 600;
}

/* ---- loading / error ---- */
.loading-state, .error-state {
  padding: 64px 16px;
  text-align: center;
  color: var(--text-secondary);
}
.error-state { color: var(--status-critical); }

/* ---- hero ---- */
.hero {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}
.hero-card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 22px;
  box-shadow: var(--shadow);
}
.hero-card--predicted {
  position: relative;
  border-color: color-mix(in srgb, var(--brand) 45%, transparent);
  background: linear-gradient(180deg, var(--brand-soft), transparent 70%), var(--surface-1);
}
.hero-label {
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.hero-value {
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
  margin-bottom: 8px;
}
.hero-sub { color: var(--text-secondary); font-size: 13px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
}
.hero-badge.increase { background: color-mix(in srgb, var(--status-critical) 14%, transparent); color: var(--status-critical); }
.hero-badge.decrease { background: color-mix(in srgb, var(--status-good) 14%, transparent); color: var(--delta-up-good); }
.hero-badge.flat { background: color-mix(in srgb, var(--text-muted) 18%, transparent); color: var(--text-secondary); }
.hero-value.increase { color: var(--status-critical); }
.hero-value.decrease { color: var(--delta-up-good); }

/* ---- panels ---- */
.panel {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.panel-head { margin-bottom: 16px; }
.panel-head h2 {
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 650;
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.panel-head p { margin: 0 0 6px; max-width: 80ch; }
.panel-head p:last-child { margin-bottom: 0; }
.chart-wrap { position: relative; height: 320px; }
.chart-wrap--short { height: 240px; }

/* ---- table ---- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--gridline);
  border-radius: 10px;
}
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; font-size: 14px; }
th, td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--gridline); white-space: nowrap; }
thead th {
  background: var(--surface-2);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--surface-2); }
td.num, th.num { text-align: right; }

.src-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 999px;
}
.src-badge.cef_official { background: color-mix(in srgb, var(--series-blue) 14%, transparent); color: var(--brand); }
.src-badge.estimated { background: color-mix(in srgb, var(--status-warning) 24%, transparent); color: var(--warning-text); }
.src-badge.manual { background: color-mix(in srgb, var(--status-good) 14%, transparent); color: var(--delta-up-good); }

/* ---- manual form ---- */
.manual-form {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: end;
  margin-bottom: 16px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--gridline);
}
.field { display: flex; flex-direction: column; gap: 6px; min-width: 180px; }
.field label { font-size: 13px; font-weight: 500; color: var(--text-secondary); }
.field input {
  font: inherit;
  padding: 9px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-primary);
}
.field input:focus { outline: 2px solid var(--brand); outline-offset: 0; border-color: transparent; }
.field-actions { min-width: unset; }
.manual-form .btn-primary { background: var(--brand); border-color: var(--brand); color: var(--on-brand); }

.manual-list-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--gridline);
  font-size: 14px;
}
.manual-list-row:last-child { border-bottom: none; }

/* ---- accuracy meter ---- */
.accuracy-body {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
}
.accuracy-meter { flex: 1 1 220px; min-width: 160px; }
.accuracy-meter-track {
  height: 12px;
  border-radius: 999px;
  background: var(--gridline);
  overflow: hidden;
}
.accuracy-meter-fill {
  height: 100%;
  border-radius: 999px;
  background: var(--status-good);
  width: 0%;
  transition: width 0.4s ease;
}
.accuracy-meter-fill.warning { background: var(--status-warning); }
.accuracy-meter-fill.critical { background: var(--status-critical); }
.accuracy-meter-fill.unknown { background: var(--text-muted); }
.accuracy-text { flex: 2 1 260px; }
.accuracy-headline { font-size: 18px; font-weight: 650; margin-bottom: 2px; }

/* ---- fx panel ---- */
.fx-current { display: flex; flex-wrap: wrap; align-items: baseline; gap: 12px; margin-bottom: 16px; }
.fx-value { font-size: 28px; font-weight: 700; letter-spacing: -0.01em; font-variant-numeric: tabular-nums; }
.fx-change {
  font-size: 13px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
}
.fx-change.up { color: var(--status-critical); background: color-mix(in srgb, var(--status-critical) 14%, transparent); }
.fx-change.down { color: var(--delta-up-good); background: color-mix(in srgb, var(--status-good) 14%, transparent); }
.fx-change.flat { color: var(--text-secondary); background: color-mix(in srgb, var(--text-muted) 18%, transparent); }

/* ---- disclaimer / footer ---- */
.disclaimer { background: var(--surface-2); box-shadow: none; }
.disclaimer h2 { margin: 0 0 8px; font-size: 16px; font-weight: 650; }
.disclaimer p { color: var(--text-secondary); margin: 0 0 8px; max-width: 90ch; }
.disclaimer p:last-child { margin-bottom: 0; }

.site-footer {
  border-top: 1px solid var(--border);
  padding: 20px 20px calc(24px + env(safe-area-inset-bottom, 0px));
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; }
  .hero-value { font-size: 30px; }
  .brand-inner { padding: 16px; gap: 14px 18px; }
  .back-nav { padding: 10px 16px 0; }
  .brand-logo { width: 112px; }
  .brand-text { flex-basis: 200px; }
  .subtitle { font-size: 14px; }
  .topbar-actions { width: 100%; }
  .topbar-actions .btn { width: 100%; }
  .page { padding: 20px 16px 40px; }
  .panel { padding: 18px 16px; }
  .chart-wrap { height: 260px; }
  .chart-wrap--short { height: 200px; }
  .fuel-tab { padding: 8px 12px; }
  .field { min-width: 0; flex: 1 1 140px; }
}

/* ---- estimate vs official comparison ---- */
.has-compare {
  cursor: help;
  border-bottom: 1px dashed var(--text-muted);
  border-radius: 2px;
}
.has-compare:hover, .has-compare:focus { color: var(--brand); border-bottom-color: var(--brand); outline: none; }
.compare-tip {
  position: fixed;
  z-index: 50;
  min-width: 220px;
  max-width: 280px;
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--surface-1);
  border: 1px solid var(--border);
  box-shadow: 0 8px 28px rgba(0,0,0,0.18);
  font-size: 13px;
  pointer-events: none;
}
.compare-tip[hidden] { display: none; }
.compare-tip-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.compare-tip-row { display: flex; justify-content: space-between; gap: 16px; font-variant-numeric: tabular-nums; }
.compare-tip-row span { color: var(--text-secondary); }
.compare-tip-verdict {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--gridline);
  font-weight: 600;
}

/* ---- days with no CEF data ---- */
.no-data-row td { color: var(--text-muted); background: var(--surface-2); }
.src-badge.none { background: color-mix(in srgb, var(--text-muted) 16%, transparent); color: var(--text-secondary); }
.no-data-row td.est-value { font-style: italic; }
.fn-mark { font-size: 0.75em; margin-left: 1px; color: var(--text-muted); font-style: normal; }
.table-notes { margin-top: 12px; }
.table-notes p { margin: 0 0 4px; font-size: 12px; color: var(--text-secondary); max-width: 100ch; }