/* Where It Went. Design system
   Light/dark aware, no external fonts, no dependencies. */

:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --ink: #14171c;
  --ink-2: #4a525e;
  --ink-3: #7b8494;
  --line: #e2e6ec;
  --accent: #0f6e64;      /* deep teal */
  --accent-ink: #0a4c45;
  --warn: #b4531a;        /* burnt amber for waste */
  --warn-bg: #fbeee3;
  --good: #1f7a4d;
  --good-bg: #e7f3ec;
  --flag: #8a1f3d;        /* deep rose for the sharp findings */
  --flag-bg: #f7e7ec;
  --shadow: 0 1px 2px rgba(20, 23, 28, .04), 0 8px 24px rgba(20, 23, 28, .06);
  --radius: 14px;
  --maxw: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1116;
    --surface: #161b22;
    --surface-2: #1c222b;
    --ink: #e8ecf1;
    --ink-2: #b3bcc9;
    --ink-3: #7d8898;
    --line: #262d38;
    --accent: #3fbfae;
    --accent-ink: #7fd8cc;
    --warn: #e08a4e;
    --warn-bg: #2a1e14;
    --good: #57c98a;
    --good-bg: #12241a;
    --flag: #e07a97;
    --flag-bg: #2a141c;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.35);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0; }
h2 { font-size: 1.5rem; margin-bottom: 6px; }
h3 { font-size: 1.05rem; }
p { margin: 8px 0; color: var(--ink-2); }
a { color: var(--accent); }

.eyebrow {
  font-size: .74rem; text-transform: uppercase; letter-spacing: .14em;
  color: var(--ink-3); font-weight: 600;
}

/* ---- top bar ---- */
.topbar {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  position: sticky; top: 0; z-index: 20; backdrop-filter: blur(8px);
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.brand { font-weight: 700; letter-spacing: -.02em; }
.brand span { color: var(--accent); }
.topnav { display: flex; gap: 18px; font-size: .86rem; }
.topnav a { color: var(--ink-2); text-decoration: none; }
.topnav a:hover { color: var(--ink); }
@media (max-width: 720px) { .topnav { display: none; } }

/* ---- section frame ---- */
section { padding: 56px 0; border-bottom: 1px solid var(--line); }
.section-head { max-width: 660px; margin-bottom: 26px; }

/* ---- hero ---- */
.hero { padding: 64px 0 48px; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; } }
.hero h1 { font-size: 2.6rem; margin-bottom: 14px; }
.hero .lede { font-size: 1.12rem; color: var(--ink-2); }
.hero-figure { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }

.stat-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 22px; }
.stat {
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px;
  padding: 14px 16px; min-width: 132px; box-shadow: var(--shadow);
}
.stat .k { font-size: 1.5rem; font-weight: 700; letter-spacing: -.03em; }
.stat .l { font-size: .78rem; color: var(--ink-3); }
.stat.warn .k { color: var(--warn); }
.stat.flag .k { color: var(--flag); }
.stat.good .k { color: var(--good); }

/* ---- verdict banner ---- */
.verdict {
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 28px; box-shadow: var(--shadow);
}
.verdict .big { font-size: 2rem; font-weight: 700; letter-spacing: -.03em; color: var(--accent-ink); }
@media (prefers-color-scheme: dark) { .verdict .big { color: var(--accent-ink); } }

/* ---- tiers ---- */
.tier { margin-bottom: 18px; }
.tier-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 10px; }
.tier-tag {
  font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em;
  padding: 3px 9px; border-radius: 999px;
}
.tier-1 .tier-tag { background: var(--flag-bg); color: var(--flag); }
.tier-2 .tier-tag { background: var(--warn-bg); color: var(--warn); }
.tier-3 .tier-tag { background: var(--surface-2); color: var(--ink-2); }
.tier-total { margin-left: auto; font-weight: 700; font-size: 1.05rem; }

.flag-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px;
  padding: 14px 16px; margin-bottom: 8px; box-shadow: var(--shadow);
}
.flag-card summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; gap: 12px;
}
.flag-card summary::-webkit-details-marker { display: none; }
.flag-name { font-weight: 600; }
.flag-cost { margin-left: auto; font-weight: 700; white-space: nowrap; }
.flag-reason { color: var(--ink-2); font-size: .92rem; margin: 10px 0 4px; }
.badge {
  font-size: .68rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em;
  padding: 2px 7px; border-radius: 6px; background: var(--surface-2); color: var(--ink-3);
}
.badge.high { background: var(--flag-bg); color: var(--flag); }
.badge.medium { background: var(--warn-bg); color: var(--warn); }
.badge.context { background: var(--surface-2); color: var(--ink-2); }

.txn-list { margin-top: 8px; border-top: 1px dashed var(--line); padding-top: 8px; }
.txn-row { display: flex; gap: 10px; font-size: .84rem; color: var(--ink-2); padding: 3px 0; }
.txn-row .d { color: var(--ink-3); font-variant-numeric: tabular-nums; }
.txn-row .a { margin-left: auto; font-variant-numeric: tabular-nums; }

/* ---- generic card + grid ---- */
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 22px; box-shadow: var(--shadow);
}
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 780px) { .grid-2 { grid-template-columns: 1fr; } }

/* ---- table ---- */
.tbl-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); }
th { font-size: .74rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-3); font-weight: 600; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.win-ai { color: var(--good); font-weight: 700; }
.win-rules { color: var(--warn); font-weight: 700; }
.win-tie { color: var(--ink-3); font-weight: 700; }

.pill {
  display: inline-block; font-size: .72rem; font-weight: 600;
  padding: 2px 8px; border-radius: 999px; background: var(--surface-2); color: var(--ink-2);
}

/* scorecard */
.score-big { font-size: 3rem; font-weight: 800; letter-spacing: -.04em; color: var(--accent); line-height: 1; }
.meter { height: 10px; border-radius: 999px; background: var(--surface-2); overflow: hidden; margin: 10px 0; }
.meter > span { display: block; height: 100%; background: var(--accent); }

/* ---- path simulator ---- */
.sim-controls label {
  display: flex; align-items: center; gap: 12px; padding: 11px 14px;
  border: 1px solid var(--line); border-radius: 10px; margin-bottom: 8px;
  background: var(--surface); cursor: pointer;
}
.sim-controls input { width: 18px; height: 18px; accent-color: var(--accent); }
.sim-controls .amt { margin-left: auto; font-weight: 700; font-variant-numeric: tabular-nums; }
.sim-controls .sub { font-size: .8rem; color: var(--ink-3); }
.sim-out { text-align: center; padding: 8px 0; }
.sim-out .months { font-size: 3.4rem; font-weight: 800; color: var(--accent); letter-spacing: -.04em; line-height: 1; }
.sim-out .save { font-size: 1.1rem; font-weight: 700; }

/* ---- recommendation ---- */
.rec-item { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.rec-num {
  flex: 0 0 30px; height: 30px; border-radius: 999px; background: var(--accent); color: #fff;
  display: grid; place-items: center; font-weight: 700; font-size: .9rem;
}
.rec-item h3 { margin-bottom: 2px; }
.rec-save { margin-left: auto; font-weight: 700; color: var(--good); white-space: nowrap; }

/* ---- bars ---- */
.bar-row { display: grid; grid-template-columns: 130px 1fr 74px; align-items: center; gap: 10px; margin: 5px 0; font-size: .86rem; }
.bar-track { background: var(--surface-2); border-radius: 6px; height: 18px; overflow: hidden; }
.bar-fill { height: 100%; background: var(--accent); opacity: .85; }
.bar-row .v { text-align: right; font-variant-numeric: tabular-nums; color: var(--ink-2); }
.bar-row.is-waste .bar-fill { background: var(--warn); }

footer { padding: 40px 0 64px; color: var(--ink-3); font-size: .86rem; }
footer .wrap > * { max-width: 760px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }

.note { font-size: .82rem; color: var(--ink-3); }
.mono { font-variant-numeric: tabular-nums; }

/* ---- heatmap (daily spend calendar) ---- */
.heatmap { display: grid; grid-template-columns: repeat(7, 1fr); gap: 5px; max-width: 440px; }
.hm-dow { font-size: .66rem; color: var(--ink-3); text-align: center; padding-bottom: 2px; }
.hm-cell { aspect-ratio: 1 / 1; border-radius: 6px; background: var(--surface-2); display: grid; place-items: center; position: relative; }
.hm-cell.empty { background: transparent; }
.hm-cell .dnum { position: absolute; top: 3px; left: 5px; font-size: .56rem; color: var(--ink-3); opacity: .85; }
.hm-cell .damt { font-size: .58rem; font-weight: 600; }
.hm-legend { display: flex; align-items: center; gap: 7px; margin-top: 12px; font-size: .72rem; color: var(--ink-3); }
.hm-legend .ramp { display: flex; gap: 3px; }
.hm-legend .sw { width: 15px; height: 15px; border-radius: 3px; }

/* svg figures scale to their container */
#waterfall svg, #sim-projection svg,
#diagram-crosscheck svg, #diagram-wastetree svg, #diagram-architecture svg {
  width: 100%; height: auto; display: block;
}
.fig-note { font-size: .74rem; color: var(--ink-3); margin-top: 8px; }