/* Reconcile design system - Sophia Ize-Iyamu portfolio persona.
   Champagne gold on near-black (dark, the signature look) or warm cream (light),
   with Source Serif 4 for display, Inter for text, and JetBrains Mono for
   figures. Extended with amber / green / rose semantics for the three waste
   tiers. System-font fallbacks keep the page readable if the fonts do not load. */

:root {
  color-scheme: light dark;
  /* light theme: warm cream + deep gold */
  --bg: #fbfaf6;
  --surface: #ffffff;
  --surface-2: #f3f0e8;
  --sidebar-bg: #f6f3eb;
  --ink: #1a1a1c;
  --ink-2: #46464c;
  --ink-3: #85857e;
  --line: #e6e1d5;
  --accent: #9c7e45;       /* deep gold: text, links, active */
  --accent-2: #c9a85e;     /* mid gold: fills */
  --on-accent: #ffffff;    /* text and icons on an accent fill */
  --warn: #b06a1e;
  --warn-bg: #f6ead6;
  --good: #3e8f52;
  --good-bg: #e7f1e7;
  --flag: #a83a54;
  --flag-bg: #f7e6ea;
  --shadow: 0 1px 2px rgba(30, 24, 12, .05), 0 8px 22px rgba(30, 24, 12, .08);
  --serif: "Source Serif 4", "Source Serif Pro", Charter, Cambria, Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  --radius: 15px;
  --side-w: 210px;
}

/* dark: the portfolio's signature champagne-gold on near-black */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0a0a0d;
    --surface: #0a0a0d;
    --surface-2: #15151b;
    --sidebar-bg: #0c0c11;
    --ink: #f4f4f5;
    --ink-2: #d4d4d8;
    --ink-3: #8a8a92;
    --line: #34343c;
    --accent: #d4b26b;
    --accent-2: #e7ce93;
    --on-accent: #0a0a0d;
    --warn: #e0a44a;
    --warn-bg: #2a2113;
    --good: #6bbe86;
    --good-bg: #14241a;
    --flag: #d97389;
    --flag-bg: #2a141b;
    --shadow: 0 1px 2px rgba(0,0,0,.45), 0 12px 30px rgba(0,0,0,.55);
  }
}
/* explicit dark via the toggle, wins over the system setting */
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0a0a0d;
  --surface: #0a0a0d;
  --surface-2: #15151b;
  --sidebar-bg: #0c0c11;
  --ink: #f4f4f5;
  --ink-2: #d4d4d8;
  --ink-3: #8a8a92;
  --line: #34343c;
  --accent: #d4b26b;
  --accent-2: #e7ce93;
  --on-accent: #0a0a0d;
  --warn: #e0a44a;
  --warn-bg: #2a2113;
  --good: #6bbe86;
  --good-bg: #14241a;
  --flag: #d97389;
  --flag-bg: #2a141b;
  --shadow: 0 1px 2px rgba(0,0,0,.45), 0 12px 30px rgba(0,0,0,.55);
}
:root[data-theme="light"] { color-scheme: light; }

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 26px; }

h1, h2, h3 { font-family: var(--serif); line-height: 1.16; letter-spacing: -0.01em; margin: 0; color: var(--ink); }
h2 { font-size: 1.5rem; margin-bottom: 6px; }
h3 { font-size: 1.05rem; }
.big, .score-big, .months, .side-title { font-family: var(--serif); }
.mono { font-family: var(--mono); }
p { margin: 8px 0; color: var(--ink-2); }
a { color: var(--accent); }

.eyebrow {
  font-size: .74rem; text-transform: uppercase; letter-spacing: .12em;
  color: var(--accent); font-weight: 700;
}

/* ---- sidebar ---- */
.sidebar {
  position: fixed; top: 0; left: 0; width: var(--side-w); height: 100vh;
  background: var(--sidebar-bg); color: var(--ink-2); border-right: 1px solid var(--line);
  display: flex; flex-direction: column; padding: 24px 16px; z-index: 40;
  transform: translateX(-100%); transition: transform .26s ease;
}
body.nav-open .sidebar { transform: none; }
.side-brand { display: flex; align-items: flex-start; gap: 8px; margin-bottom: 24px; }
.side-title { font-weight: 800; font-size: 1.05rem; line-height: 1.15; letter-spacing: -.01em; color: var(--ink); }
.side-title em { font-style: normal; font-weight: 600; color: var(--accent); }
.side-collapse {
  margin-left: auto; background: transparent; border: none; color: var(--ink-3);
  font-size: 1rem; line-height: 1; cursor: pointer; padding: 2px 4px;
}
.side-collapse:hover { color: var(--ink); }
.side-nav { display: flex; flex-direction: column; gap: 2px; }
.side-nav a {
  color: var(--ink-2); text-decoration: none; font-size: .92rem;
  padding: 9px 12px; border-radius: 8px; border-left: 3px solid transparent;
  transition: background .15s, color .15s;
}
.side-nav a:hover { background: var(--surface-2); color: var(--ink); }
.side-nav a.active { background: var(--good-bg); color: var(--accent); font-weight: 700; border-left-color: var(--accent-2); }
.side-foot { margin-top: auto; }
/* toggle: a chip that contrasts the page and previews the mode it switches to -
   a dark chip in light mode, a light chip in dark mode - in the gold persona. */
.theme-toggle {
  width: 100%; border: 1px solid transparent; font: inherit; font-size: .85rem; font-weight: 700;
  padding: 9px 12px; border-radius: 9px; cursor: pointer; display: flex; align-items: center; gap: 8px;
  background: #0a0a0d; color: #f6f3eb;
  transition: filter .15s;
}
.theme-toggle:hover { filter: brightness(1.25); }
.tt-icon { font-size: 1rem; color: #d4b26b; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle { background: #f6f3eb; color: #1a1a1c; }
  :root:not([data-theme="light"]) .tt-icon { color: #9c7e45; }
}
:root[data-theme="dark"] .theme-toggle { background: #f6f3eb; color: #1a1a1c; }
:root[data-theme="dark"] .tt-icon { color: #9c7e45; }
.side-note { color: var(--ink-3); font-size: .82rem; margin: 12px 0 0; }
.side-repo { display: inline-flex; align-items: center; gap: 7px; margin-top: 14px; font-size: .82rem; font-weight: 600; color: var(--ink-2); text-decoration: none; }
.side-repo:hover { color: var(--accent); }
.side-repo svg { flex: 0 0 auto; }

.side-open {
  position: fixed; top: 14px; left: 14px; z-index: 50;
  width: 42px; height: 42px; border-radius: 11px; border: 1px solid var(--line);
  background: var(--surface); color: var(--accent); font-size: 1.2rem; cursor: pointer;
  box-shadow: var(--shadow); display: grid; place-items: center;
}
.scrim { display: none; }

.content { transition: margin-left .26s ease; }
body.nav-open .side-open { display: none; }
/* when the sidebar is collapsed, clear the floating menu button */
body:not(.nav-open) .content { padding-top: 56px; }
@media (min-width: 900px) { body.nav-open .content { margin-left: var(--side-w); } }
@media (max-width: 899px) {
  body.nav-open .scrim { display: block; position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 35; }
}

/* ---- hero: full-width headline, then a row of stat tiles, then the chart ---- */
.hero { padding: 46px 0 38px; border-bottom: 1px solid var(--line); }
.hero h1 { font-size: clamp(1.9rem, 1.35rem + 2.2vw, 2.7rem); line-height: 1.1; margin: 12px 0 14px; letter-spacing: -.02em; }
.hero .lede { font-size: 1.05rem; color: var(--ink-2); max-width: 78ch; }
.hero-figure { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px 12px; box-shadow: var(--shadow); margin-top: 24px; }

/* ---- stat band (below the hero) ---- */
.stat-band { padding: 22px 0; }
.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: 13px; padding: 13px 16px; box-shadow: var(--shadow); }
.stat .k { font-size: 1.45rem; font-weight: 800; letter-spacing: -.03em; color: var(--accent); }
.stat .l { font-size: .82rem; color: var(--ink-3); }
.stat.warn .k { color: var(--warn); }
.stat.flag .k { color: var(--flag); }
.stat.good .k { color: var(--good); }

/* ---- section frame ---- */
section { padding: 34px 0; }
.content > section + section { border-top: 1px solid var(--line); }
.section-head { max-width: 660px; margin-bottom: 20px; }
.section-head h2 { margin-top: 6px; }

/* ---- verdict ---- */
.verdict { background: var(--surface); border: 1px solid var(--line); border-left: 5px solid var(--accent-2); border-radius: var(--radius); padding: 24px 28px; box-shadow: var(--shadow); }
.verdict .big { font-size: 1.9rem; font-weight: 800; letter-spacing: -.03em; color: var(--accent); margin: 4px 0; }

/* ---- cards ---- */
.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; } }

/* ---- tiers ---- */
.tier { margin-bottom: 16px; }
.tier-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 10px; }
.tier-tag { font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; padding: 3px 10px; 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: 800; font-size: 1.05rem; }

.flag-card { background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--line); border-radius: 12px; padding: 13px 16px; margin-bottom: 8px; box-shadow: var(--shadow); }
.tier-1 .flag-card { border-left-color: var(--flag); }
.tier-2 .flag-card { border-left-color: var(--warn); }
.tier-3 .flag-card { border-left-color: var(--accent-2); }
.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: 800; white-space: nowrap; }
.flag-reason { color: var(--ink-2); font-size: .92rem; margin: 10px 0 4px; }
.badge { font-size: .74rem; 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: .9rem; 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; }

/* ---- 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: 700; }
.win-ai { color: var(--good); font-weight: 800; }
.win-rules { color: var(--warn); font-weight: 800; }
.win-tie { color: var(--ink-3); font-weight: 800; }
.pill { display: inline-block; font-size: .74rem; 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: linear-gradient(90deg, var(--accent), var(--accent-2)); }

/* category bars (HTML, so text stays body-size at any width) */
.catbar-row { display: grid; grid-template-columns: 142px 1fr 66px; align-items: center; gap: 12px; margin: 7px 0; }
.catbar-label { text-align: right; color: var(--ink-2); font-size: .95rem; }
.catbar-track { background: var(--surface-2); border-radius: 6px; height: 20px; overflow: hidden; }
.catbar-fill { height: 100%; border-radius: 6px; min-width: 3px; }
.catbar-val { text-align: right; font-weight: 700; color: var(--ink); font-size: .95rem; font-variant-numeric: tabular-nums; }
@media (max-width: 520px) { .catbar-row { grid-template-columns: 96px 1fr 54px; gap: 8px; } .catbar-label, .catbar-val { font-size: .82rem; } }

/* ---- path simulator ---- */
.sim-controls label { display: flex; align-items: center; gap: 12px; padding: 11px 14px; border: 1px solid var(--line); border-radius: 11px; margin-bottom: 8px; background: var(--surface); cursor: pointer; transition: border-color .15s; }
.sim-controls label:hover { border-color: var(--accent-2); }
.sim-controls input { width: 18px; height: 18px; accent-color: var(--accent); }
.sim-controls .amt { margin-left: auto; font-weight: 800; font-variant-numeric: tabular-nums; }
.sim-controls .sub { font-size: .82rem; color: var(--ink-3); }
.sim-out { text-align: center; }
.sim-out .months { font-size: 3.2rem; font-weight: 800; color: var(--accent); letter-spacing: -.04em; line-height: 1; }
.sim-out .save { font-size: 1.05rem; font-weight: 800; }

/* ---- recommendation ---- */
.rec-item { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.rec-item:last-child { border-bottom: none; }
.rec-num { flex: 0 0 30px; height: 30px; border-radius: 999px; background: linear-gradient(135deg, var(--accent-2), var(--accent)); color: var(--on-accent); display: grid; place-items: center; font-weight: 800; font-size: .9rem; }
.rec-item h3 { margin-bottom: 2px; }
.rec-save { margin-left: auto; font-weight: 800; color: var(--good); white-space: nowrap; }

footer { padding: 34px 0 60px; color: var(--ink-3); font-size: .9rem; border-top: 1px solid var(--line); }
footer .wrap > * { max-width: 760px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }

.note { font-size: .9rem; color: var(--ink-3); }
.mono { font-variant-numeric: tabular-nums; }

/* ---- citations and references ---- */
.cite { font-size: .7em; font-weight: 800; vertical-align: super; line-height: 0; white-space: nowrap; }
.cite::before { content: "["; color: var(--accent); }
.cite::after { content: "]"; color: var(--accent); }
.cite a { color: var(--accent); text-decoration: none; }
.cite a:hover { text-decoration: underline; }
.refs { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); overflow: hidden; }
.refs summary { cursor: pointer; font-weight: 700; color: var(--ink); font-size: 1rem; list-style: none; display: flex; align-items: center; gap: 10px; padding: 15px 20px; background: var(--surface-2); transition: background .15s, color .15s; }
.refs summary:hover { color: var(--accent); background: var(--good-bg); }
.refs summary::-webkit-details-marker { display: none; }
.refs summary::before { content: "\25B8"; color: var(--accent); font-size: .9em; transition: transform .18s ease; }
.refs[open] summary::before { transform: rotate(90deg); }
.refs-count { margin-left: auto; font-weight: 600; font-size: .82rem; color: var(--accent); background: var(--good-bg); border: 1px solid var(--line); border-radius: 999px; padding: 3px 11px; }
.refs[open] .refs-count { background: var(--surface); }
.ref-list { margin: 0; padding: 16px 24px 6px; }
.ref-list li { font-size: .9rem; color: var(--ink-2); margin-bottom: 8px; }
.ref-list li a { color: var(--accent); }
.ref-list li:target { background: var(--good-bg); border-radius: 6px; padding: 2px 6px; margin-left: -6px; }
.refs .note { padding: 0 24px 16px; margin: 0; }

/* ---- heatmap ---- */
.heatmap { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; }
.hm-dow { font-size: .88rem; color: var(--ink-2); text-align: center; padding-bottom: 4px; font-weight: 600; }
.hm-cell { aspect-ratio: 1 / 1; border-radius: 10px; background: var(--surface-2); display: grid; place-items: center; position: relative; }
.hm-cell.empty { background: transparent; }
.hm-cell .dnum { position: absolute; top: 6px; left: 9px; font-size: .82rem; color: var(--ink-2); opacity: 1; }
.hm-cell .damt { font-size: 1rem; font-weight: 700; }
.hm-legend { display: flex; align-items: center; gap: 8px; margin-top: 14px; font-size: .88rem; color: var(--ink-3); }
.hm-legend .ramp { display: flex; gap: 3px; }
.hm-legend .sw { width: 18px; height: 18px; border-radius: 3px; }
.hm-insights { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 14px; }
.hm-insights ul { margin: 8px 0 0; padding-left: 18px; }
.hm-insights li { font-size: .9rem; color: var(--ink-2); margin-bottom: 7px; }
.hm-insights strong { color: var(--ink); }

/* ---- ask the data ---- */
.ask-form { display: flex; gap: 10px; }
.ask-form input { flex: 1; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--ink); font: inherit; font-size: 1rem; }
.ask-form input:focus { outline: none; border-color: var(--accent-2); box-shadow: 0 0 0 3px var(--good-bg); }
.ask-form button { padding: 12px 22px; border: none; border-radius: 10px; background: var(--accent); color: var(--on-accent); font: inherit; font-weight: 700; cursor: pointer; white-space: nowrap; }
.ask-form button:hover { filter: brightness(1.05); }
.ask-form button:disabled { opacity: .6; cursor: default; }
.ask-examples { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.ask-examples button { border: 1px solid var(--line); background: var(--surface-2); color: var(--ink-2); font: inherit; font-size: .9rem; padding: 7px 13px; border-radius: 999px; cursor: pointer; }
.ask-examples button:hover { border-color: var(--accent-2); color: var(--ink); }
.ask-answer { margin-top: 14px; padding: 14px 16px; border-radius: 10px; background: var(--good-bg); border-left: 3px solid var(--accent-2); color: var(--ink); font-size: .95rem; white-space: pre-wrap; }
.ask-answer.err { background: var(--warn-bg); border-left-color: var(--warn); color: var(--ink-2); }
@media (max-width: 560px) { .ask-form { flex-direction: column; } }

/* floating assistant launcher + panel */
.ask-fab {
  position: fixed; right: 24px; bottom: 24px; z-index: 60;
  width: 72px; height: 72px; border-radius: 50%; border: none;
  background: var(--accent); color: var(--on-accent); cursor: pointer;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .28); display: grid; place-items: center;
  transition: transform .15s, filter .15s;
}
.ask-fab:hover { filter: brightness(1.07); transform: translateY(-2px); }
.ask-fab:focus-visible { outline: 3px solid var(--accent-2); outline-offset: 2px; }
.ask-fab-tip {
  position: absolute; right: 84px; top: 50%; transform: translateY(-50%);
  white-space: nowrap; background: var(--ink); color: var(--bg);
  font-size: .82rem; font-weight: 600; padding: 6px 11px; border-radius: 8px;
  opacity: 0; pointer-events: none; transition: opacity .15s; box-shadow: var(--shadow);
}
.ask-fab:hover .ask-fab-tip, .ask-fab:focus-visible .ask-fab-tip { opacity: 1; }
.ask-panel {
  position: fixed; right: 24px; bottom: 108px; z-index: 61;
  width: 400px; max-width: calc(100vw - 32px);
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, .30); overflow: hidden;
}
.ask-panel-head { display: flex; align-items: center; justify-content: space-between; padding: 13px 16px; background: var(--accent); color: var(--on-accent); }
.ask-panel-head strong { font-size: 1rem; }
.ask-panel-close { background: transparent; border: none; color: var(--on-accent); font-size: 1.5rem; line-height: 1; cursor: pointer; padding: 0 4px; }
.ask-panel-body { padding: 14px 16px 16px; max-height: 66vh; overflow-y: auto; }
.ask-panel-body .ask-answer { max-height: 240px; overflow-y: auto; margin: 12px 0; }
@media (max-width: 480px) { .ask-fab { right: 16px; bottom: 16px; } .ask-panel { right: 16px; bottom: 100px; } }

/* svg figures scale to their container */
#waterfall svg, #cat-bars svg, #sim-projection svg,
#diagram-crosscheck svg, #diagram-wastetree svg, #diagram-architecture svg {
  width: 100%; height: auto; display: block;
}

/* buttons (upload controls) */
.btn { display: inline-flex; align-items: center; gap: 8px; font: inherit; font-weight: 700; font-size: .9rem; line-height: 1; padding: 11px 16px; border-radius: 10px; border: 1px solid var(--line); cursor: pointer; text-decoration: none; transition: background .15s, border-color .15s, color .15s; }
.btn--primary { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.btn--primary:hover { background: var(--accent-2); border-color: var(--accent-2); color: var(--ink); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--surface-2); border-color: var(--ink-3); }

/* worked-example / your-statement section sits below the project hero + upload */
.sample-hero { border-top: 1px solid var(--line); }

/* upload panel */
.upload-card { background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; display: grid; gap: 14px; }
@media (min-width: 760px) { .upload-card { grid-template-columns: 1fr auto; align-items: center; } .upload-status { grid-column: 1 / -1; } }
.upload-main strong { font-size: 1.05rem; display: block; margin-bottom: 4px; color: var(--ink); }
.upload-main .note { margin: 0; }
.upload-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.upload-file { position: relative; overflow: hidden; }
.upload-status { font-size: .88rem; color: var(--ink-2); }
.upload-status.ok { color: var(--accent); font-weight: 600; }
.upload-status.err { color: var(--flag); font-weight: 600; }
.goal-field { display: inline-flex; align-items: center; gap: 4px; font-weight: 600; color: var(--ink-2); }
.goal-field input { width: 96px; font: inherit; padding: 6px 9px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); color: var(--ink); }
.goal-field input:focus { outline: none; border-color: var(--accent-2); box-shadow: 0 0 0 3px var(--good-bg); }