@import url('https://fonts.googleapis.com/css2?family=Big+Shoulders+Display:wght@600;700;800&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  --paper: #eaeeec;
  --surface: #ffffff;
  --surface-mono: #e4e9e6;
  --ink: #1a1f1d;
  --ink-soft: #5b655f;
  --ink-faint: #8b948e;
  --accent: #96650c;
  --accent-soft: #c99a46;
  --accent-bg: #f2e6cd;
  --rule: #d3d9d5;
  --good: #2f6b45;
  --good-bg: #dce9e0;
  --warn: #96650c;
  --warn-bg: #f2e6cd;
  --bad: #a13b2d;
  --bad-bg: #f3ddd7;
  --shadow: 0 1px 2px rgba(26, 31, 29, 0.08);
  --radius: 6px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #14181a;
    --surface: #1b2023;
    --surface-mono: #20262a;
    --ink: #edefec;
    --ink-soft: #a9b2ac;
    --ink-faint: #74807a;
    --accent: #d3a03a;
    --accent-soft: #e4bc66;
    --accent-bg: #382c14;
    --rule: #2b3236;
    --good: #7fc396;
    --good-bg: #1c2c22;
    --warn: #d3a03a;
    --warn-bg: #382c14;
    --bad: #e08b7a;
    --bad-bg: #362019;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
  }
}
:root[data-theme="dark"] {
  --paper: #14181a;
  --surface: #1b2023;
  --surface-mono: #20262a;
  --ink: #edefec;
  --ink-soft: #a9b2ac;
  --ink-faint: #74807a;
  --accent: #d3a03a;
  --accent-soft: #e4bc66;
  --accent-bg: #382c14;
  --rule: #2b3236;
  --good: #7fc396;
  --good-bg: #1c2c22;
  --warn: #d3a03a;
  --warn-bg: #382c14;
  --bad: #e08b7a;
  --bad-bg: #362019;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; }
html { text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'IBM Plex Sans', -apple-system, Segoe UI, sans-serif;
  font-size: 15.5px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: 'Big Shoulders Display', sans-serif;
  font-weight: 800;
  letter-spacing: 0.01em;
  margin: 0;
  text-wrap: balance;
}

a { color: var(--accent); }
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
.mono, .num { font-family: 'IBM Plex Mono', monospace; font-variant-numeric: tabular-nums; }

/* ---------- Auth page ---------- */
.auth-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.auth-card {
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow);
}
.auth-card .wordmark {
  font-size: 30px;
  line-height: 0.95;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.auth-card .wordmark span { color: var(--accent); }
.auth-sub {
  color: var(--ink-soft);
  font-size: 14px;
  margin-bottom: 26px;
}
.auth-toggle {
  margin-top: 18px;
  text-align: center;
  font-size: 13.5px;
  color: var(--ink-soft);
}
.auth-toggle button {
  background: none;
  border: none;
  color: var(--accent);
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
}

/* ---------- Form fields ---------- */
.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 6px;
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--surface);
  color: var(--ink);
}
/* Chrome/Safari force their own text/background color on autofill-eligible fields (assuming a
   light page), ignoring the `color` rule above entirely - this is what actually washes out typed
   text on a dark background. The inset box-shadow trick is the standard fix: it repaints the
   autofill background as a "shadow" the size of the field before the browser's own background
   can show, and -webkit-text-fill-color is the one property autofill actually respects. */
.field input:-webkit-autofill,
.field input:-webkit-autofill:hover,
.field input:-webkit-autofill:focus,
.field textarea:-webkit-autofill,
.field select:-webkit-autofill {
  -webkit-text-fill-color: var(--ink);
  -webkit-box-shadow: 0 0 0 1000px var(--surface) inset;
  box-shadow: 0 0 0 1000px var(--surface) inset;
  caret-color: var(--ink);
  transition: background-color 9999s ease-in-out 0s, color 9999s ease-in-out 0s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 2px solid var(--accent-soft);
  outline-offset: 1px;
  border-color: var(--accent);
}
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }

button.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 4px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  background: var(--ink);
  color: var(--paper);
}
button.btn:hover { opacity: 0.9; }
button.btn.full { width: 100%; }
button.btn.secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--rule);
}
button.btn.accent { background: var(--accent); color: #fff; }
button.btn.ghost {
  background: transparent;
  color: var(--ink-soft);
  border: none;
  padding: 6px 10px;
  font-size: 13px;
}
button.btn.danger { background: var(--bad); color: #fff; }
button.btn:disabled { opacity: 0.5; cursor: default; }

.error-msg {
  background: var(--bad-bg);
  color: var(--bad);
  border-radius: 4px;
  padding: 9px 12px;
  font-size: 13.5px;
  margin-bottom: 16px;
}
.status-msg { font-size: 13.5px; color: var(--ink-soft); margin-top: 10px; }
.status-msg.error { color: var(--bad); }
.status-msg.ok { color: var(--good); }

/* ---------- App shell ---------- */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  border-bottom: 1px solid var(--rule);
  background: var(--surface);
}
.app-header .wordmark {
  font-size: 22px;
  text-transform: uppercase;
  letter-spacing: 0.01em;
}
.app-header .wordmark span { color: var(--accent); }
.header-right { display: flex; align-items: center; gap: 14px; }
.header-right .who { font-size: 13.5px; color: var(--ink-soft); }

nav.tabs {
  display: flex;
  gap: 2px;
  padding: 0 28px;
  background: var(--surface);
  border-bottom: 1px solid var(--rule);
  overflow-x: auto;
}
nav.tabs button {
  background: none;
  border: none;
  padding: 12px 16px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 600;
  font-size: 13.5px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--ink-faint);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
nav.tabs button.active {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

main.content {
  max-width: 920px;
  margin: 0 auto;
  padding: 28px;
}
.panel { display: none; }
.panel.active { display: block; }

.card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 20px 22px;
  box-shadow: var(--shadow);
  margin-bottom: 18px;
}
.card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}
.card-head h2 { font-size: 18px; text-transform: uppercase; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }

/* Dashboard stat blocks */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }
.stat {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
}
.stat .label {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 8px;
}
.stat .value {
  font-family: 'Big Shoulders Display', sans-serif;
  font-weight: 800;
  font-size: 34px;
  line-height: 1;
  color: var(--ink);
}
.stat .value small { font-size: 16px; font-weight: 600; color: var(--ink-soft); }
.stat .delta { font-size: 12.5px; margin-top: 6px; font-family: 'IBM Plex Mono', monospace; }
.stat .delta.good { color: var(--good); }
.stat .delta.bad { color: var(--bad); }
.stat .delta.neutral { color: var(--ink-faint); }

.macro-bar { height: 8px; border-radius: 4px; background: var(--surface-mono); overflow: hidden; margin-top: 8px; }
.macro-bar .fill { height: 100%; background: var(--accent); border-radius: 4px; }
.macro-bar .fill.over { background: var(--bad); }

/* Tables / lists */
table.data { width: 100%; border-collapse: collapse; font-size: 14px; }
table.data th {
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding: 6px 10px;
  border-bottom: 1px solid var(--rule);
}
table.data td { padding: 9px 10px; border-bottom: 1px solid var(--rule); vertical-align: middle; }
table.data tr:last-child td { border-bottom: none; }
.list-empty { color: var(--ink-faint); font-size: 14px; padding: 18px 0; text-align: center; }

.pill {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 3px;
  background: var(--surface-mono);
  color: var(--ink-soft);
}
.pill.breakfast { background: var(--accent-bg); color: var(--accent); }
.pill.lunch { background: var(--good-bg); color: var(--good); }
.pill.dinner { background: var(--bad-bg); color: var(--bad); }
.pill.snack { background: var(--surface-mono); color: var(--ink-soft); }
.pill.done { background: var(--good-bg); color: var(--good); }
.pill.active { background: var(--warn-bg); color: var(--warn); }

.icon-btn {
  background: none;
  border: none;
  color: var(--ink-faint);
  cursor: pointer;
  padding: 4px 6px;
  font-size: 13px;
}
.icon-btn:hover { color: var(--bad); }

.chart-wrap {
  position: relative;
  height: 220px;
  margin-top: 6px;
}

.exercise-row {
  display: grid;
  grid-template-columns: 1fr 32px;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}
.exercise-row input { width: 100%; }
.exercise-row-head {
  display: grid;
  grid-template-columns: 1fr 32px;
  gap: 8px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 6px;
}

.set-row {
  display: grid;
  grid-template-columns: 28px 1fr 70px 70px 28px;
  gap: 10px;
  align-items: center;
  padding: 7px 0;
  border-bottom: 1px solid var(--rule);
  font-size: 14px;
}
.set-row:last-child { border-bottom: none; }
.set-row .set-n { color: var(--ink-faint); font-family: 'IBM Plex Mono', monospace; }

.hint { font-size: 12.5px; color: var(--ink-faint); margin-top: 4px; }

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--ink-faint);
}
.empty-state h3 { color: var(--ink-soft); font-size: 18px; margin-bottom: 6px; }

@media (max-width: 640px) {
  .app-header { padding: 12px 16px; }
  main.content { padding: 16px; }
  nav.tabs { padding: 0 16px; }
  .row-2, .row-3 { grid-template-columns: 1fr; }
}