/* Febra — clean, calm, adult. */

:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --ink: #1c2430;
  --ink-soft: #5b6674;
  --ink-faint: #8d97a5;
  --accent: #0f766e;        /* calm teal */
  --accent-ink: #ffffff;
  --accent-soft: #e6f2f1;
  --warn-bg: #fff7e6;
  --warn-border: #f0d9a8;
  --warn-ink: #7a5b16;
  --danger: #b3423a;
  --warm: #b06a12;
  --line: #e3e7ec;
  --input-bg: #fbfcfd;
  --input-focus-bg: #ffffff;
  --btn-primary-hover: #0b5f58;
  --chip-hover: #d8ebe9;
  --del-hover-bg: #fdf1f0;
  --summary-bg: #f3f5f7;
  --urgent-bg: #fdecea;
  --urgent-border: #f2b8b1;
  --urgent-ink: #8f2f27;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 4px 16px rgba(16, 24, 40, .06);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

/* the hidden attribute must always win, even over display:flex components */
[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
}

main { max-width: 860px; margin: 0 auto; padding: 0 20px 48px; }

code { background: var(--accent-soft); padding: 1px 6px; border-radius: 6px; font-size: .9em; }

/* ---------------- top bar ---------------- */

.topbar {
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: 860px;
  margin: 0 auto;
  padding: 18px 20px 10px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -.01em;
}

.tagline { color: var(--ink-faint); font-size: .85rem; }

.topbar-controls {
  margin-left: auto;
  display: flex;
  gap: 8px;
}

/* ---------------- buttons ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 9px 16px;
  font: inherit;
  font-weight: 600;
  font-size: .92rem;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s, border-color .15s, transform .05s;
}
.btn:active { transform: translateY(1px); }

.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--btn-primary-hover); }

.btn-ghost {
  background: var(--surface);
  border-color: var(--line);
  color: var(--ink-soft);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.btn-lg { padding: 13px 26px; font-size: 1.05rem; }

/* ---------------- landing ---------------- */

.hero { text-align: center; padding: 56px 0 36px; }

.hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  letter-spacing: -.02em;
  line-height: 1.2;
  margin: 0 0 16px;
}

.lede {
  max-width: 560px;
  margin: 0 auto 28px;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.recent {
  margin-top: 22px;
  font-size: .9rem;
  color: var(--ink-soft);
}
.recent a { color: var(--accent); font-weight: 600; word-break: break-all; }
.recent ul {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.recent-exp { color: var(--ink-faint); font-size: .8rem; margin-left: 8px; }

.how {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 24px 0 40px;
}

.how-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}
.how-card h3 { margin: 12px 0 6px; font-size: 1rem; }
.how-card p { margin: 0; color: var(--ink-soft); font-size: .9rem; }

.how-num {
  width: 30px; height: 30px;
  display: grid; place-items: center;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
  border-radius: 50%;
}

.fineprint { text-align: center; color: var(--ink-soft); font-size: .9rem; }
.fineprint p { margin: 6px 0; }
.disclaimer { color: var(--ink-faint); font-size: .8rem; margin-top: 14px !important; }

/* ---------------- tracker ---------------- */

.banner {
  display: flex;
  align-items: center;
  gap: 9px;
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  color: var(--warn-ink);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: .88rem;
  margin: 14px 0;
}

.tracker-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 16px 0 12px;
}

.name-display {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -.01em;
  cursor: pointer;
  border-radius: 8px;
  padding: 2px 8px;
  margin-left: -8px;
}
.name-display:hover { background: var(--accent-soft); }
.name-display.placeholder {
  color: var(--ink-faint);
  font-weight: 500;
  font-size: .95rem;
}

.name-input {
  font: inherit;
  font-size: 1.15rem;
  font-weight: 600;
  padding: 5px 10px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: var(--input-bg);
  color: var(--ink);
  flex: 1;
  max-width: 460px;
  min-width: 0;
}
.name-input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

.tracker-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.banner.urgent {
  background: var(--urgent-bg);
  border-color: var(--urgent-border);
  color: var(--urgent-ink);
  font-weight: 600;
}

.a2hs {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: .88rem;
  margin-bottom: 18px;
}
.a2hs button {
  margin-left: auto;
  border: none;
  background: none;
  color: inherit;
  cursor: pointer;
  font-size: 1rem;
  padding: 0 4px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
}

.entry-form h2, .log h2 { margin: 0 0 14px; font-size: 1.05rem; letter-spacing: -.01em; }

.form-grid {
  display: grid;
  grid-template-columns: 1.25fr 1.1fr 0.85fr 1.3fr;
  gap: 14px;
}

.field { display: flex; flex-direction: column; gap: 5px; }
.field > span, .field-label-row {
  font-size: .8rem;
  font-weight: 600;
  color: var(--ink-soft);
  white-space: nowrap;
  /* uniform label height so the unit toggle doesn't push its input lower */
  display: flex;
  align-items: center;
  gap: 4px;
  min-height: 22px;
}

.field-label-row { justify-content: space-between; gap: 8px; }

.unit-toggle {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 7px;
  overflow: hidden;
}
.unit-toggle button {
  border: none;
  background: var(--surface);
  color: var(--ink-faint);
  font: inherit;
  font-size: .72rem;
  font-weight: 700;
  line-height: 1;
  padding: 3px 8px;
  cursor: pointer;
}
.unit-toggle button.on {
  background: var(--accent);
  color: var(--accent-ink);
}
.unit-toggle button svg { display: block; }

.quick-meds {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}
.quick-label { font-size: .8rem; font-weight: 600; color: var(--ink-soft); }
.quick-chip {
  border: 1px solid var(--line);
  background: var(--accent-soft);
  color: var(--accent);
  font: inherit;
  font-size: .82rem;
  font-weight: 600;
  border-radius: 999px;
  padding: 4px 12px;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.quick-chip:hover { border-color: var(--accent); background: var(--chip-hover); }
.field em { font-weight: 400; color: var(--ink-faint); font-style: normal; }
.field-wide { grid-column: 1 / -1; }

.field input {
  font: inherit;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--input-bg);
  color: var(--ink);
  min-width: 0;
  width: 100%;
}
.field input:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
  background: var(--input-focus-bg);
}

/* datalist inputs draw a dropdown arrow that doesn't open a real picker on
   mobile — hide it; suggestions still appear while typing, and the Quick
   fill chips cover one-tap re-selection (rules kept separate: an unknown
   pseudo-element would invalidate a combined selector list) */
#f-med::-webkit-calendar-picker-indicator,
#f-dose::-webkit-calendar-picker-indicator { display: none !important; }
#f-med::-webkit-list-button { display: none; }
#f-dose::-webkit-list-button { display: none; }

.form-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
  margin-top: 16px;
}

.form-error { color: var(--danger); font-size: .88rem; margin: 0; }

/* ---------------- temperature chart ---------------- */

.chart-card { margin-top: 28px; padding: 18px 22px 12px; }
.chart-card h2 { margin: 0 0 10px; font-size: 1.05rem; letter-spacing: -.01em; }
.chart-card svg { display: block; width: 100%; height: auto; }

.chart-line { fill: none; stroke: var(--accent); stroke-width: 2; }
.chart-dot { fill: var(--accent); }
.chart-dot.warm { fill: var(--warm); }
.chart-dot.hot { fill: var(--danger); }
.chart-grid { stroke: var(--line); stroke-width: 1; }
.chart-ref { stroke: var(--danger); stroke-dasharray: 4 4; stroke-width: 1; opacity: .8; }
.chart-daysep { stroke: var(--ink-faint); stroke-dasharray: 3 3; stroke-width: 1; opacity: .55; }
.chart-label { fill: var(--ink-faint); font-size: 11px; font-family: var(--font); }
.chart-tick { stroke: var(--ink-faint); stroke-width: 1; }

/* ---------------- log ---------------- */

.log { margin-top: 28px; }
.log-empty { color: var(--ink-faint); margin: 0 0 12px; }

.entry.ghost { opacity: .6; border-style: dashed; }
.ghost-tag {
  margin-left: auto;
  align-self: flex-start;
  font-size: .68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--ink-faint);
}

.log-list { list-style: none; margin: 0; padding: 0; }

.log-day {
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--ink-faint);
  margin: 20px 0 8px;
}

.entry {
  display: flex;
  gap: 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 8px;
}

.entry-time {
  flex: 0 0 52px;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--ink);
}

/* 12h times ("11:54 AM") are wider and vary in length — reserve a fixed
   column so the entry text lines up across rows */
.log-list.t12 .entry-time { flex-basis: 76px; }

.entry-main { flex: 1; min-width: 0; }

.entry-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
}

.entry-temp { font-weight: 700; font-size: 1.05rem; }
.entry-temp.hot { color: var(--danger); }
.entry-temp.warm { color: var(--warm); }

.entry-med { font-weight: 600; color: var(--accent); }
.entry-dose { color: var(--ink-soft); }

.entry-deltas {
  margin-top: 3px;
  font-size: .82rem;
  color: var(--ink-faint);
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
}
.entry-note { margin-top: 3px; font-size: .85rem; color: var(--ink-soft); font-style: italic; }

.entry-del {
  border: none;
  background: none;
  color: var(--ink-faint);
  cursor: pointer;
  font-size: 1rem;
  padding: 0 4px;
  align-self: flex-start;
  border-radius: 6px;
}
.entry-del:hover { color: var(--danger); background: var(--del-hover-bg); }

/* time since last dose highlight */
.since-box {
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: .95rem;
  margin-bottom: 18px;
}
.since-box strong { font-variant-numeric: tabular-nums; }

/* ---------------- gone view ---------------- */

.gone { padding-top: 60px; text-align: center; }
.gone h1 { font-size: 1.4rem; }
.gone p { color: var(--ink-soft); }
.gone .btn { margin-top: 10px; }

/* ---------------- modal ---------------- */

dialog {
  border: none;
  border-radius: var(--radius);
  box-shadow: 0 8px 40px rgba(16, 24, 40, .25);
  padding: 22px;
  width: min(640px, calc(100vw - 40px));
  background: var(--surface);
  color: var(--ink);
}
dialog::backdrop { background: rgba(20, 28, 38, .45); }

.modal-head { display: flex; justify-content: space-between; align-items: center; }
.modal-head h2 { margin: 0; font-size: 1.1rem; }

#summary-text {
  background: var(--summary-bg);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 14px;
  font-size: .82rem;
  line-height: 1.55;
  white-space: pre-wrap;
  max-height: 50vh;
  overflow: auto;
}

.modal-actions { display: flex; gap: 10px; justify-content: flex-end; }

/* ---------------- toast & footer ---------------- */

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--bg);
  padding: 10px 18px;
  border-radius: 10px;
  font-size: .9rem;
  box-shadow: var(--shadow);
  z-index: 50;
}

.footer {
  text-align: center;
  color: var(--ink-faint);
  font-size: .78rem;
  padding: 18px 20px 26px;
}

/* ---------------- responsive ---------------- */

@media (max-width: 720px) {
  .form-grid { grid-template-columns: 1fr 1fr; }
  .tagline { display: none; }
}
@media (max-width: 420px) {
  .form-grid { grid-template-columns: 1fr; }
}

/* ---------------- dark mode ----------------
   Every dark difference is expressed as a variable override, so both
   triggers below only need to swap variables. `[data-theme]` = the user's
   manual choice; when it's absent we fall back to the system preference. */

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) { --dark: 1; }
}
:root[data-theme="dark"] { --dark: 1; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg: #10151b;
    --surface: #1a222b;
    --ink: #e7ecf2;
    --ink-soft: #a6b1be;
    --ink-faint: #75808d;
    --accent: #2fbcab;
    --accent-ink: #06211d;
    --accent-soft: #143430;
    --warn-bg: #2b2410;
    --warn-border: #6a5620;
    --warn-ink: #eacc7b;
    --danger: #f07b72;
    --warm: #e2a352;
    --line: #2b3542;
    --input-bg: #141b22;
    --input-focus-bg: #10161c;
    --btn-primary-hover: #26a293;
    --chip-hover: #1b453f;
    --del-hover-bg: #3a2320;
    --summary-bg: #141b22;
    --urgent-bg: #3a1d19;
    --urgent-border: #7a3830;
    --urgent-ink: #f3a99f;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 4px 16px rgba(0, 0, 0, .35);
  }
}
:root[data-theme="dark"] {
  --bg: #10151b;
  --surface: #1a222b;
  --ink: #e7ecf2;
  --ink-soft: #a6b1be;
  --ink-faint: #75808d;
  --accent: #2fbcab;
  --accent-ink: #06211d;
  --accent-soft: #143430;
  --warn-bg: #2b2410;
  --warn-border: #6a5620;
  --warn-ink: #eacc7b;
  --danger: #f07b72;
  --warm: #e2a352;
  --line: #2b3542;
  --input-bg: #141b22;
  --input-focus-bg: #10161c;
  --btn-primary-hover: #26a293;
  --chip-hover: #1b453f;
  --del-hover-bg: #3a2320;
  --summary-bg: #141b22;
  --urgent-bg: #3a1d19;
  --urgent-border: #7a3830;
  --urgent-ink: #f3a99f;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 4px 16px rgba(0, 0, 0, .35);
}

/* ---------------- print (doctor summary) ---------------- */

@media print {
  body * { visibility: hidden; }
  #summary-modal, #summary-modal * { visibility: visible; }
  #summary-modal { position: absolute; inset: 0; box-shadow: none; width: 100%; }
  .modal-actions, .modal-head button { display: none !important; }
  #summary-text { max-height: none; border: none; background: none; }
}