/* Coffee Guru — coffee-themed, mobile-first, vanilla CSS. */

:root {
  --espresso:   #241510;
  --espresso-2: #34231a;
  --espresso-3: #3a2719;
  --crema:      #F2E4CE;
  --foam:       #FBF6EE;
  --bean:       #3A2616;
  --muted:      #6F5740;
  --accent:     #D97706;
  --accent-d:   #B45309;
  --accent-l:   #F59E0B;
  --border:     #E0CFB6;
  --border-d:   #4A3526;
  --good:       #4D6B0E;
  --good-bg:    #E9F0D8;
  --close:      #B45309;
  --close-bg:   #FBE7CC;
  --off:        #9A3412;
  --off-bg:     #F6D9CC;
  --ice:        #5B7B8A;
  --radius:     16px;
  --radius-sm:  10px;
  --shadow:     0 10px 30px -12px rgba(20, 10, 4, .45);
  --shadow-sm:  0 4px 14px -8px rgba(20, 10, 4, .35);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: "Inter", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  color: var(--crema);
  background: var(--espresso);
  background-image:
    radial-gradient(900px 500px at 50% -10%, #3a2719 0%, transparent 60%),
    radial-gradient(600px 400px at 100% 0%, rgba(217,119,6,.10) 0%, transparent 55%);
  min-height: 100dvh;
}

h1, h2, .brand-name, .v.big, .primary, .status { font-family: "Fraunces", Georgia, serif; }

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute; left: -999px; top: 8px;
  background: var(--accent); color: #fff; padding: 8px 14px; border-radius: 8px; z-index: 50;
}
.skip-link:focus { left: 8px; }

/* ---------- Hero ---------- */
.hero {
  color: var(--crema);
  padding: clamp(28px, 8vw, 56px) 20px 26px;
  text-align: center;
  background:
    radial-gradient(120% 100% at 50% 0%, rgba(217,119,6,.18) 0%, transparent 55%),
    linear-gradient(180deg, var(--espresso-3), var(--espresso));
  border-bottom: 1px solid var(--border-d);
}
.hero-inner { max-width: 560px; margin: 0 auto; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--accent-l); }
.brand-mark { color: var(--accent); }
.brand-name { font-size: 18px; font-weight: 600; letter-spacing: .02em; color: var(--crema); }
.tagline {
  font-size: clamp(28px, 8vw, 40px);
  line-height: 1.1; font-weight: 600; margin: 14px 0 10px;
  letter-spacing: -.01em;
}
.tagline em { color: var(--accent-l); font-style: italic; font-weight: 500; }
.sub { color: #C9B79E; font-size: 15px; margin: 0 auto; max-width: 42ch; }

/* ---------- Layout ---------- */
.wrap {
  max-width: 560px;
  margin: 0 auto;
  padding: 22px 16px 60px;
  padding-bottom: calc(60px + env(safe-area-inset-bottom));
  display: flex; flex-direction: column; gap: 16px;
}

/* ---------- Cards ---------- */
.card {
  background: var(--crema);
  color: var(--bean);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  position: relative;
}
.card-h { font-size: 20px; font-weight: 600; margin: 0; color: var(--bean); }
.step { padding-left: 56px; }
.step-num {
  position: absolute; left: 16px; top: 18px;
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--accent); color: var(--foam);
  display: grid; place-items: center;
  font-family: "Inter"; font-weight: 700; font-size: 14px;
}

/* ---------- Fields / inputs ---------- */
.field { margin-top: 16px; }
.field:first-of-type { margin-top: 14px; }
label, .field-label { display: block; font-size: 13px; font-weight: 600; color: var(--muted); margin-bottom: 7px; letter-spacing: .02em; }
.hint { font-weight: 400; color: var(--muted); opacity: .8; }
.input-row { position: relative; display: flex; align-items: center; }
input[type="number"] {
  width: 100%; height: 50px;
  font-family: "Inter"; font-size: 20px; font-weight: 600;
  color: var(--bean); background: var(--foam);
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  padding: 0 44px 0 14px; outline: none;
  font-variant-numeric: tabular-nums;
  transition: border-color .15s, box-shadow .15s;
}
input[type="number"]:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(217,119,6,.22); }
.unit {
  position: absolute; right: 14px; font-size: 14px; font-weight: 600; color: var(--muted);
  pointer-events: none;
}
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* ---------- Chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  appearance: none; border: 1.5px solid var(--border); background: var(--foam);
  color: var(--bean); font-family: "Inter"; font-size: 14px; font-weight: 600;
  padding: 10px 16px; border-radius: 999px; cursor: pointer;
  min-height: 44px; display: inline-flex; align-items: center;
  transition: background .15s, color .15s, border-color .15s, transform .08s;
  touch-action: manipulation;
}
.chip:hover { border-color: var(--accent); }
.chip:active { transform: scale(.97); }
.chip.on { background: var(--accent); border-color: var(--accent); color: var(--foam); }
.chip:focus-visible { outline: 3px solid rgba(217,119,6,.4); outline-offset: 2px; }

/* ---------- Target card ---------- */
.target {
  margin-top: 18px; background: var(--espresso); color: var(--crema);
  border-radius: var(--radius-sm); padding: 16px 18px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px 18px;
}
.kv { display: flex; flex-direction: column; gap: 2px; }
.kv .k { font-size: 11.5px; text-transform: uppercase; letter-spacing: .08em; color: #B89C7A; font-weight: 600; }
.kv .v { font-size: 15px; color: var(--crema); font-weight: 500; }
.kv .v.big { font-size: 26px; font-weight: 600; color: var(--accent-l); font-variant-numeric: tabular-nums; line-height: 1.1; }
.band { font-size: 12px; color: #B89C7A; font-family: "Inter"; font-weight: 500; }
.target-cap { grid-column: 1 / -1; margin: 2px 0 0; font-size: 12px; color: #B89C7A; font-style: italic; font-family: "Inter"; }

/* ---------- Primary button ---------- */
.btn-primary {
  width: 100%; margin-top: 20px; height: 54px;
  background: linear-gradient(180deg, var(--accent-l), var(--accent));
  color: var(--foam); border: none; border-radius: var(--radius-sm);
  font-family: "Inter"; font-size: 17px; font-weight: 700; letter-spacing: .01em;
  cursor: pointer; box-shadow: 0 8px 20px -8px rgba(217,119,6,.7);
  transition: transform .08s, box-shadow .15s, filter .15s;
  touch-action: manipulation;
}
.btn-primary:hover { filter: brightness(1.04); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:focus-visible { outline: 3px solid rgba(217,119,6,.5); outline-offset: 3px; }

/* ---------- Verdict ---------- */
.verdict { border-left: 6px solid var(--muted); transition: border-color .2s; }
.verdict.empty { border-left-color: var(--border); }
.verdict.good  { border-left-color: var(--good);  background: linear-gradient(180deg, var(--good-bg),  var(--crema)); }
.verdict.close { border-left-color: var(--close); background: linear-gradient(180deg, var(--close-bg), var(--crema)); }
.verdict.off   { border-left-color: var(--off);   background: linear-gradient(180deg, var(--off-bg),   var(--crema)); }
.verdict-head { display: flex; align-items: center; gap: 10px; }
.status { font-size: 22px; font-weight: 600; }
.status.good { color: var(--good); }
.status.close { color: var(--close); }
.status.off { color: var(--off); }
.primary {
  margin-top: 12px; font-size: 22px; font-weight: 600; color: var(--bean); line-height: 1.2;
}
.action-label { display: block; font-family: "Inter"; font-size: 11.5px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); font-weight: 600; margin-bottom: 3px; }
.secondary { margin-top: 8px; font-size: 14px; font-weight: 600; color: var(--accent-d); }
.why { margin: 14px 0 0; font-size: 14.5px; color: var(--bean); line-height: 1.55; }
.tip { margin: 12px 0 0; font-size: 13px; color: var(--muted); font-style: italic; border-top: 1px dashed var(--border); padding-top: 12px; }
.empty { color: var(--muted); margin: 4px 0; font-style: italic; }

/* ---------- Drink reference ---------- */
.ref summary { list-style: none; cursor: pointer; display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.ref summary::-webkit-details-marker { display: none; }
.ref summary::after { content: "▾"; margin-left: auto; color: var(--accent); font-size: 16px; transition: transform .2s; }
.ref[open] summary::after { transform: rotate(180deg); }
.ref-sub { font-family: "Inter"; font-size: 13px; color: var(--muted); font-weight: 500; }
.drink-toggle { margin: 14px 0 8px; }
.drink-cap { font-size: 12.5px; color: var(--muted); margin: 0 0 10px; font-style: italic; }
.drink-list { display: flex; flex-direction: column; }
.drink { padding: 12px 0; border-bottom: 1px solid var(--border); }
.drink:first-child { padding-top: 2px; }
.drink:last-child { border-bottom: none; padding-bottom: 2px; }
.drink-top { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.d-name { font-family: "Fraunces", Georgia, serif; font-weight: 600; color: var(--bean); font-size: 16px; }
.d-ratio { color: var(--accent-d); font-variant-numeric: tabular-nums; font-weight: 600; font-size: 13px; white-space: nowrap; }
.range { font-size: 11px; opacity: .75; font-weight: 400; color: var(--muted); }
.d-grams { font-size: 13.5px; font-variant-numeric: tabular-nums; font-weight: 500; margin-top: 4px; }
.g-coffee { color: var(--bean); }
.g-add { color: var(--accent-d); }
.g-ice { color: var(--ice); }
.d-desc { font-size: 12.5px; color: var(--muted); margin-top: 3px; line-height: 1.45; }
.badge-hot { display: inline-block; margin-left: 6px; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; background: var(--close-bg); color: var(--close); padding: 2px 6px; border-radius: 999px; vertical-align: middle; }
.iced-note { font-size: 13px; color: var(--ice); background: rgba(91,123,138,.1); border-radius: 8px; padding: 10px 12px; margin: 12px 0 0; }
.source { font-size: 12px; color: var(--muted); margin: 14px 0 0; }

/* ---------- Footer ---------- */
.foot { text-align: center; color: #9C8466; font-size: 12.5px; padding: 14px 8px 0; }
.foot em { color: var(--accent-l); font-style: italic; }

/* ---------- Responsive ---------- */
@media (max-width: 360px) {
  .target { grid-template-columns: 1fr; }
  .step { padding-left: 52px; }
}

/* ---------- Motion / a11y ---------- */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}
:focus-visible { outline: 3px solid rgba(217,119,6,.5); outline-offset: 2px; }