:root {
  --bg: #f6f8f7;
  --surface: #ffffff;
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --teal: #0f766e;
  --teal-soft: #ccfbf1;
  --teal-ink: #115e59;
  --amber: #b45309;
  --amber-soft: #fef3c7;
  --rose: #be123c;
  --rose-soft: #ffe4e6;
  --green: #15803d;
  --green-soft: #dcfce7;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(15, 23, 42, 0.06);
  --radius: 14px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.45;
  min-height: 100vh;
}
a { color: var(--teal); }
.skip {
  position: absolute; left: -9999px;
}
.skip:focus { left: 1rem; top: 1rem; background: #fff; padding: .5rem 1rem; z-index: 20; }

.container { width: min(960px, calc(100% - 2rem)); margin: 0 auto; }

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 10;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 56px; gap: 1rem;
}
.brand { display: flex; align-items: center; gap: .55rem; text-decoration: none; color: inherit; font-weight: 700; }
.brand-mark {
  width: 28px; height: 28px; border-radius: 8px; background: var(--teal);
  color: #ecfdf5; display: grid; place-items: center;
}
.brand-sub { color: var(--muted); font-weight: 500; font-size: .85rem; }

.hero { padding: 1.75rem 0 1rem; }
.eyebrow {
  margin: 0 0 .4rem; color: var(--teal-ink); font-size: .8rem;
  font-weight: 650; letter-spacing: .02em; text-transform: uppercase;
}
h1 { margin: 0 0 .5rem; font-size: clamp(1.55rem, 4vw, 2rem); letter-spacing: -0.02em; }
.lede { margin: 0; color: var(--muted); max-width: 38rem; }

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
  margin: 1rem 0 1.25rem;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: .75rem;
}
@media (min-width: 640px) {
  .form-grid { grid-template-columns: 1.6fr .7fr auto; align-items: end; }
}
label { display: grid; gap: .35rem; font-size: .85rem; font-weight: 600; color: var(--ink); }
input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: .7rem .8rem;
  font: inherit;
  background: #fff;
  color: var(--ink);
}
input:focus { outline: 2px solid #5eead4; outline-offset: 1px; border-color: var(--teal); }
.btn {
  appearance: none; border: 0; border-radius: 10px;
  padding: .75rem 1.1rem; font: inherit; font-weight: 650;
  cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
}
.btn:disabled { opacity: .6; cursor: not-allowed; }
.btn-primary { background: var(--teal); color: #fff; }
.btn-primary:hover:not(:disabled) { background: #0d9488; }
.btn-ghost { background: transparent; color: var(--teal-ink); border: 1px solid var(--line); }
.hint { margin: .65rem 0 0; color: var(--muted); font-size: .82rem; }

.meta-row {
  display: flex; flex-wrap: wrap; gap: .5rem .75rem;
  align-items: center; margin: 0 0 1rem; color: var(--muted); font-size: .85rem;
}
.pill {
  display: inline-flex; align-items: center; gap: .3rem;
  background: var(--teal-soft); color: var(--teal-ink);
  border-radius: 999px; padding: .2rem .65rem; font-size: .78rem; font-weight: 650;
}
.pill.warn { background: var(--amber-soft); color: var(--amber); }
.pill.cache { background: #e0e7ff; color: #3730a3; }

.results {
  display: grid; grid-template-columns: 1fr; gap: 1rem; margin-bottom: 1.5rem;
}
@media (min-width: 720px) {
  .results { grid-template-columns: 1fr 1fr; }
}
.col {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 180px;
}
.col.winner { border-color: #34d399; box-shadow: 0 0 0 2px rgba(52, 211, 153, .25); }
.col-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: .85rem 1rem; border-bottom: 1px solid var(--line); background: #f8fafc;
}
.col-head h2 { margin: 0; font-size: 1rem; }
.badge-cheap {
  background: var(--green-soft); color: var(--green);
  font-size: .72rem; font-weight: 700; padding: .15rem .5rem; border-radius: 999px;
}
.col-body { padding: .75rem; display: grid; gap: .55rem; }

.card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: .75rem .8rem;
  display: grid; gap: .25rem;
  text-decoration: none; color: inherit;
  transition: border-color .15s, background .15s;
}
.card:hover { border-color: #99f6e4; background: #f0fdfa; }
.card.best { background: #f0fdf4; border-color: #86efac; }
.card-name { font-weight: 650; font-size: .95rem; }
.card-size, .card-delivery { color: var(--muted); font-size: .8rem; }
.card-price-row { display: flex; align-items: baseline; gap: .45rem; margin-top: .15rem; }
.card-price { font-size: 1.15rem; font-weight: 750; color: var(--teal-ink); }
.card-mrp { color: var(--muted); text-decoration: line-through; font-size: .85rem; }
.card-out { color: var(--rose); font-size: .78rem; font-weight: 600; }

.state {
  padding: 1.25rem 1rem; text-align: center; color: var(--muted); font-size: .9rem;
}
.state.error {
  background: var(--rose-soft); color: #9f1239; border-radius: 10px; text-align: left;
}
.state.empty { background: #f8fafc; border-radius: 10px; }
.spinner {
  width: 22px; height: 22px; border-radius: 50%;
  border: 2.5px solid #99f6e4; border-top-color: var(--teal);
  animation: spin .7s linear infinite; margin: 0 auto .6rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

.disclaimer {
  margin: 0 0 2rem; padding: 0.9rem 1rem;
  background: #fff; border: 1px dashed var(--line); border-radius: 12px;
  color: var(--muted); font-size: .8rem;
}
.site-footer {
  border-top: 1px solid var(--line); padding: 1.25rem 0 2rem;
  color: var(--muted); font-size: .8rem; text-align: center;
}