/* Kalkulator PPN — tema botanical gold, mobile-first */
:root {
  --paper: #FAF6ED;
  --paper-soft: #F2ECDD;
  --card: #FFFFFF;
  --ink: #1E2B24;
  --muted: #617163;
  --green: #13402E;
  --green-deep: #0E3325;
  --gold: #BE9433;
  --gold-dark: #A37C28;
  --gold-ink: #7A5C1E;
  --border: rgba(29, 42, 35, 0.1);
  --radius: 20px;
  --shadow: 0 18px 44px -18px rgba(14, 51, 37, 0.22);
  --font: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.page { min-height: 100vh; display: flex; flex-direction: column; }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(600px 300px at 85% -10%, rgba(190, 148, 51, 0.22), transparent 60%),
    radial-gradient(500px 260px at 10% 110%, rgba(190, 148, 51, 0.12), transparent 60%),
    var(--green-deep);
  color: #FAF6ED;
  padding: 52px 20px 84px;
  text-align: center;
}

.hero-inner { max-width: 620px; margin: 0 auto; }

.eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid rgba(190, 148, 51, 0.45);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.hero h1 {
  font-size: clamp(2rem, 6vw, 2.9rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.hero h1 .gold { color: var(--gold); }

.subtitle {
  margin-top: 10px;
  color: rgba(250, 246, 237, 0.78);
  font-size: 1rem;
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: 600px;
  margin: -56px auto 0;
  padding: 0 18px 40px;
  flex: 1;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px 22px;
  margin-bottom: 20px;
}

.card h2 { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; }

/* ---------- Tabs ---------- */
.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--paper-soft);
  border-radius: 14px;
  padding: 5px;
  margin-bottom: 22px;
}

.tab {
  border: 0;
  background: transparent;
  font-family: var(--font);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--muted);
  padding: 11px 8px;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}

.tab.active {
  background: var(--green);
  color: #FAF6ED;
  box-shadow: 0 6px 16px -6px rgba(14, 51, 37, 0.5);
}

/* ---------- Fields ---------- */
.field { margin-bottom: 18px; }

.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 8px;
}

.rate-row { display: flex; gap: 10px; align-items: stretch; }

.rate-row input[type="number"] {
  width: 110px;
  flex-shrink: 0;
}

input[type="text"], input[type="number"] {
  font-family: var(--font);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--ink);
  background: var(--paper);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  width: 100%;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(190, 148, 51, 0.18);
}

.chips { display: flex; gap: 8px; flex: 1; }

.chip {
  flex: 1;
  border: 1.5px solid var(--border);
  background: var(--card);
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--muted);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.chip.active {
  border-color: var(--gold);
  color: var(--gold-ink);
  background: rgba(190, 148, 51, 0.1);
}

.input-wrap { position: relative; }

.input-wrap .prefix {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-weight: 700;
  color: var(--gold-ink);
  font-size: 1.05rem;
}

.input-wrap input { padding-left: 48px; font-size: 1.35rem; }

/* ---------- Results ---------- */
.results {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 6px 16px;
  margin: 20px 0 12px;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--border);
}

.result-row:last-child { border-bottom: 0; }

.result-label { font-size: 0.88rem; color: var(--muted); font-weight: 500; }

.result-value {
  font-size: 1.05rem;
  font-weight: 700;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.result-row.highlight .result-value { font-size: 1.3rem; }
.gold-text { color: var(--gold-ink); }

.result-row.total {
  background: var(--green-deep);
  margin: 6px -16px -6px;
  padding: 14px 16px;
  border-radius: 0 0 13px 13px;
  border-bottom: 0;
}

.result-row.total .result-label { color: rgba(250, 246, 237, 0.75); font-weight: 600; }
.result-row.total .result-value { color: #FAF6ED; font-size: 1.35rem; }

.formula {
  font-size: 0.8rem;
  color: var(--muted);
  background: rgba(190, 148, 51, 0.08);
  border-radius: 10px;
  padding: 10px 12px;
  margin-bottom: 18px;
  font-variant-numeric: tabular-nums;
}

/* ---------- Buttons ---------- */
.actions { display: flex; gap: 10px; }

.btn {
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: 12px;
  padding: 13px 18px;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
}

.btn:active { transform: scale(0.98); }

.btn-primary {
  flex: 1;
  background: var(--green);
  color: #FAF6ED;
  box-shadow: 0 10px 22px -10px rgba(14, 51, 37, 0.55);
}

.btn-primary:hover { background: var(--green-deep); }

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--muted);
}

.btn-ghost:hover { border-color: var(--gold); color: var(--gold-ink); }

.btn-sm { padding: 8px 14px; font-size: 0.82rem; }

.btn-copied { background: var(--gold) !important; color: #fff !important; }

/* ---------- Info & history ---------- */
.info-card ul { padding-left: 20px; color: var(--muted); font-size: 0.92rem; }
.info-card li { margin-bottom: 8px; }
.info-card strong { color: var(--ink); }

.history-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.history-head h2 { margin-bottom: 0; }

.history-list { list-style: none; }

.history-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  padding: 10px 2px;
  border-bottom: 1px dashed var(--border);
  font-size: 0.88rem;
}

.history-list li:last-child { border-bottom: 0; }

.history-list .h-mode {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gold-ink);
  background: rgba(190, 148, 51, 0.12);
  padding: 3px 9px;
  border-radius: 999px;
  white-space: nowrap;
}

.history-list .h-detail { color: var(--muted); flex: 1; }
.history-list .h-total { font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; }

.empty-note { font-size: 0.88rem; color: var(--muted); }

/* ---------- Footer ---------- */
footer {
  text-align: center;
  padding: 18px;
  font-size: 0.82rem;
  color: var(--muted);
}

@media (min-width: 640px) {
  .card { padding: 28px 26px; }
  .hero { padding: 64px 20px 96px; }
}