/* ═══ KALKULATOR ═════════════════════════════════════════════════ */

/* minmax(0, 1fr) — tanpa ini kolom grid memakai min-width:auto sehingga
   isinya (kartu hasil) menolak menyusut dan meluber di layar sempit. */
.calc { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--sp-4); align-items: start; }
@media (min-width: 1000px) {
  .calc { grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr); gap: var(--sp-6); }
}

/* ── Form ────────────────────────────────────────────────────────── */
.calc__form {
  background: var(--clr-white);
  border: 1px solid var(--clr-gray-200);
  border-radius: var(--r-xl);
  padding: clamp(24px, 3.5vw, 40px);
  display: grid;
  gap: var(--sp-3);
  box-shadow: var(--sh-sm);
}

.field { display: grid; gap: 9px; }
.field > label,
.field > .field__label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--clr-dark);
}
.field__hint { font-size: 0.8rem; color: var(--clr-gray-500); font-weight: 400; }

.input, .select {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid var(--clr-gray-200);
  border-radius: var(--r-md);
  background: var(--clr-white);
  font-size: 0.95rem;
  color: var(--clr-dark);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.input:focus, .select:focus {
  outline: none;
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 4px var(--clr-primary-light);
}

.select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b6b66' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 18px;
  padding-right: 44px;
}

/* Radio berat sak sebagai segmented control */
.segmented {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px;
  padding: 6px;
  background: var(--clr-gray-100);
  border-radius: var(--r-pill);
}
.segmented label {
  position: relative;
  display: grid;
  place-items: center;
  padding: 11px 8px;
  border-radius: var(--r-pill);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--clr-gray-600);
  cursor: pointer;
  transition: var(--t-fast);
}
.segmented input { position: absolute; opacity: 0; pointer-events: none; }
.segmented input:checked + span { color: #fff; }
.segmented label:has(input:checked) { background: var(--clr-primary); color: #fff; box-shadow: var(--sh-xs); }

/* Slider waste buffer */
.range-row { display: flex; align-items: center; gap: 14px; }
.range {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  border-radius: var(--r-pill);
  background: var(--clr-gray-200);
  outline: none;
}
.range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--clr-primary);
  border: 3px solid #fff;
  box-shadow: var(--sh-sm);
  cursor: pointer;
}
.range::-moz-range-thumb {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--clr-primary);
  border: 3px solid #fff;
  box-shadow: var(--sh-sm);
  cursor: pointer;
}
.range-value {
  min-width: 62px;
  text-align: center;
  padding: 8px 10px;
  border-radius: var(--r-sm);
  background: var(--clr-primary-light);
  color: var(--clr-primary);
  font-weight: 700;
  font-size: 0.9rem;
}

/* ── Hasil ───────────────────────────────────────────────────────── */
.calc__result {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-2);
}

.result-hero {
  background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-primary-dark) 100%);
  border-radius: var(--r-xl);
  color: #fff;
  padding: clamp(26px, 3.5vw, 38px);
  position: relative;
  overflow: hidden;
}
.result-hero::before {
  content: '';
  position: absolute;
  width: 300px; height: 300px;
  right: -110px; top: -140px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
}
.result-hero > * { position: relative; }
.result-hero__label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.82);
}
.result-hero__value {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 4.6rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  margin-top: 8px;
}
.result-hero__value small { font-size: 0.3em; font-weight: 600; letter-spacing: 0; margin-left: 8px; }
.result-hero__note { font-size: 0.85rem; color: rgba(255, 255, 255, 0.82); margin-top: 12px; }

/* min(140px, 100%) — di layar sangat sempit kolom boleh lebih kecil dari
   140px daripada memaksa grid melebar melewati layar. */
.result-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(140px, 100%), 1fr)); gap: var(--sp-2); }
.result-item {
  background: var(--clr-white);
  border: 1px solid var(--clr-gray-200);
  border-radius: var(--r-md);
  padding: 18px 20px;
  display: grid;
  gap: 4px;
}
.result-item span { font-size: 0.78rem; color: var(--clr-gray-500); }
.result-item strong {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--clr-dark);
  letter-spacing: -0.02em;
}

.result-note {
  display: flex;
  gap: 11px;
  align-items: flex-start;
  padding: 15px 18px;
  background: var(--clr-primary-xlight);
  border-radius: var(--r-md);
  font-size: 0.83rem;
  line-height: 1.6;
  color: var(--clr-gray-600);
}
.result-note svg { width: 17px; height: 17px; color: var(--clr-primary); flex: none; margin-top: 2px; }

/* ── Tabel referensi ─────────────────────────────────────────────── */
.ref-wrap {
  background: var(--clr-white);
  border: 1px solid var(--clr-gray-200);
  border-radius: var(--r-lg);
  overflow-x: auto;
}
.ref-table { min-width: 640px; font-size: 0.9rem; }
.ref-table thead th {
  background: var(--clr-primary-light);
  color: var(--clr-primary-dark);
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-align: left;
  padding: 15px 18px;
  white-space: nowrap;
}
.ref-table thead th:first-child { border-top-left-radius: var(--r-lg); }
.ref-table thead th:last-child { border-top-right-radius: var(--r-lg); }
.ref-table tbody tr:nth-child(even) { background: var(--clr-gray-50); }
.ref-table tbody tr:hover { background: var(--clr-primary-xlight); }
.ref-table td { padding: 14px 18px; border-top: 1px solid var(--clr-gray-200); }
.ref-table td:first-child { color: var(--clr-gray-400); font-weight: 600; width: 52px; }
.ref-table td:nth-child(2) { color: var(--clr-dark); font-weight: 600; }