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

:root {
  --ink: #0a0a0a;
  --ink-soft: #111111;
  --surface: #161616;
  --surface-up: #1e1e1e;
  --border: rgba(255, 255, 255, 0.07);
  --border-hi: rgba(255, 255, 255, 0.14);
  --text: #f0f0f0;
  --text-dim: #a0a0a0;
  --text-mute: #606060;
  --blue: #F5C200;
  --blue-strong: #C89E00;
  --blue-glow: rgba(245, 194, 0, 0.22);
  --teal: #F5C200;
  --teal-glow: rgba(245, 194, 0, 0.18);
  --c-ess: #ff4b4b;
  --c-ath: #ff9f2e;
  --c-fit: #32e87c;
  --c-avg: #f5d328;
  --c-obs: #c0392b;
  --radius: 22px;
  --radius-sm: 14px;
  --shadow: 0 32px 80px rgba(0, 0, 0, 0.75);
  --shadow-soft: 0 16px 40px rgba(0, 0, 0, 0.45);
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(245, 194, 0, 0.08), transparent 28%),
    radial-gradient(circle at bottom right, rgba(245, 194, 0, 0.04), transparent 24%),
    var(--ink);
  overflow-x: hidden;
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 60px 60px;
}

.bg-glow {
  position: fixed;
  z-index: 0;
  border-radius: 999px;
  filter: blur(110px);
  pointer-events: none;
}

.glow-1 {
  top: -180px;
  left: -160px;
  width: 520px;
  height: 520px;
  background: rgba(245, 194, 0, 0.10);
}

.glow-2 {
  right: -140px;
  bottom: -160px;
  width: 460px;
  height: 460px;
  background: rgba(245, 194, 0, 0.05);
}

.container {
  position: relative;
  z-index: 1;
  max-width: 1140px;
  margin: 0 auto;
  padding: 48px 24px 40px;
}

.header {
  margin-bottom: 36px;
}

.header-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px 8px 10px;
  border: 1px solid var(--border-hi);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(10px);
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.pill-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 14px var(--teal);
  animation: pulse 2.2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.45;
    transform: scale(0.8);
  }
}

.hero {
  margin-bottom: 44px;
}

.hero h1 {
  margin-bottom: 18px;
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: clamp(52px, 7vw, 90px);
  line-height: 0.96;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: #ffffff;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, #F5C200 0%, #FFD84D 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  max-width: 520px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-dim);
}

.layout {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 20px;
  align-items: start;
}

.card {
  position: relative;
  overflow: hidden;
  padding: 28px;
  background: linear-gradient(180deg, rgba(20, 20, 20, 0.97), rgba(14, 14, 14, 0.97));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.card::after {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.16) 42%, transparent);
}

.card-label {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin-bottom: 22px;
  padding: 0 10px;
  border: 1px solid var(--border-hi);
  border-radius: 8px;
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-mute);
}

.field-group {
  margin-bottom: 16px;
}

.field-label {
  display: block;
  margin-bottom: 7px;
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.fields-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 16px;
}

.select-wrap,
.input-wrap {
  position: relative;
}

.select-wrap select,
.input-wrap input {
  width: 100%;
  height: 48px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-up);
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.select-wrap select {
  padding: 0 42px 0 14px;
  appearance: none;
  cursor: pointer;
}

.input-wrap input {
  padding: 0 48px 0 14px;
}

.select-wrap select:hover,
.input-wrap input:hover {
  border-color: var(--border-hi);
}

.select-wrap select:focus,
.input-wrap input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px var(--blue-glow);
  background: rgba(245, 194, 0, 0.05);
}

.input-wrap input::placeholder {
  color: var(--text-mute);
}

.select-arrow {
  position: absolute;
  top: 50%;
  right: 14px;
  width: 12px;
  height: 8px;
  transform: translateY(-50%);
  color: var(--text-dim);
  pointer-events: none;
}

.input-unit {
  position: absolute;
  top: 50%;
  right: 14px;
  transform: translateY(-50%);
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-mute);
  pointer-events: none;
}

.input-wrap input::-webkit-outer-spin-button,
.input-wrap input::-webkit-inner-spin-button {
  -webkit-appearance: none;
}

.input-wrap input[type='number'] {
  -moz-appearance: textfield;
}

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 8px;
}

.btn-calc,
.btn-reset {
  height: 50px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.btn-calc {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 22px;
  border: none;
  background: linear-gradient(135deg, var(--blue), var(--blue-strong));
  color: #0a0a0a;
  box-shadow: 0 10px 30px rgba(245, 194, 0, 0.34);
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-weight: 700;
  letter-spacing: 0.04em;
  overflow: hidden;
  position: relative;
}

.btn-calc::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.14), transparent);
  pointer-events: none;
}

.btn-calc:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 38px rgba(245, 194, 0, 0.42);
}

.btn-calc:active {
  transform: translateY(0);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
}

.btn-icon svg {
  width: 18px;
  height: 18px;
}

.btn-reset {
  padding: 0 20px;
  border: 1px solid var(--border-hi);
  background: transparent;
  color: var(--text-dim);
  font-family: inherit;
  font-weight: 500;
}

.btn-reset:hover {
  background: var(--surface-up);
  border-color: rgba(255, 255, 255, 0.22);
  color: var(--text);
}

.measure-hints {
  margin-top: 22px;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.025);
}

.hints-title {
  margin-bottom: 10px;
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-mute);
}

.measure-hints ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.measure-hints li {
  position: relative;
  padding-left: 14px;
  font-size: 13px;
  color: var(--text-dim);
}

.measure-hints li::before {
  content: '·';
  position: absolute;
  left: 0;
  top: -1px;
  color: var(--teal);
  font-size: 18px;
  line-height: 1;
}

.measure-hints strong {
  color: var(--text);
}

.result-hero {
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}

.result-number-wrap {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  margin-bottom: 6px;
}

.result-number {
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: clamp(64px, 10vw, 96px);
  line-height: 0.95;
  font-weight: 800;
  letter-spacing: -0.05em;
  color: #ffffff;
}

.result-pct {
  padding-bottom: 8px;
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: 28px;
  font-weight: 700;
  color: var(--text-dim);
}

.result-cat {
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--teal);
}

.scale-block {
  margin-bottom: 28px;
}

.scale-track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 4px;
  margin-bottom: 10px;
  height: 12px;
}

.scale-fill {
  height: 12px;
  border-radius: 999px;
}

.seg-essential { background: var(--c-ess); }
.seg-athletes { background: var(--c-ath); }
.seg-fitness { background: var(--c-fit); }
.seg-average { background: var(--c-avg); }
.seg-obese { background: var(--c-obs); }

.scale-thumb {
  position: absolute;
  top: -6px;
  left: 0;
  transform: translateX(-50%);
  transition: left 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
}

.scale-thumb-tip {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #ffffff;
  border: 3px solid var(--ink);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.28), 0 6px 16px rgba(0, 0, 0, 0.45);
}

.scale-legend {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-mute);
  text-align: center;
}

.metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.metric-tile {
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(28, 28, 28, 0.95), rgba(18, 18, 18, 0.95));
  transition: border-color 0.2s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.metric-tile:hover {
  border-color: var(--border-hi);
  transform: translateY(-1px);
  box-shadow: var(--shadow-soft);
}

.metric-tile--accent {
  border-color: rgba(245, 194, 0, 0.25);
  background: linear-gradient(180deg, rgba(245, 194, 0, 0.07), rgba(29, 29, 29, 0.96));
}

.metric-label {
  display: block;
  margin-bottom: 6px;
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-mute);
}

.metric-value {
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.metric-tile--accent .metric-value {
  color: var(--teal);
}

.footer {
  margin-top: 36px;
  text-align: center;
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-mute);
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: clamp(44px, 11vw, 72px);
  }
}

@media (max-width: 560px) {
  .container {
    padding: 28px 16px 32px;
  }

  .hero {
    margin-bottom: 28px;
  }

  .fields-grid,
  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .form-actions {
    flex-direction: column;
  }

  .btn-calc,
  .btn-reset {
    width: 100%;
    justify-content: center;
  }

  .result-number {
    font-size: 72px;
  }

  .scale-legend {
    font-size: 9px;
  }
}
/* ── HEADER TOP ─────────────────────────────────────── */
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-area {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
  display: block;
}

.logo-img.error,
.logo-img[src=""] {
  display: none;
}

.logo-fallback {
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--teal);
  display: none;
}

/* show fallback text if image fails */
.logo-img.img-error { display: none; }
.logo-img.img-error ~ .logo-fallback { display: block; }

/* ── VISUALISASI BLOCK ──────────────────────────────── */
.viz-block {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  align-items: start;
}

.viz-label {
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-mute);
  margin-bottom: 12px;
}

/* Donut */
.viz-donut-wrap {
  display: flex;
  flex-direction: column;
}

.donut-container {
  display: flex;
  align-items: center;
  gap: 16px;
}

.donut-bg {
  stroke: rgba(255,255,255,0.06);
}

.donut-lean {
  stroke: #F5C200;
  stroke-linecap: round;
  transition: stroke-dasharray 0.7s cubic-bezier(0.34, 1.56, 0.64, 1),
              stroke-dashoffset 0.7s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.donut-fat {
  stroke: rgba(255, 255, 255, 0.18);
  stroke-linecap: round;
  transition: stroke-dasharray 0.7s cubic-bezier(0.34, 1.56, 0.64, 1),
              stroke-dashoffset 0.7s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.donut-center-val {
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: 22px;
  font-weight: 800;
  fill: #ffffff;
  letter-spacing: -0.04em;
}

.donut-center-label {
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: 8px;
  font-weight: 600;
  fill: rgba(255,255,255,0.35);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.donut-legend {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.donut-leg-item {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--text-dim);
}

.donut-leg-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.donut-leg-fat { background: rgba(255,255,255,0.28); }
.donut-leg-lean { background: #F5C200; }

/* Silhouette */
.viz-silhouette-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.silhouette-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.sil-body {
  fill: rgba(255,255,255,0.12);
  transition: fill 0.6s ease;
}

.sil-cat-badge {
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,0.07);
  color: var(--text-mute);
  transition: background 0.4s ease, color 0.4s ease;
  white-space: nowrap;
}

@media (max-width: 560px) {
  .viz-block {
    grid-template-columns: 1fr;
  }
  .viz-silhouette-wrap {
    flex-direction: row;
    gap: 16px;
    align-items: flex-start;
  }
}

.gender-toggle {
  display: flex;
  gap: 20px;
}

.radio {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-dim);
}

.radio input {
  display: none;
}

.radio span {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid var(--border-hi);
  position: relative;
}

.radio input:checked + span {
  border-color: var(--orange);
}

.radio input:checked + span::after {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--orange);
}

.fields-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 16px;
}

.field-group {
  width: 100%;
  min-width: 0;
}

.input-wrap {
  position: relative;
  width: 100%;
}

.input-wrap input,
.select-wrap select {
  width: 100%;
  display: block;
}

#hipField {
  width: 100%;
  margin-top: 0;
}

.gender-toggle {
  display: flex;
  align-items: center;
  gap: 18px;
}

.gender-option {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  color: #b3b3b3;
  font-size: 14px;
  font-weight: 600;
}

.gender-option .dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.6);
  position: relative;
  transition: all 0.2s ease;
}

.gender-option input {
  display: none;
}

.gender-option input:checked + .dot {
  border-color: #f5c400;
  box-shadow: 0 0 0 3px rgba(245, 196, 0, 0.14);
}

.gender-option input:checked + .dot::after {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: #f5c400;
}

.gender-option input:checked ~ .gender-text {
  color: #f5c400;
}

@media (max-width: 560px) {
  .btn-calc {
    min-height: 56px !important;
    height: 56px !important;
    padding: 0 20px !important;
  }

  .btn-reset {
    min-height: 56px !important;
    height: 56px !important;
  }
}