/* ============================================================
   FIT LAB — fashion-editorial aesthetic
   Cream background, deep navy ink, mustard accent, serif display
   ============================================================ */

:root {
  --paper:        #f5f0e6;     /* warm cream */
  --paper-deep:   #ebe3d2;
  --ink:          #16223a;     /* deep navy */
  --ink-soft:     #3a4863;
  --ink-faint:    #8a93a6;
  --rule:         #c8bfae;
  --accent:       #c2a14b;     /* mustard gold */
  --accent-deep:  #9a7c2e;
  --good:         #2d6a4f;
  --warn:         #b67830;
  --bad:          #9b2c2c;
  --perfect:      #1f5d3a;

  --serif:  'Fraunces', 'Cormorant Garamond', Georgia, serif;
  --sans:   'Inter', -apple-system, sans-serif;
  --mono:   'JetBrains Mono', 'SF Mono', monospace;

  --max-width: 1100px;
}

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

html, body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

/* Subtle paper grain */
body::before {
  content: '';
  position: fixed; inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(194,161,75,0.05) 0, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(22,34,58,0.03) 0, transparent 40%);
  pointer-events: none;
  z-index: 0;
}

button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }

/* ============================================================
   Masthead
   ============================================================ */
.masthead {
  border-bottom: 1px solid var(--rule);
  padding: 22px 0;
  position: relative; z-index: 1;
}
.masthead-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-mark {
  font-size: 22px;
  color: var(--accent);
  display: inline-block;
  transform: translateY(-1px);
}
.brand-name {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 0.18em;
}
.masthead-nav {
  display: flex;
  gap: 28px;
}
.masthead-nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 500;
  position: relative;
  padding-bottom: 4px;
  transition: color .2s;
}
.masthead-nav a.active,
.masthead-nav a:hover {
  color: var(--ink);
}
.masthead-nav a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -1px; height: 2px;
  background: var(--accent);
}
.masthead-meta .issue {
  font-family: var(--serif);
  font-style: italic;
  color: var(--ink-faint);
  font-size: 14px;
}

/* ============================================================
   Container
   ============================================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px 64px;
  position: relative; z-index: 1;
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  padding: 88px 0 64px;
  border-bottom: 1px solid var(--rule);
  position: relative;
}
.hero-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin-bottom: 28px;
  display: inline-block;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--accent);
}
.hero-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(48px, 7vw, 84px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 28px;
}
.hero-title em {
  font-style: italic;
  font-weight: 300;
  color: var(--accent-deep);
}
.hero-sub {
  max-width: 560px;
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink-soft);
  margin-bottom: 40px;
}
.hero-stats {
  display: flex;
  gap: 48px;
  padding-top: 24px;
  border-top: 1px dashed var(--rule);
  width: fit-content;
}
.stat {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.stat-num {
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 500;
  line-height: 1;
  color: var(--ink);
}
.stat-lbl {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 6px;
}

/* ============================================================
   Step
   ============================================================ */
.step {
  padding: 72px 0 24px;
  border-bottom: 1px solid var(--rule);
}
.step:last-of-type { border-bottom: none; }
.step-head {
  display: flex;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 40px;
}
.step-num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--accent-deep);
  font-weight: 500;
}
.step-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 36px;
  letter-spacing: -0.01em;
}

/* ============================================================
   Product grid
   ============================================================ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.product-card {
  background: var(--paper);
  padding: 24px 20px;
  text-align: left;
  transition: background .15s, transform .15s;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 180px;
  border: 2px solid transparent;
  margin: -1px;
}
.product-card:hover {
  background: var(--paper-deep);
}
.product-card.selected {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--accent);
  z-index: 2;
  position: relative;
}
.product-card .pc-brand {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-deep);
}
.product-card.selected .pc-brand { color: var(--accent); }
.product-card .pc-name {
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.25;
  margin-top: 4px;
  flex: 1;
}
.product-card .pc-meta {
  font-family: var(--sans);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.05em;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
}
.product-card.selected .pc-meta { color: rgba(245,240,230,0.6); border-top-color: rgba(245,240,230,0.18); }

/* ============================================================
   Mode tabs
   ============================================================ */
.mode-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  margin-bottom: 40px;
}
.mode-tab {
  background: var(--paper);
  padding: 24px 20px;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: background .15s;
  border: 2px solid transparent;
  margin: -1px;
  position: relative;
}
.mode-tab:hover { background: var(--paper-deep); }
.mode-tab.active {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--accent);
  z-index: 2;
}
.mode-tab-num {
  font-family: var(--serif);
  font-style: italic;
  font-size: 28px;
  color: var(--accent-deep);
  line-height: 1;
}
.mode-tab.active .mode-tab-num { color: var(--accent); }
.mode-tab-label {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 500;
  margin-top: 4px;
}
.mode-tab-sub {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.mode-tab.active .mode-tab-sub { color: rgba(245,240,230,0.55); }

/* ============================================================
   Form
   ============================================================ */
.form-row {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
}
.form-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  width: 160px;
  flex-shrink: 0;
}
.seg-control {
  display: inline-flex;
  border: 1px solid var(--ink);
  border-radius: 0;
  overflow: hidden;
}
.seg-control button {
  padding: 10px 18px;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--ink);
  background: transparent;
  border-right: 1px solid var(--ink);
  transition: background .15s;
}
.seg-control button:last-child { border-right: none; }
.seg-control button:hover { background: var(--paper-deep); }
.seg-control button.active {
  background: var(--ink);
  color: var(--paper);
}

/* ============================================================
   Panel
   ============================================================ */
.panel {
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: 32px;
  margin-top: 24px;
}
.panel.hidden { display: none; }
.panel-title {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 8px;
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}
.panel-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 400;
}
.panel-desc {
  color: var(--ink-soft);
  font-size: 14px;
  margin-bottom: 20px;
  margin-top: 8px;
}

/* Measurement grid */
.measure-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 18px 24px;
  margin-top: 24px;
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.input-wrap {
  position: relative;
  border-bottom: 1.5px solid var(--ink);
  display: flex;
  align-items: baseline;
}
.input-wrap input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 8px 0;
  font-size: 18px;
  font-family: var(--serif);
  font-weight: 500;
  color: var(--ink);
  width: 100%;
}
.input-wrap input::placeholder { color: var(--ink-faint); }
.input-wrap .unit {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
  margin-left: 6px;
}
.field select {
  background: transparent;
  border: none;
  border-bottom: 1.5px solid var(--ink);
  padding: 8px 0;
  font-size: 18px;
  font-family: var(--serif);
  font-weight: 500;
  color: var(--ink);
  outline: none;
}

/* Brand reference rows */
.ref-row {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 20px;
}
.ref-line {
  display: grid;
  grid-template-columns: 1.2fr 1fr 0.8fr auto;
  gap: 16px;
  padding: 14px;
  background: var(--paper-deep);
  border: 1px solid var(--rule);
  align-items: end;
}
.ref-line .field { gap: 4px; }
.ref-line select {
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: 8px 10px;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 500;
  border-bottom: 1.5px solid var(--ink);
}
.ref-line .ref-remove {
  background: none;
  border: 1px solid var(--rule);
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  color: var(--ink-soft);
  transition: all .15s;
}
.ref-line .ref-remove:hover {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.btn-ghost {
  margin-top: 16px;
  padding: 10px 18px;
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink);
  border: 1px solid var(--ink);
  background: transparent;
  transition: all .15s;
}
.btn-ghost:hover { background: var(--ink); color: var(--paper); }

/* Shape grid */
.shape-block { margin-top: 24px; }
.shape-block:first-child { margin-top: 0; }
.shape-cat {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 14px;
  font-weight: 500;
}
.shape-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
}
.shape-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 18px 12px 14px;
  background: var(--paper);
  border: 1.5px solid var(--rule);
  color: var(--ink-soft);
  transition: all .15s;
}
.shape-card svg {
  width: 50px;
  height: 64px;
  margin-bottom: 12px;
}
.shape-card span {
  font-family: var(--serif);
  font-size: 14px;
  text-align: center;
}
.shape-card:hover {
  border-color: var(--ink);
  color: var(--ink);
}
.shape-card.selected {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--accent);
}

/* CTA row */
.cta-row {
  display: flex;
  justify-content: center;
  padding: 48px 0 0;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 18px 36px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 600;
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
  transition: all .2s;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.btn-primary::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: var(--accent);
  transition: left .35s ease;
  z-index: 0;
}
.btn-primary > * { position: relative; z-index: 1; }
.btn-primary:hover::before { left: 0; }
.btn-primary:hover { color: var(--ink); border-color: var(--accent); }
.btn-arrow { transition: transform .25s; }
.btn-primary:hover .btn-arrow { transform: translateX(4px); }

/* ============================================================
   Result
   ============================================================ */
.result-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--ink);
  margin-bottom: 32px;
}
.result-hero-left {
  background: var(--ink);
  color: var(--paper);
  padding: 48px 40px;
}
.result-product-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.result-product-name {
  font-family: var(--serif);
  font-size: 26px;
  line-height: 1.2;
  font-weight: 400;
  margin-bottom: 8px;
}
.result-product-meta {
  color: rgba(245,240,230,0.6);
  font-size: 13px;
  margin-bottom: 36px;
}
.result-recommend-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(245,240,230,0.55);
  margin-bottom: 8px;
}
.result-size-display {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-bottom: 16px;
}
.result-size {
  font-family: var(--serif);
  font-size: 96px;
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--accent);
}
.result-verdict-pill {
  display: inline-block;
  padding: 6px 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border: 1px solid currentColor;
  font-weight: 500;
}
.verdict-Recommended { color: var(--accent); }
.verdict-Good       { color: var(--accent); }
.verdict-Acceptable { color: #d4b659; }
.verdict-Compromise { color: #e0a85e; }
.verdict-Poor       { color: #e07a7a; }

.result-hero-right {
  background: var(--paper);
  padding: 48px 40px;
  display: flex;
  flex-direction: column;
}
.score-meter {
  margin-bottom: 28px;
}
.score-meter-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 10px;
}
.score-bar-wrap {
  height: 4px;
  background: var(--paper-deep);
  position: relative;
}
.score-bar-fill {
  position: absolute;
  inset: 0 auto 0 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-deep));
  transition: width 1s cubic-bezier(.2,.7,.2,1);
}
.score-bar-marks {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 9px;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
}
.confidence-block {
  border-top: 1px dashed var(--rule);
  padding-top: 20px;
  margin-top: auto;
}

/* Zone breakdown */
.zone-section {
  border: 1px solid var(--rule);
  padding: 32px;
  background: var(--paper);
  margin-bottom: 32px;
}
.zone-section-title {
  font-family: var(--serif);
  font-size: 22px;
  margin-bottom: 24px;
  font-weight: 500;
}
.zone-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--rule);
}
.zone-row {
  display: grid;
  grid-template-columns: 140px 1fr 120px;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
  align-items: center;
}
.zone-name {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 500;
  text-transform: capitalize;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.zone-numbers {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-faint);
  letter-spacing: 0.05em;
  text-transform: none;
  font-weight: 400;
}
.zone-bar-cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.zone-bar {
  position: relative;
  height: 28px;
  background: var(--paper-deep);
  border-left: 1px solid var(--rule);
  border-right: 1px solid var(--rule);
}
.zone-bar-ideal {
  position: absolute;
  top: 0; bottom: 0;
  background: rgba(194,161,75,0.18);
  border-left: 1px dashed var(--accent);
  border-right: 1px dashed var(--accent);
}
.zone-bar-marker {
  position: absolute;
  top: -3px; bottom: -3px;
  width: 3px;
  background: var(--ink);
  transition: left .8s cubic-bezier(.2,.7,.2,1);
}
.zone-bar-marker.tight { background: var(--bad); }
.zone-bar-marker.loose { background: var(--warn); }
.zone-bar-marker.perfect { background: var(--perfect); }
.zone-bar-scale {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 9px;
  color: var(--ink-faint);
  letter-spacing: 0.05em;
}
.zone-verdict {
  text-align: right;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
}
.verdict-tone-perfect { color: var(--perfect); }
.verdict-tone-near    { color: var(--ink-soft); }
.verdict-tone-warn    { color: var(--warn); }
.verdict-tone-bad     { color: var(--bad); }

/* Alterations */
.alterations {
  border: 1px solid var(--rule);
  background: var(--paper);
  padding: 32px;
  margin-bottom: 32px;
}
.alteration-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
  align-items: start;
}
.alteration-item:last-child { border-bottom: none; }
.alteration-zone {
  font-family: var(--serif);
  font-size: 14px;
  font-weight: 500;
  text-transform: capitalize;
  color: var(--ink);
}
.alteration-zone .alt-issue {
  display: block;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin-top: 4px;
}
.alteration-text {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.55;
}

/* All sizes mini-table */
.size-comparison {
  border: 1px solid var(--rule);
  background: var(--paper);
  padding: 32px;
}
.size-comparison h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  margin-bottom: 20px;
}
.size-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.size-cell {
  background: var(--paper);
  padding: 18px 12px;
  text-align: center;
}
.size-cell.is-best {
  background: var(--ink);
  color: var(--paper);
}
.size-cell-size {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 500;
  margin-bottom: 4px;
}
.size-cell-score {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  margin-bottom: 6px;
}
.size-cell.is-best .size-cell-score { color: rgba(245,240,230,0.6); }
.size-cell-verdict {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Footer */
.footer {
  border-top: 1px solid var(--rule);
  padding: 32px 0;
  background: var(--paper-deep);
  position: relative; z-index: 1;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 32px;
  align-items: center;
}
.footer-brand {
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: 0.18em;
  font-size: 13px;
  margin-left: 8px;
}
.footer-meta {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.footer-col-end { text-align: right; }

/* Loading */
.loading {
  text-align: center;
  padding: 60px 0;
  font-family: var(--serif);
  font-style: italic;
  color: var(--ink-faint);
  font-size: 17px;
}
.loading::after {
  content: '';
  display: inline-block;
  width: 20px;
  text-align: left;
  animation: dots 1.5s steps(4, end) infinite;
}
@keyframes dots {
  0%, 20% { content: ''; }
  40%     { content: '.'; }
  60%     { content: '..'; }
  80%, 100% { content: '...'; }
}

/* Responsive */
@media (max-width: 768px) {
  .masthead-inner { flex-direction: column; gap: 16px; }
  .masthead-nav { gap: 18px; flex-wrap: wrap; justify-content: center; }
  .container { padding: 0 20px 48px; }
  .hero { padding: 48px 0 40px; }
  .hero-stats { gap: 24px; }
  .step { padding: 48px 0 16px; }
  .step-title { font-size: 26px; }
  .mode-tabs { grid-template-columns: 1fr; }
  .form-row { flex-direction: column; align-items: flex-start; gap: 8px; }
  .form-label { width: auto; }
  .panel { padding: 22px 18px; }
  .ref-line { grid-template-columns: 1fr; }
  .result-hero { grid-template-columns: 1fr; }
  .result-hero-left, .result-hero-right { padding: 32px 24px; }
  .result-size { font-size: 64px; }
  .zone-row { grid-template-columns: 100px 1fr; }
  .zone-verdict { grid-column: 1 / -1; text-align: left; padding-top: 6px; }
  .footer-inner { grid-template-columns: 1fr; text-align: center; }
  .footer-col-end { text-align: center; }
}