/* ========================================
   Kimchi Fermentation Navigator
   Soft Scientific UI
   iOS Health × Tesla × Kitchen Tool
   ======================================== */

:root {
  /* Soft Scientific palette */
  --bg: #F4F7FA;
  --bg-glass: rgba(255, 255, 255, 0.55);
  --bg-glass-solid: rgba(255, 255, 255, 0.85);
  --bg-card: rgba(255, 255, 255, 0.72);
  --text: #1A2332;
  --text-secondary: #5B6B7D;
  --text-muted: #94A3B8;
  --border: rgba(148, 163, 184, 0.2);
  --border-light: rgba(148, 163, 184, 0.1);
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow: 0 8px 32px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 20px 60px rgba(15, 23, 42, 0.08);

  /* Accent colors */
  --accent: #22C55E;
  --accent-soft: rgba(34, 197, 94, 0.12);
  --accent-glow: rgba(34, 197, 94, 0.25);
  --orange: #FB923C;
  --orange-soft: rgba(251, 146, 60, 0.12);
  --red: #EF4444;
  --red-muted: #F87171;
  --red-soft: rgba(239, 68, 68, 0.10);
  --blue: #3B82F6;
  --blue-soft: rgba(59, 130, 246, 0.10);
  --amber: #F59E0B;
  --amber-soft: rgba(245, 158, 11, 0.10);
  --green-deep: #16A34A;
  --purple: #8B5CF6;
  --teal: #14B8A6;

  /* Typography */
  --font: 'Inter', 'Noto Sans KR', 'Noto Sans SC', system-ui, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', 'Consolas', monospace;

  /* Type scale (7 levels) */
  --fs-3xs: 0.5625rem;  /* 9px — micro annotations */
  --fs-2xs: 0.625rem;   /* 10px — unit labels, footnotes */
  --fs-xs: 0.6875rem;   /* 11px — secondary info, chart ticks */
  --fs-sm: 0.75rem;     /* 12px — standard small text, body */
  --fs-base: 0.8125rem; /* 13px — emphasis, section text */
  --fs-md: 0.875rem;    /* 14px — section titles */
  --fs-lg: 1rem;        /* 16px — card headings */
  --fs-xl: 1.125rem;    /* 18px — hero numbers */

  --radius: 20px;
  --radius-sm: 12px;
  --radius-xs: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --bg: #0B1120;
  --bg-glass: rgba(15, 23, 42, 0.6);
  --bg-glass-solid: rgba(15, 23, 42, 0.88);
  --bg-card: rgba(30, 41, 59, 0.65);
  --text: #E2E8F0;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --border: rgba(148, 163, 184, 0.12);
  --border-light: rgba(148, 163, 184, 0.06);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.3);
  --accent-soft: rgba(34, 197, 94, 0.16);
  --accent-glow: rgba(34, 197, 94, 0.3);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
}

/* Subtle gradient ambiance */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(34, 197, 94, 0.04) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 80%, rgba(59, 130, 246, 0.03) 0%, transparent 70%);
  pointer-events: none;
}
[data-theme="dark"] body::before {
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(34, 197, 94, 0.06) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 80%, rgba(59, 130, 246, 0.04) 0%, transparent 70%);
}

/* ═══ FERMENTATION BUBBLES ═══ */
.bubbles-container {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}
.bubble {
  position: absolute;
  bottom: -20px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.25));
  border: 1px solid rgba(255, 255, 255, 0.45);
  animation: bubble-rise linear infinite;
  will-change: transform, opacity;
}
[data-theme="dark"] .bubble {
  background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.25), rgba(255, 255, 255, 0.08));
  border-color: rgba(255, 255, 255, 0.15);
}
@keyframes bubble-rise {
  0% { transform: translateY(0) translateX(0) scale(0.3); opacity: 0; }
  5% { transform: translateY(0) translateX(0) scale(0.3); opacity: 0.5; }
  15% { transform: translateY(-5vh) translateX(3px) scale(1); opacity: 0.7; }
  25% { transform: translateY(-15vh) translateX(8px) scale(1.15); opacity: 0.65; }
  60% { transform: translateY(-55vh) translateX(18px) scale(1.1); opacity: 0.5; }
  100% { transform: translateY(-110vh) translateX(-10px) scale(0.9); opacity: 0; }
}

/* ═══ FROSTED GEOMETRY DECOR ═══ */
.geo-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}
.geo {
  position: absolute;
  filter: blur(12px);
}
.geo--circle { border-radius: 50%; }
.geo--square { border-radius: 12px; }
/* Red-orange family */
.geo--ro { background: rgba(235, 120, 60, 0.10); border: none; }
/* Yellow-green family */
.geo--yg { background: rgba(140, 190, 50, 0.10); border: none; }
[data-theme="dark"] .geo--ro { background: rgba(235, 120, 60, 0.07); }
[data-theme="dark"] .geo--yg { background: rgba(140, 190, 50, 0.07); }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ═══ HEADER ═══ */
.header {
  position: sticky; top: 0; z-index: 100;
  background: var(--bg-glass-solid);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: 960px; margin: 0 auto;
  padding: 8px 20px;
  display: flex; align-items: center; justify-content: space-between;
}
.header-brand {
  display: flex; align-items: center; gap: 8px;
}
.logo-icon {
  width: 28px; height: 28px;
  flex-shrink: 0;
}
.brand-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.brand-name {
  font-size: var(--fs-md); font-weight: 700;
  letter-spacing: -0.02em;
}
.brand-sub {
  font-size: var(--fs-2xs);
  color: var(--text-muted);
  letter-spacing: 0;
  line-height: 1.3;
  max-width: 320px;
}
.header-controls {
  display: flex; align-items: center; gap: 6px;
}

/* Language switch */
.lang-switch {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
}
.lang-btn {
  background: none; border: none;
  padding: 4px 10px; font-size: var(--fs-xs);
  font-family: var(--font); font-weight: 600;
  color: var(--text-muted); cursor: pointer;
  transition: all var(--transition);
}
.lang-btn:hover { color: var(--text); }
.lang-btn.active {
  background: var(--accent);
  color: #fff;
}

/* Unit switch (header) */
.unit-switch {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-glass);
}
.unit-btn {
  background: none; border: none;
  padding: 4px 8px; font-size: var(--fs-xs);
  font-family: var(--mono); font-weight: 600;
  color: var(--text-muted); cursor: pointer;
  transition: all var(--transition);
  min-width: 32px; text-align: center;
}
.unit-btn:hover { color: var(--text); }

/* Recipe type switch */
.recipe-type-switch {
  display: flex; gap: 4px; margin-bottom: 12px; justify-content: center;
}
.recipe-type-btn {
  background: none; border: 1px solid var(--border);
  padding: 4px 12px; font-size: var(--fs-xs);
  font-family: var(--font); font-weight: 600;
  color: var(--text-muted); cursor: pointer;
  border-radius: var(--radius-xs);
  transition: all var(--transition);
}
.recipe-type-btn:hover { color: var(--text); border-color: var(--text-muted); }
.recipe-type-btn.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

/* Theme & Expert buttons */
.btn-icon {
  width: 32px; height: 32px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-glass);
  color: var(--text-muted);
  font-size: var(--fs-md);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.btn-icon:hover { color: var(--text); border-color: var(--text-muted); }
.theme-icon-dark { display: none; }
[data-theme="dark"] .theme-icon-light { display: none; }
[data-theme="dark"] .theme-icon-dark { display: inline; }

.btn-expert {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-glass);
  color: var(--text-muted);
  font-size: var(--fs-xs); font-weight: 600;
  font-family: var(--font);
  padding: 4px 10px;
  cursor: pointer;
  display: flex; align-items: center; gap: 4px;
  transition: all var(--transition);
}
.btn-expert:hover { color: var(--text); border-color: var(--text-muted); }
.btn-expert[aria-pressed="true"] {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.expert-icon { font-size: var(--fs-md); }

/* ═══ MAIN LAYOUT ═══ */
.main-layout {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ═══ TWO-COLUMN GRID ═══ */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  align-items: start;
}

/* LEFT COLUMN: Recipe Calculator */
.col-left {
  padding: 14px 16px;
  position: sticky;
  top: 60px;
}
.col-title {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--text);
  margin: 0 0 10px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  text-align: center;
}
.rc-section {
  padding: 8px 0;
  border-bottom: 1px solid var(--border-light);
}
.rc-section:last-of-type { border-bottom: none; }
.rc-label {
  font-size: var(--fs-2xs);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
  display: block;
  letter-spacing: 0.01em;
}
.rc-weight-row {
  display: flex;
  align-items: center;
  gap: 6px;
}
.rc-note {
  padding: 4px 0;
  font-size: var(--fs-2xs);
  color: var(--text-muted);
  font-style: italic;
}
.rc-recipe-link {
  display: inline-block;
  font-size: var(--fs-xs);
  color: var(--accent);
  text-decoration: none;
  padding: 4px 10px;
  border: 1px solid var(--accent-soft);
  border-radius: var(--radius-xs);
  transition: background var(--transition);
  margin-top: 8px;
  align-self: center;
}
.rc-recipe-link::after {
  content: ' ↓';
  font-size: var(--fs-xs);
  opacity: 0.6;
}
.rc-recipe-link:hover {
  background: var(--accent-soft);
  text-decoration: none;
}
.rc-recipe-link:hover::after {
  opacity: 1;
}

/* Button at bottom of card */
.col-card .btn-calc-start {
  margin-top: auto;
  padding-top: 8px;
}
.col-card .tl-header {
  margin-bottom: 2px;
}

/* ═══ EQUAL-HEIGHT COLUMN CARDS ═══ */
.two-col-equal {
  align-items: stretch;
}
.col-card {
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
}
.col-card .col-title { margin-bottom: 8px; }

/* RIGHT COLUMN: Fermentation Simulator */
.col-right {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.pflow-card {
  padding: 10px 14px;
}
.input-card {
  padding: 14px 16px;
}

/* ═══ FIELD LIST SYSTEM (numbered items) ═══ */
.field-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  flex: 1;
}
.field-item {
  display: flex;
  gap: 8px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-light);
  align-items: flex-start;
}
.field-item:last-of-type { border-bottom: none; }
.field-item-output { flex: 1; }
.field-marker {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--mono);
  font-size: var(--fs-3xs);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.field-body {
  flex: 1;
  min-width: 0;
}
.field-label {
  display: block;
  font-size: var(--fs-2xs);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
}
.field-input-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.field-unit {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  font-weight: 600;
}

/* Unified green input boxes — all sizes */
.input-num {
  border: 1.5px solid var(--accent);
  border-radius: 6px;
  font-family: var(--mono);
  font-size: var(--fs-sm);
  font-weight: 700;
  text-align: center;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 3px 6px;
  width: 60px;
}
.input-num:focus { outline: none; box-shadow: 0 0 0 2px var(--accent-glow); }
.input-num-sm { width: 56px; font-size: var(--fs-xs); }
.input-num-xs { width: 46px; font-size: var(--fs-xs); }
/* Hide number spinners */
.input-num::-webkit-outer-spin-button,
.input-num::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.input-num { -moz-appearance: textfield; }

/* Field hint (small description) */
.field-hint {
  display: block;
  font-size: var(--fs-3xs);
  color: var(--text-muted);
  line-height: 1.35;
  margin-bottom: 4px;
}
.field-sep {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin: 0 2px;
}
.starter-input-row {
  gap: 4px;
}

/* Manual sub-fields (nested under fermentation method) */
.manual-fields {
  margin-top: 8px;
  padding: 8px 0 0;
  border-top: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.manual-sub {
  padding-left: 0;
}
.manual-sub .field-label {
  font-size: var(--fs-2xs);
  margin-bottom: 4px;
}

/* Anti-layout-shift: info slot */
.info-slot {
  min-height: 20px;
  margin-top: 4px;
}
.info-slot-inner {
  font-size: var(--fs-2xs);
  color: var(--text-muted);
  font-family: var(--mono);
  transition: opacity 0.25s ease;
}
.info-slot-inner.hidden {
  opacity: 0;
  visibility: hidden;
}
.info-slot-inner.visible {
  opacity: 1;
  visibility: visible;
}

/* Responsive: collapse to single column */
@media (max-width: 768px) {
  .two-col {
    grid-template-columns: 1fr;
  }
  .col-left {
    position: static;
  }
}

/* ═══ HERO SPLIT (legacy compat) ═══ */
.hero-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  align-items: start;
}
.hero-left {
  padding: 20px;
}
.hero-right {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.hero-right .glass-card { padding: 16px; }
.dash-unified { padding: 14px 16px 12px; }
.dash-header { padding: 12px 16px; }
.dash-heading {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--text);
  margin: 0 0 8px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.dash-hero-row {
  display: flex;
  align-items: stretch;
  gap: 0;
}
.dash-hero-stat {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 6px 8px;
}
.dash-hero-label {
  font-size: var(--fs-2xs);
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.dash-hero-num {
  font-family: var(--mono);
  font-size: var(--fs-xl);
  font-weight: 800;
  color: var(--text);
  line-height: 1;
}
.dash-hero-accent .dash-hero-num {
  color: var(--accent);
  font-size: var(--fs-xl);
}
.dash-hero-status {
  font-family: var(--mono);
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--text);
}
.dash-hero-divider {
  width: 1px;
  background: var(--border-light);
  align-self: stretch;
}
.dash-milestones-card { padding: 14px 20px; }
/* Insight panel */
.dash-insights { padding: 12px 16px; }
.insight-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 0;
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: 1.4;
}
.insight-row + .insight-row { border-top: 1px solid var(--border-light); }
.insight-icon { font-size: var(--fs-md); flex-shrink: 0; }
.insight-text { flex: 1; }
/* Process flow inline in hero-left */
.pflow-inline {
  display: flex;
  align-items: flex-start;
  gap: 0;
  padding: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* ═══ TIMELINE ═══ */
.tl-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.section-title {
  font-size: var(--fs-lg);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
}
.btn-unit-toggle {
  font-size: var(--fs-xs);
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--bg-glass);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}
.btn-unit-toggle:hover { border-color: var(--accent); color: var(--accent); }

.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.tl-step {
  display: flex;
  gap: 12px;
  position: relative;
  padding-bottom: 16px;
  min-height: 40px;
}
.tl-step-last { padding-bottom: 0; }

.tl-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-3xs);
  font-weight: 800;
  color: #fff;
  z-index: 1;
}
.tl-dot-done { background: var(--accent); }
.tl-dot-warm { background: var(--orange); }
.tl-dot-cold { background: var(--blue); }
.tl-dot-peak { background: var(--accent); box-shadow: 0 0 8px var(--accent-glow); }
.tl-dot-warn { background: var(--amber); }
.tl-dot-end  { background: var(--text-muted); }
.tl-dot::after {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
}
.tl-dot-peak::after { width: 8px; height: 8px; }

.tl-line {
  position: absolute;
  left: 9px;
  top: 22px;
  bottom: 0;
  width: 2px;
  background: var(--border);
}
.tl-step-last .tl-line { display: none; }

.tl-body {
  flex: 1;
  min-width: 0;
}
.tl-label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}
.tl-label-auto {
  color: var(--text-secondary);
  font-weight: 500;
}
.tl-input-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.tl-input {
  width: 64px;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--bg-glass);
  color: var(--text);
  font-size: var(--fs-base);
  font-weight: 600;
  font-family: var(--mono);
  text-align: center;
}
.tl-input:focus { border-color: var(--accent); outline: none; }
.tl-unit-lbl {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin-right: 6px;
}
.input-datetime {
  font-size: var(--fs-sm);
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--bg-glass);
  color: var(--text);
  font-family: inherit;
  max-width: 220px;
}
.input-datetime:focus { border-color: var(--accent); outline: none; }
.tl-sub-label {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  margin-bottom: 2px;
}
.tl-date-row { gap: 3px; align-items: flex-end; }
.tl-date-field { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.tl-date-hint {
  font-size: var(--fs-3xs); color: var(--text-muted); letter-spacing: 0.02em;
}
.tl-input-year { width: 68px; }
.tl-input-md { width: 52px; }
/* Hide number spinners on small inputs */
.tl-input-md::-webkit-outer-spin-button,
.tl-input-md::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.tl-input-md { -moz-appearance: textfield; }
.tl-date-sep {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  line-height: 1;
  padding-bottom: 6px;
}
.tl-starter-row {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--border-light);
}
.tl-starter-compact { max-width: 280px; }
.tl-starter-compact .slider-flat { flex: 1; min-width: 0; }
/* Inline calculator in timeline */
.tl-calc-inline {
  margin: 8px 0;
  padding: 10px 12px;
  background: var(--bg-glass);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xs);
}
.tl-calc-inline .calc-row {
  margin-bottom: 6px;
  padding-bottom: 6px;
}
.tl-calc-inline .input-num {
  width: 56px;
  padding: 3px 6px;
  font-size: var(--fs-sm);
}
.tl-dot-prep {
  background: var(--text-muted);
  border-color: var(--text-muted);
}
.tl-nav-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.tl-nav-link {
  font-size: var(--fs-sm);
  color: var(--accent);
  text-decoration: none;
  padding: 3px 10px;
  border: 1px solid var(--accent-soft);
  border-radius: var(--radius-xs);
  transition: background var(--transition);
}
.tl-nav-link:hover {
  background: var(--accent-soft);
}
.quick-presets.tl-presets {
  margin-top: 4px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}
.tl-presets .preset-chip {
  text-align: center;
  border-radius: 6px;
  padding: 5px 4px;
  font-size: var(--fs-2xs);
}

.tl-note {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  margin-top: 3px;
  font-family: var(--mono);
  min-height: 18px;
}
.tl-elapsed {
  font-size: var(--fs-xs);
  color: var(--accent);
  font-weight: 600;
  margin-top: 2px;
  min-height: 18px;
}

.tl-step-result .tl-body {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}
.tl-result {
  font-size: var(--fs-md);
  font-weight: 700;
  color: var(--text);
  font-family: var(--mono);
}
.tl-result-date {
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.tl-divider {
  height: 1px;
  background: var(--border);
  margin: 8px 0 12px 32px;
}

.tl-btn-add {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  background: none;
  border: 1px dashed var(--border);
  border-radius: var(--radius-xs);
  padding: 5px 12px;
  margin-left: 0;
  margin-bottom: 8px;
  cursor: pointer;
  transition: all var(--transition);
}
.tl-btn-add:hover { color: var(--accent); border-color: var(--accent); }

/* Acceleration rows */
.accel-row {
  display: flex;
  gap: 6px;
  align-items: center;
  padding: 6px 0 6px 0;
  font-size: var(--fs-sm);
}
.accel-row .tl-input { width: 52px; }

/* ═══ FORM GRID (sectioned input layout) ═══ */
.form-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.fg-section {
  padding: 12px 0;
  border-bottom: 1px solid var(--border-light);
}
.fg-section:last-child { border-bottom: none; }
.fg-label {
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

/* Section A: Recipe calculator (collapsible) */
.fg-section-calc { padding: 0; border-bottom: 1px solid var(--border-light); }
.fg-section-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 0;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-sm);
  color: var(--text-secondary);
}
.fg-section-toggle::-webkit-details-marker { display: none; }
.fg-section-title {
  font-weight: 600;
  color: var(--text-secondary);
}
.fg-section-val {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--accent);
  font-size: var(--fs-sm);
}
.fg-section-body {
  padding: 0 0 12px;
}
.fg-calc-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

/* Section B: Batch setup — 2-column grid */
.fg-batch-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 24px;
  align-items: start;
}
.fg-batch-date { min-width: 0; }
.fg-batch-right {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.fg-starter-block { }
.fg-starter-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 2px;
}
.fg-starter-row .slider-flat {
  flex: 1;
  min-width: 0;
  max-width: 160px;
}
.fg-preset-block { }

/* Section C: Temperature plan — side by side */
.fg-temp-grid {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.fg-temp-item {
  flex: 1 1 0;
  min-width: 140px;
}
.fg-temp-label {
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
  display: block;
}

/* Responsive */
@media (max-width: 520px) {
  .fg-batch-grid { grid-template-columns: 1fr; }
  .fg-temp-grid { flex-direction: column; gap: 10px; }
}
.accel-remove {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  cursor: pointer;
  background: none;
  border: none;
  padding: 2px 6px;
}
.accel-remove:hover { color: var(--red); }

/* Milestone rows in dashboard */
.dash-milestones {
  padding-top: 0;
}
.ms-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 0;
  font-size: var(--fs-sm);
}
.ms-row + .ms-row { border-top: 1px solid var(--border-light); }
.ms-dot {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
}
.ms-dot-safe    { background: var(--blue); }
.ms-dot-peak    { background: var(--accent); box-shadow: 0 0 6px var(--accent-glow); }
.ms-dot-ph      { background: var(--blue); }
.ms-dot-warn    { background: var(--amber); }
.ms-dot-end     { background: var(--text-muted); }
.ms-dot-starter { background: var(--purple); }
.ms-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.ms-label { color: var(--text-secondary); font-size: var(--fs-sm); }
.ms-when {
  font-family: var(--mono);
  font-size: var(--fs-xs); color: var(--text-muted);
  line-height: 1.4;
}
.ms-desc {
  font-size: var(--fs-xs);
  color: var(--text-secondary);
  line-height: 1.4;
}
.ms-detail {
  font-size: var(--fs-xs);
  color: var(--text-muted);
}
.ms-advice {
  font-style: italic;
  color: var(--purple);
}
.ms-val {
  font-weight: 700; font-family: var(--mono);
  font-size: var(--fs-base); color: var(--text);
}
.ms-date { font-size: var(--fs-xs); color: var(--text-muted); }

.dash-presets { padding: 12px 16px; }

/* ═══ START CALCULATION BUTTON ═══ */
.btn-calc-start {
  display: block;
  width: 100%;
  margin-top: 16px;
  padding: 14px 24px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #fff;
  font-family: var(--font);
  font-size: var(--fs-lg);
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition), transform 0.15s ease;
  box-shadow: 0 4px 16px var(--accent-glow);
}
.btn-calc-start:hover {
  background: var(--green-deep);
  box-shadow: 0 6px 24px var(--accent-glow);
  transform: translateY(-1px);
}
.btn-calc-start:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px var(--accent-glow);
}

/* ═══ MICROBE CARD "NOW" ROW ═══ */
.mc-now {
  opacity: 0.7;
  border-top: 1px dashed var(--border-light);
  padding-top: 4px;
  margin-top: 4px;
}
.mc-now .mc-label { font-style: italic; }
.microbe-card.active-now .mc-now { opacity: 1; font-weight: 600; }

/* ═══ MAIN CHART CARD (decision + science merged) ═══ */
.main-chart-card {
  padding: 24px;
}
.flavor-score-label {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  margin-bottom: 4px;
  line-height: 1.5;
  text-align: left;
  padding-left: 44px;
}
.sub-chart-hero .sub-chart-canvas {
  height: 280px;
}
/* Inline collapsible inside same card (no extra border/shadow) */
.collapse-inline {
  border-top: 1px solid var(--border-light);
  margin-top: 16px;
  padding: 0;
}
.collapse-inline .collapse-body {
  padding: 0 0 8px;
}

/* ═══ ZONE 1: DECISION (legacy compat) ═══ */
.decision-zone {
  padding: 24px;
}
.dz-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}
.dz-state-group {
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.dz-state {
  font-family: var(--mono);
  font-size: var(--fs-xl);
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}
.dz-state.state-safe { color: var(--accent); }
.dz-state.state-best { color: var(--accent); }
.dz-state.state-warn { color: var(--amber); }
.dz-state.state-risk { color: var(--text-muted); }
.dz-elapsed {
  font-family: var(--mono);
  font-size: var(--fs-sm);
  color: var(--text-muted);
}
.dz-next {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  font-weight: 500;
}
.dz-chart {
  height: 200px;
}

/* ═══ ZONE 2: TIMELINE ═══ */
.timeline-zone {
  padding: 20px 24px;
}
.tz-track {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-top: 12px;
}
.tz-bar {
  position: absolute;
  top: 17px;
  left: 12px;
  right: 12px;
  height: 2px;
  background: var(--border);
}
.tz-event {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  z-index: 1;
  flex: 0 0 auto;
  min-width: 60px;
}
.tz-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--text-muted);
  border: 2px solid var(--bg);
  box-shadow: 0 0 0 1px var(--border);
  transition: all var(--transition);
}
.tz-dot-safe { background: var(--accent); }
.tz-dot-best { background: var(--accent); box-shadow: 0 0 0 1px var(--accent), 0 0 8px var(--accent-glow); }
.tz-dot-sour { background: var(--amber); }
.tz-dot-starter { background: var(--text-muted); }
.tz-event-best .tz-dot { width: 14px; height: 14px; }
.tz-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.tz-label {
  font-size: var(--fs-2xs);
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.3;
  max-width: 90px;
}
.tz-time {
  font-family: var(--mono);
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--text);
}
.tz-event-best .tz-label { color: var(--accent); font-weight: 600; }
.tz-event-best .tz-time { color: var(--accent); }
/* Dim past events */
.tz-event.past .tz-dot { opacity: 0.4; }
.tz-event.past .tz-label,
.tz-event.past .tz-time { opacity: 0.4; }

/* ═══ UNIFIED COLLAPSIBLE SECTIONS ═══ */
.collapse-section {
  padding: 0;
}
.collapse-toggle {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 14px 20px 8px;
  cursor: pointer;
  list-style: none;
  transition: color var(--transition);
}
.collapse-toggle::-webkit-details-marker { display: none; }
.collapse-label {
  font-family: var(--font);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-secondary);
  transition: color var(--transition);
}
.collapse-toggle:hover .collapse-label { color: var(--text); }
.collapse-arrow {
  display: block;
  margin-top: 2px;
  font-size: 14px;
  line-height: 1;
  color: var(--text-muted);
  transition: transform var(--transition), color var(--transition);
}
.collapse-toggle:hover .collapse-arrow { color: var(--accent); }
.collapse-section[open] .collapse-arrow,
.collapse-inline[open] .collapse-arrow {
  transform: rotate(180deg);
}
.collapse-body {
  padding: 0 20px 16px;
}

/* ═══ SHARED CHART STYLES ═══ */
.sub-chart {
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 12px;
  margin-bottom: 12px;
}
.sub-chart-last { border-bottom: none; padding-bottom: 0; margin-bottom: 0; }
.sub-chart-label {
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-bottom: 4px;
  text-align: center;
}
.label-ph { color: var(--blue); }
.label-acid { color: var(--text-muted); }
#sub-chart-nitrite .sub-chart-label { color: var(--amber); }
.sub-chart-canvas {
  position: relative;
  width: 100%;
  height: 140px;
}
.sub-chart-canvas canvas {
  display: block;
}

/* Nitrite inline summary */
.nitrite-inline {
  padding: 6px 4px 0;
  font-size: var(--fs-xs);
}
.ni-bar {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: var(--fs-xs);
  margin-bottom: 4px;
}
.ni-bar.safe { background: var(--accent-soft); }
.ni-bar.warning { background: var(--amber-soft); }
.ni-bar.danger { background: var(--red-soft); }
.ni-icon { font-size: var(--fs-sm); }
.ni-level { font-family: var(--mono); font-weight: 700; font-size: var(--fs-xs); color: var(--amber); }
.ni-status {
  font-weight: 700; font-size: var(--fs-3xs);
  text-transform: uppercase;
  padding: 1px 6px;
  border-radius: 999px;
}
.ni-bar.safe .ni-status { background: rgba(34,197,94,0.15); color: var(--accent); }
.ni-bar.warning .ni-status { background: rgba(245,158,11,0.15); color: #B45309; }
.ni-bar.danger .ni-status { background: rgba(239,68,68,0.12); color: var(--red); }
[data-theme="dark"] .ni-bar.warning .ni-status { color: var(--amber); }
.ni-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  color: var(--text-muted);
}
.ni-metric { display: inline-flex; gap: 4px; align-items: baseline; }
.ni-label { font-size: var(--fs-2xs); color: var(--text-muted); }
.ni-val { font-family: var(--mono); font-size: var(--fs-xs); font-weight: 600; color: var(--amber); }

/* Microbe legend */
.microbe-legend {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px 4px 4px;
  font-size: var(--fs-xs);
}
.ml-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border-radius: var(--radius-xs);
  border-left: 3px solid transparent;
  transition: all var(--transition);
}
.ml-item.active { border-left-color: var(--accent); background: var(--accent-soft, rgba(34,197,94,0.06)); }
.ml-item.active-now { border-left-color: var(--blue); background: rgba(59,130,246,0.06); }
.ml-item.active.active-now { border-left-color: var(--accent); background: var(--accent-soft, rgba(34,197,94,0.08)); }
.ml-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.ml-info { display: flex; flex-direction: column; min-width: 0; }
.ml-name { font-weight: 600; color: var(--text); white-space: nowrap; }
.ml-sakei .ml-name { color: var(--blue); }
.ml-mesen .ml-name { color: var(--accent); }
.ml-plant .ml-name { color: var(--purple); }
.ml-role { font-size: var(--fs-2xs); color: var(--text-muted); }
.ml-time { color: var(--text-muted); font-family: var(--mono); font-size: var(--fs-2xs); }
.ml-note { color: var(--text-secondary); font-size: var(--fs-2xs); flex: 1; }
.ml-pct { font-family: var(--mono); font-size: var(--fs-2xs); color: var(--text-muted); white-space: nowrap; }
.ml-pct-now { color: var(--blue); font-weight: 600; }
.ml-pct-l { font-family: var(--font); font-size: var(--fs-3xs); color: var(--text-muted); margin-right: 2px; }

@media (max-width: 640px) {
  .dz-header { flex-direction: column; gap: 4px; }
  .tz-track { flex-wrap: wrap; gap: 12px; justify-content: center; }
  .tz-bar { display: none; }

  .microbe-legend { font-size: var(--fs-2xs); gap: 4px; padding: 6px 2px 2px; }
  .ml-item {
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 2px 6px;
    padding: 6px 8px;
  }
  .ml-info { flex-basis: calc(100% - 20px); }
  .ml-name { white-space: normal; font-size: var(--fs-2xs); }
  .ml-role { font-size: var(--fs-3xs); }
  .ml-time { font-size: var(--fs-3xs); }
  .ml-note { font-size: var(--fs-3xs); flex-basis: 100%; order: 10; margin-top: 2px; }
  .ml-pct { font-size: var(--fs-3xs); }
  .ml-pct-l { font-size: 7px; }
}

/* ═══ GLASSMORPHISM BASE ═══ */
.glass-card {
  position: relative;
  z-index: 1;
  background: var(--bg-card);
  backdrop-filter: blur(40px) saturate(1.6);
  -webkit-backdrop-filter: blur(40px) saturate(1.6);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition), transform var(--transition);
}

/* ═══════════════════════════
   L1: THE NAVIGATOR (legacy)
   ═══════════════════════════ */
.layer-nav {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.layer { /* base layer compat */ }

/* — Dashboard Gauge — */
.dash {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 32px;
}
.dash-top {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}
.dash-right-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.dash-right-col .dash-status {
  font-size: var(--fs-md);
  text-align: left;
}
.dash-stats {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 6px;
}
.dash-stats .dash-kv {
  padding: 6px 8px;
  text-align: center;
  align-items: center;
}
.dash-stats .dash-value {
  font-size: var(--fs-md);
  white-space: nowrap;
}
.dash-main {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.dash-ring {
  position: relative;
  width: 120px; height: 120px;
}
.dash-svg {
  width: 100%; height: 100%;
  transform: rotate(-90deg);
}
.dash-track {
  fill: none;
  stroke: var(--border);
  stroke-width: 6;
}
.dash-fill {
  fill: none;
  stroke: var(--accent);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-dasharray: 326.73;
  stroke-dashoffset: 326.73;
  transition: stroke-dashoffset 1s cubic-bezier(0.4, 0, 0.2, 1),
              stroke 0.5s ease;
  filter: drop-shadow(0 0 6px var(--accent-glow));
}
.dash-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.dash-day {
  font-family: var(--mono);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
}
.dash-unit {
  font-size: var(--fs-2xs);
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.dash-status {
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--accent);
  text-align: center;
  min-height: 1.2em;
  transition: color var(--transition);
}
.dash-status.status-improving { color: var(--accent); }
.dash-status.status-peak { color: var(--accent); }
.dash-status.status-declining { color: var(--orange); }
.dash-status.status-over { color: var(--red); }

.dash-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  flex: 1;
}
.dash-kv {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 14px;
  background: var(--bg-glass);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
}
.dash-label {
  font-size: var(--fs-2xs);
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.dash-value {
  font-family: var(--mono);
  font-size: var(--fs-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.dash-accent {
  color: var(--accent);
}

/* — Flavor Curve Card — */
.nav-chart-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.nav-chart-canvas {
  position: relative;
  height: 220px;
  padding: 12px 16px;
}
.nav-chart-canvas canvas {
  width: 100% !important;
  height: 100% !important;
}

/* — Phase Strip — */
.phase-strip {
  display: flex;
  position: relative;
  height: 36px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.phase-seg {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition);
}
.phase-blue { background: linear-gradient(135deg, #3B82F6, #60A5FA); color: #fff; }
.phase-green { background: linear-gradient(135deg, #22C55E, #4ADE80); color: #fff; }
.phase-amber { background: linear-gradient(135deg, #F59E0B, #FBBF24); color: #fff; }
.phase-label {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.02em;
}
.phase-marker {
  position: absolute;
  top: -4px; width: 3px; height: calc(100% + 8px);
  background: var(--text);
  border-radius: 2px;
  transition: left 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
  box-shadow: 0 0 8px rgba(0,0,0,0.3);
  z-index: 2; left: 0;
}
.phase-marker::before {
  content: '';
  position: absolute; top: -4px; left: -5px;
  width: 13px; height: 13px;
  background: var(--accent);
  border-radius: 50%;
  border: 2.5px solid var(--bg);
  box-shadow: 0 0 8px var(--accent-glow);
}

/* — Status Panel — */
.status-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  box-shadow: var(--shadow-sm);
}
.status-line {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--fs-base);
  font-weight: 500;
  color: var(--text-secondary);
  animation: fadeSlideIn 0.4s ease both;
}
.status-line:nth-child(2) { animation-delay: 0.08s; }
.status-line:nth-child(3) { animation-delay: 0.16s; }
.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dot-green { background: var(--accent); box-shadow: 0 0 6px var(--accent-glow); }
.dot-blue { background: var(--blue); box-shadow: 0 0 6px rgba(59,130,246,0.25); }
.dot-amber { background: var(--orange); box-shadow: 0 0 6px rgba(251,146,60,0.25); }
.dot-red { background: var(--red); box-shadow: 0 0 6px rgba(239,68,68,0.25); }

.status-text {
  flex: 1;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* — Quick Bar (presets + starter) — */
.quick-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.quick-presets {
  display: flex;
  gap: 6px;
}
.preset-chip {
  border: 1px solid var(--border);
  background: var(--bg-glass);
  color: var(--text-secondary);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: var(--fs-xs);
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
}
.preset-chip:hover { border-color: var(--accent); color: var(--text); }
.preset-chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
/* Legacy compat */
.preset-btn { display: none; }

.quick-starter {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 180px;
}
.quick-label {
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.quick-val {
  font-family: var(--mono);
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--accent);
  min-width: 32px;
  text-align: right;
}

/* Flat slider */
.slider-flat {
  -webkit-appearance: none;
  appearance: none;
  flex: 1;
  height: 4px;
  border-radius: 2px;
  background: var(--border);
  outline: none;
  cursor: pointer;
  transition: background var(--transition);
}
.slider-flat::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--accent);
  border: 2.5px solid var(--bg);
  box-shadow: 0 2px 8px rgba(34, 197, 94, 0.3);
  cursor: grab;
}
.slider-flat::-moz-range-thumb {
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--accent);
  border: 2.5px solid var(--bg);
}

/* — Why button — */
.btn-why {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 12px;
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: var(--fs-base);
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}
.btn-why:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}
.btn-why.expanded .why-arrow {
  transform: rotate(180deg);
}
.why-arrow {
  transition: transform var(--transition);
  font-size: var(--fs-md);
}

/* ═══════════════════════════
   L2: EXPLAIN
   ═══════════════════════════ */
.layer-detail {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 8px;
}
.detail-card { padding: 16px 20px; }

.layer-explain {
  display: flex;
  flex-direction: column;
  gap: 12px;
  animation: layerIn 0.4s ease both;
}

@keyframes layerIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Explain card */
.explain-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-md);
  font-weight: 700;
  margin-bottom: 12px;
}
.explain-lines {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.explain-line {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-glass);
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-light);
  font-size: var(--fs-sm);
  animation: fadeSlideIn 0.3s ease both;
}
.explain-line:nth-child(2) { animation-delay: 0.06s; }
.explain-line:nth-child(3) { animation-delay: 0.12s; }
.explain-cause {
  font-weight: 600;
  color: var(--text);
}
.explain-arrow {
  color: var(--text-muted);
  font-size: var(--fs-md);
  flex-shrink: 0;
}
.explain-effect {
  color: var(--text-secondary);
}

/* Score breakdown */
.score-breakdown {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.score-bar-row {
  display: grid;
  grid-template-columns: 1fr 100px 36px 32px;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-sm);
}
.score-bar-label {
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.score-bar-track {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}
.score-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.4s ease;
}
.score-bar-blue { background: var(--blue); }
.score-bar-orange { background: var(--orange); }
.score-bar-green { background: var(--accent); }
.score-bar-val {
  font-weight: 600;
  color: var(--text);
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.score-bar-weight {
  color: var(--text-muted);
  font-size: var(--fs-xs);
  text-align: right;
}

/* Extend flavor advice */
.extend-advice {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.extend-tip {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg-glass);
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-light);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: 1.45;
  animation: fadeSlideIn 0.3s ease both;
}
.extend-tip:nth-child(2) { animation-delay: 0.06s; }
.extend-tip:nth-child(3) { animation-delay: 0.08s; }
.extend-tip-icon {
  flex-shrink: 0;
  font-size: var(--fs-md);
  line-height: 1.5;
}
.extend-tip-primary {
  border-left: 2px solid var(--accent);
  background: var(--accent-soft);
}

/* Controls card */
.controls-card { overflow: visible; }
.controls-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.controls-header .explain-title { margin-bottom: 0; }
.batch-inline {
  display: flex;
  align-items: center;
  gap: 8px;
}
.batch-label {
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
}
.input-date {
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  font-family: var(--mono);
  font-size: var(--fs-sm);
  background: var(--bg-glass);
  color: var(--text);
}
.batch-elapsed {
  font-family: var(--mono);
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--accent);
}

/* Stages grid */
.stages-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 32px;
  gap: 4px;
  margin: 8px 0 4px;
}
.sg-head {
  font-size: var(--fs-2xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-align: center;
}
.stage-row {
  display: grid;
  grid-template-columns: 22px 1fr auto 1fr auto auto;
  gap: 4px;
  align-items: center;
  padding: 4px 0;
  border-bottom: 1px solid var(--border-light);
}
.stage-row:last-child { border-bottom: none; }
.stage-row.stage-frozen {
  background: var(--blue-soft);
  border-radius: var(--radius-xs);
  grid-template-columns: 22px 1fr auto auto 1fr auto auto;
}
[data-theme="dark"] .stage-row.stage-frozen { background: rgba(59,130,246,0.12); }
.stage-num {
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--accent); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: var(--fs-2xs); font-weight: 700;
}
.stage-input {
  width: 100%; padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  font-family: var(--mono); font-size: var(--fs-sm);
  background: var(--bg-glass); color: var(--text);
  text-align: center;
}
.stage-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.stage-unit { font-size: var(--fs-2xs); color: var(--text-muted); }
.stage-freeze-warn { font-size: var(--fs-sm); cursor: help; }
.stage-temp { border-color: var(--border); }
.stage-frozen .stage-temp { border-color: var(--blue); color: var(--blue); }
.btn-remove-stage {
  background: none; border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  width: 22px; height: 22px; cursor: pointer;
  color: var(--text-muted); font-size: var(--fs-md);
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.btn-remove-stage:hover { border-color: var(--red); color: var(--red); }
.btn-add-stage-mini {
  background: none; border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  width: 22px; height: 22px; cursor: pointer;
  color: var(--text-muted); font-size: var(--fs-md);
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
  margin-top: 4px;
}
.btn-add-stage-mini:hover { border-color: var(--accent); color: var(--accent); }
.stage-helper {
  margin-top: 6px;
  font-size: var(--fs-2xs);
  color: var(--text-muted);
  line-height: 1.5;
}

/* Chart toggles */
.chart-toggles {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 12px 16px;
}
.toggle-label {
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.chart-toggle-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.chart-toggle {
  border: 1px solid var(--border);
  background: var(--bg-glass);
  color: var(--text-muted);
  border-radius: 999px;
  padding: 5px 10px;
  font-family: var(--font);
  font-size: var(--fs-xs);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  transition: all var(--transition);
}
.chart-toggle:hover { border-color: var(--text-muted); color: var(--text); }
.chart-toggle.active {
  border-color: var(--accent);
  color: var(--text);
  background: var(--accent-soft);
}
.chart-toggle.locked { cursor: default; opacity: 0.7; }
.ct-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  display: inline-block;
}

/* ═══════════════════════════
   L3: EXPERT
   ═══════════════════════════ */
.layer-expert {
  display: flex;
  flex-direction: column;
  gap: 12px;
  animation: layerIn 0.4s ease both;
}
.expert-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-sm);
}
.expert-title {
  font-size: var(--fs-md);
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Dominance strip */
.dominance-track {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  min-height: 64px;
}
.dominance-segment {
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.dominance-name {
  font-size: var(--fs-xs);
  font-weight: 700;
}
.dominance-time {
  font-family: var(--mono);
  font-size: var(--fs-2xs);
  color: var(--text-secondary);
}
.dominance-note {
  font-size: var(--fs-2xs);
  color: var(--text-muted);
  line-height: 1.4;
}
.dominance-sakei { background: var(--blue-soft); }
.dominance-mesenteroides { background: var(--accent-soft); }
.dominance-plantarum { background: var(--amber-soft); }

/* Nitrite */
.nitrite-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px; margin-bottom: 12px;
  border-radius: var(--radius-xs);
  font-size: var(--fs-xs);
  transition: background var(--transition);
}
.nitrite-bar.safe { background: var(--accent-soft); }
.nitrite-bar.warning { background: var(--amber-soft); }
.nitrite-bar.danger { background: var(--red-soft); }
.nitrite-icon { font-size: var(--fs-md); }
.nitrite-label { font-weight: 600; color: var(--text-secondary); }
.nitrite-level {
  font-family: var(--mono); font-weight: 700; font-size: var(--fs-sm);
}
.nitrite-bar.safe .nitrite-level { color: var(--accent); }
.nitrite-bar.warning .nitrite-level { color: var(--amber); }
.nitrite-bar.danger .nitrite-level { color: var(--red); }
.nitrite-status {
  font-weight: 700; font-size: var(--fs-2xs);
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 999px;
}
.nitrite-bar.safe .nitrite-status { background: rgba(34,197,94,0.15); color: var(--accent); }
.nitrite-bar.warning .nitrite-status { background: rgba(245,158,11,0.15); color: #B45309; }
.nitrite-bar.danger .nitrite-status { background: rgba(239,68,68,0.12); color: var(--red); }
[data-theme="dark"] .nitrite-bar.warning .nitrite-status { color: var(--amber); }

.nitrite-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 8px;
}
.n-metric {
  padding: 8px 12px;
  background: var(--bg-glass);
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-light);
}
.n-label {
  display: block;
  font-size: var(--fs-2xs);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 2px;
}
.n-value {
  display: block;
  font-family: var(--mono);
  font-size: var(--fs-xs);
  color: var(--text);
}
.n-flux {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--border-light);
}
.n-flux .n-label { margin-bottom: 0; }
.n-flux .n-value { font-size: var(--fs-xs); color: var(--text-secondary); text-align: right; }

/* Microbe cards */
.microbe-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.microbe-card {
  border: 1px solid var(--border);
  background: var(--bg-glass);
  border-radius: var(--radius-sm);
  padding: 12px;
  transition: all var(--transition);
}
.microbe-card.active {
  border-color: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  opacity: 0.85;
}
.microbe-card.active-now {
  border-color: var(--blue);
  box-shadow: 0 0 12px rgba(59,130,246,0.25);
  opacity: 1;
}
.microbe-card.active.active-now {
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
  opacity: 1;
}
.mc-head { margin-bottom: 8px; }
.mc-name {
  font-size: var(--fs-sm);
  font-weight: 700;
}
.mc-role {
  font-size: var(--fs-2xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.mc-meter {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 8px;
  border-top: 1px solid var(--border-light);
}
.mc-label {
  font-size: var(--fs-3xs);
  color: var(--text-muted);
}
.mc-val {
  font-family: var(--mono);
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--accent);
}

/* Calculator */
.calc-row {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 10px; padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
}
.calc-row label { font-size: var(--fs-sm); font-weight: 600; }
.calc-input-wrap { display: flex; align-items: center; gap: 5px; }
/* .input-num styles defined in field-list system above */
.calc-unit { font-size: var(--fs-sm); font-weight: 600; color: var(--text-muted); }
.calc-results {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px 16px;
}
.calc-item {
  display: flex; flex-direction: column; gap: 1px;
  padding: 8px 0; border-bottom: 1px solid var(--border-light);
}
.calc-item-name { font-size: var(--fs-sm); color: var(--text-muted); }
.calc-item-amount {
  font-family: var(--mono); font-size: var(--fs-lg); font-weight: 700; color: var(--text);
}
.calc-item-unit { font-size: var(--fs-xs); color: var(--text-secondary); font-weight: 500; }
.calc-note {
  grid-column: 1 / -1; text-align: center;
  font-size: var(--fs-xs); color: var(--text-muted); font-style: italic;
  padding-top: 8px;
}

/* Recipe section */
/* Recipe content (inside <details>, no max-height needed) */
.recipe-content { }
.recipe-content.expanded { } /* compat */
.recipe-extend { }
.recipe-extend-title {
  font-size: var(--fs-xs); font-weight: 600; color: var(--text-secondary);
  margin: 16px 0 8px; display: flex; align-items: center; gap: 6px;
  padding-top: 10px; border-top: 1px solid var(--border-light);
}
.recipe-inner { padding: 12px 0 0; }
.recipe-inner h4 {
  font-size: var(--fs-sm); font-weight: 600; color: var(--text-secondary);
  margin: 10px 0 4px; padding-top: 8px;
  border-top: 1px solid var(--border-light);
}
.recipe-inner h4:first-child { border-top: none; padding-top: 0; margin-top: 0; }
.recipe-inner p, .recipe-inner li { font-size: var(--fs-sm); color: var(--text-secondary); line-height: 1.6; }
.recipe-inner ul, .recipe-inner ol { padding-left: 1.4em; }
.recipe-inner li { margin-bottom: 2px; }
.recipe-table {
  width: 100%; border-collapse: collapse; font-size: var(--fs-xs); margin: 4px 0;
}
.recipe-table th, .recipe-table td {
  padding: 4px 6px; border: 1px solid var(--border); text-align: left;
}
.recipe-table th {
  background: var(--bg-glass); font-weight: 600; font-size: var(--fs-2xs);
}
.recipe-table td { color: var(--text-secondary); }

/* ═══ TOOLTIP ═══ */
.tooltip-box {
  position: fixed; z-index: 1000;
  background: var(--text); color: var(--bg);
  font-size: var(--fs-xs); line-height: 1.5;
  padding: 10px 14px; border-radius: var(--radius-sm);
  max-width: 280px; white-space: pre-line;
  box-shadow: var(--shadow-lg);
  pointer-events: none;
  opacity: 0; transform: translateY(4px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.tooltip-box.visible { opacity: 1; transform: translateY(0); }

/* ═══ FOOTER ═══ */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  margin-top: 24px;
  padding: 12px 20px;
  text-align: center;
}
.footer p { font-size: var(--fs-2xs); color: var(--text-muted); margin-bottom: 2px; }
.footer-models { font-style: italic; }
.footer-refs a { font-size: var(--fs-3xs); color: var(--text-secondary); }
.footer-links { margin-top: 4px; }
.footer-links a { font-size: var(--fs-3xs); color: var(--text-secondary); }

/* ═══ LAYER VISIBILITY ═══ */
.layer[style*="display:none"],
.layer[style*="display: none"] {
  display: none !important;
}

/* ═══ RESPONSIVE ═══ */
@media (max-width: 640px) {
  .main-layout { padding: 10px 10px; }
  .header-inner {
    padding: 6px 10px;
    flex-wrap: wrap;
    gap: 4px;
  }
  .header-brand { flex: 1 1 100%; gap: 6px; }
  .logo-icon { width: 22px; height: 22px; }
  .brand-name { font-size: var(--fs-sm); }
  .brand-sub { display: none; }
  .header-controls { gap: 4px; }
  .lang-btn { padding: 3px 8px; font-size: var(--fs-2xs); }
  .unit-btn { padding: 3px 6px; font-size: var(--fs-2xs); min-width: 26px; }

  .dash {
    flex-direction: column;
    padding: 20px 16px;
    gap: 16px;
  }
  .dash-ring { width: 100px; height: 100px; }
  .dash-day { font-size: 1.6rem; }
  .dash-meta {
    grid-template-columns: 1fr 1fr;
    width: 100%;
  }
  .dash-value { font-size: var(--fs-lg); }

  .nav-chart-canvas { height: 180px; padding: 8px 10px; }

  .quick-bar { flex-direction: column; align-items: stretch; gap: 10px; }
  .quick-presets { justify-content: center; }
  .quick-starter { min-width: 0; }

  .status-panel { padding: 12px 14px; }

  .microbe-cards { grid-template-columns: 1fr; }
  .microbe-card { padding: 8px 10px; }
  .mc-name { font-size: var(--fs-xs); }
  .mc-head { margin-bottom: 4px; }
  .mc-desc { font-size: var(--fs-3xs); line-height: 1.3; }
  .mc-time { font-size: var(--fs-3xs); }
  .mc-meter { padding-top: 4px; }

  .calc-results { grid-template-columns: repeat(2, 1fr); }

  .nitrite-grid { grid-template-columns: 1fr; }
  .n-metric { padding: 6px 8px; }
  .n-value { font-size: var(--fs-2xs); word-break: break-word; }
  .n-label { font-size: var(--fs-3xs); }

  .controls-header { flex-direction: column; align-items: stretch; }
  .batch-inline { flex-wrap: wrap; }

  /* Tighter cards on mobile */
  .glass-card { padding: 12px; border-radius: 14px; }
  .col-card { padding: 12px; }
  .col-title { font-size: var(--fs-2xs); margin-bottom: 8px; }
  .field-item { padding: 6px 0; gap: 6px; }
  .field-marker { width: 16px; height: 16px; font-size: 8px; }
  .input-num { width: 54px; padding: 2px 4px; font-size: var(--fs-xs); }
  .input-num-sm { width: 48px; }
  .input-num-xs { width: 40px; }
  .recipe-type-btn { padding: 4px 10px; font-size: var(--fs-2xs); }
  .process-strip { padding: 12px 10px; }
  .pflow-step-label { font-size: var(--fs-2xs); }
  .pflow-step-desc { font-size: var(--fs-3xs); }

  .dominance-track {
    flex-direction: column;
    min-height: 0;
  }
  .dominance-segment { min-width: 100%; padding: 6px 8px; }
  .dominance-name { font-size: var(--fs-2xs); }
  .dominance-time { font-size: var(--fs-3xs); }
  .dominance-note { font-size: var(--fs-3xs); }

  .btn-expert span:not(.expert-icon) { display: none; }
}

@media (max-width: 380px) {
  .dash-meta { grid-template-columns: 1fr; }
  .preset-chip { padding: 5px 10px; font-size: var(--fs-xs); }
  .lang-btn { padding: 3px 7px; font-size: var(--fs-2xs); }
}

/* ═══ BACKWARD COMPAT ═══ */
.hero-chart, .hero-chart-header, .hero-stats, .hero-stat,
.mixer, .mixer-header, .mixer-channels, .mixer-readout,
.mixer-divider, .channel, .channel-fader, .channel-value,
.channel-label, .channel-icon,
.readout-item, .readout-label, .readout-value,
.intro-panel, .intro-copy, .intro-facts, .intro-fact,
.phase-indicator, .phase-header, .phase-bar,
.learning-grid, .learn-card, .microbe-board,
.guide-list, .guide-step,
.process-flow, .flow-steps, .flow-step, .flow-arrow,
.batch-tracker, .batch-tracker-header, .batch-status,
.calc-card, .calc-meta, .calc-source, .calc-link,
.recipe-section,
.fader, .section-head, .section-title, .section-icon, .section-copy,
.chart-title-sm, .info-dot, .info-dot-mini,
.preset-panel, .preset-label, .preset-row {
  /* These classes exist for backward compat but are no longer used in the new layout */
}

/* ═══ PROCESS FLOW STRIP ═══ */
.process-strip { padding: 20px 16px; overflow-x: auto; }
.pflow {
  display: flex;
  align-items: flex-start;
  gap: 0;
  min-width: 0;
}
.pf-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  min-width: 72px;
  flex: 1;
  text-align: center;
}
.pf-icon { font-size: 1.6rem; line-height: 1; }
.pf-num {
  font-family: var(--mono);
  font-size: var(--fs-2xs);
  font-weight: 700;
  color: var(--text-muted);
  background: var(--border-light);
  width: 18px; height: 18px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.pf-name {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--text);
}
.pf-desc {
  font-size: var(--fs-2xs);
  color: var(--text-muted);
  line-height: 1.3;
  max-width: 90px;
}
.pf-arrow {
  color: var(--text-muted);
  font-size: var(--fs-md);
  margin-top: 10px;
  flex-shrink: 0;
  opacity: 0.4;
}
/* No step highlighted by default — all steps equal weight */

@media (max-width: 640px) {
  .pflow { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .pf-step { min-width: 60px; }
  .pf-desc { font-size: var(--fs-3xs); max-width: 60px; }
}

/* ═══ PRINT ═══ */
@media print {
  .header, .footer, .btn-why, .quick-bar, .btn-expert { display: none; }
  .layer { display: block !important; }
  body { background: #fff; }
}