/* ============ DESIGN TOKENS ============ */
:root, [data-theme='light'] {
  --color-bg: #f7f6f2;
  --color-surface: #ffffff;
  --color-surface-2: #fbfbf9;
  --color-surface-offset: #f3f0ec;
  --color-divider: #e3e0da;
  --color-border: #d4d1ca;

  --color-text: #28251d;
  --color-text-muted: #6f6e69;
  --color-text-faint: #a9a7a1;
  --color-text-inverse: #f9f8f4;

  --color-primary: #01696f;
  --color-primary-hover: #0c4e54;
  --color-primary-active: #0f3638;
  --color-primary-highlight: #cedcd8;

  --color-success: #437a22;
  --color-success-highlight: #dfe9d5;
  --color-warning: #a3720a;
  --color-warning-highlight: #f1e3c4;
  --color-error: #a12c7b;
  --color-error-highlight: #f0d9e7;

  --radius-sm: 0.375rem;
  --radius-md: 0.6rem;
  --radius-lg: 0.9rem;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(30, 26, 18, 0.06);
  --shadow-md: 0 6px 20px rgba(30, 26, 18, 0.08);
  --shadow-lg: 0 16px 40px rgba(30, 26, 18, 0.12);

  --font-display: 'General Sans', 'Segoe UI', sans-serif;
  --font-body: 'Satoshi', 'Segoe UI', sans-serif;
}

[data-theme='dark'] {
  --color-bg: #14201f;
  --color-surface: #1a2726;
  --color-surface-2: #1e2c2b;
  --color-surface-offset: #223231;
  --color-divider: #2b3a39;
  --color-border: #374846;

  --color-text: #dfe6e3;
  --color-text-muted: #93a3a0;
  --color-text-faint: #64756f2;
  --color-text-faint: #647572;
  --color-text-inverse: #14201f;

  --color-primary: #57b6bd;
  --color-primary-hover: #78c7cd;
  --color-primary-active: #94d3d8;
  --color-primary-highlight: #29403f;

  --color-success: #82c15e;
  --color-success-highlight: #29401f;
  --color-warning: #e0b04c;
  --color-warning-highlight: #453720;
  --color-error: #dd8ac0;
  --color-error-highlight: #442e3d;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.45);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #14201f;
    --color-surface: #1a2726;
    --color-surface-2: #1e2c2b;
    --color-surface-offset: #223231;
    --color-divider: #2b3a39;
    --color-border: #374846;
    --color-text: #dfe6e3;
    --color-text-muted: #93a3a0;
    --color-text-faint: #647572;
    --color-text-inverse: #14201f;
    --color-primary: #57b6bd;
    --color-primary-hover: #78c7cd;
    --color-primary-active: #94d3d8;
    --color-primary-highlight: #29403f;
    --color-success: #82c15e;
    --color-success-highlight: #29401f;
    --color-warning: #e0b04c;
    --color-warning-highlight: #453720;
    --color-error: #dd8ac0;
    --color-error-highlight: #442e3d;
  }
}

:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.82rem + 0.2vw, 0.9375rem);
  --text-base: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1.05rem + 0.4vw, 1.375rem);
  --text-xl: clamp(1.375rem, 1.15rem + 1vw, 1.875rem);
  --text-2xl: clamp(1.75rem, 1.3rem + 2vw, 2.5rem);

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem;
  --space-4: 1rem; --space-5: 1.25rem; --space-6: 1.5rem;
  --space-8: 2rem; --space-10: 2.5rem; --space-12: 3rem;
  --space-16: 4rem; --space-20: 5rem;
}

/* ============ BASE ============ */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body), sans-serif;
  font-size: var(--text-base);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: background-color 220ms ease, color 220ms ease;
}
h1, h2, h3 { font-family: var(--font-display), sans-serif; color: var(--color-text); margin: 0; }
h1 { font-size: var(--text-2xl); font-weight: 700; line-height: 1.15; }
h2 { font-size: var(--text-xl); font-weight: 600; line-height: 1.2; }
h3 { font-size: var(--text-lg); font-weight: 600; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; }

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--color-primary); color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-4); z-index: 100;
}
.skip-link:focus { left: var(--space-4); top: var(--space-4); border-radius: var(--radius-sm); }

:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

/* ============ HEADER ============ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--color-surface) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-divider);
}
.header-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-3) var(--space-6);
}
.brand { display: flex; align-items: center; gap: var(--space-3); }
.brand-mark { flex-shrink: 0; display: block; object-fit: contain; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-title { font-family: var(--font-display); font-weight: 600; font-size: var(--text-sm); }
.brand-sub { font-size: var(--text-xs); color: var(--color-text-muted); }
.header-actions { display: flex; align-items: center; gap: var(--space-2); }

.brand-stacked { flex-direction: column; align-items: flex-start; gap: var(--space-2); }
.brand-mark-wordmark { height: 40px; width: auto; }
.brand-stacked .brand-text { align-items: flex-start; }
.brand-stacked .brand-sub { font-size: var(--text-xs); }

.attribution-strip {
  text-align: center;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-primary-highlight);
  padding: var(--space-2) var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}

.print-letterhead { display: none; }

.btn {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all 160ms ease;
}
.btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-ghost { background: transparent; }
.btn-primary { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.btn-primary:hover { background: var(--color-primary-hover); color: #fff; }
.btn-secondary { background: var(--color-surface-2); }
.btn-block { width: 100%; text-align: center; }

.icon-btn {
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-full); border: 1px solid var(--color-border);
  background: var(--color-surface); color: var(--color-text-muted);
  transition: all 160ms ease;
}
.icon-btn:hover { color: var(--color-primary); border-color: var(--color-primary); }

.progress-track {
  height: 4px; background: var(--color-divider); width: 100%;
}
.progress-fill {
  height: 100%; width: 0%; background: var(--color-primary);
  transition: width 260ms ease;
}

/* ============ INTRO ============ */
.intro { padding: var(--space-10) var(--space-6) var(--space-6); }
.intro-inner { max-width: 780px; margin: 0 auto; text-align: left; }
.intro-context { margin-top: var(--space-3); color: var(--color-text); font-size: var(--text-base); max-width: 720px; line-height: 1.6; }
.intro-lede { margin-top: var(--space-3); color: var(--color-text-muted); font-size: var(--text-base); max-width: 640px; }
.intro-note {
  margin-top: var(--space-5);
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.scale-key {
  margin-top: var(--space-6);
  display: flex; flex-wrap: wrap; gap: var(--space-4);
  font-size: var(--text-xs); color: var(--color-text-muted);
}
.scale-item { display: flex; align-items: center; gap: var(--space-2); }
.dot { width: 10px; height: 10px; border-radius: var(--radius-full); display: inline-block; }
.dot-0 { background: var(--color-text-faint); }
.dot-1 { background: var(--color-success); }
.dot-2 { background: var(--color-warning); }
.dot-3 { background: var(--color-error); }

/* ============ LAYOUT ============ */
.layout {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 320px;
  gap: var(--space-8);
  padding: 0 var(--space-6) var(--space-12);
  align-items: start;
}
.survey-column { display: flex; flex-direction: column; gap: var(--space-6); min-width: 0; }

/* ============ CATEGORY CARD ============ */
.category-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}
.category-head {
  display: flex; align-items: flex-start; gap: var(--space-4);
  margin-bottom: var(--space-4);
}
.category-badge {
  flex-shrink: 0; width: 34px; height: 34px; border-radius: var(--radius-full);
  background: var(--color-primary-highlight); color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 700; font-size: var(--text-sm);
}
.category-title-wrap { flex: 1; min-width: 0; }
.category-title { font-size: var(--text-lg); font-weight: 600; font-family: var(--font-display); }
.category-desc { margin-top: var(--space-1); font-size: var(--text-sm); color: var(--color-text-muted); }
.category-pill {
  flex-shrink: 0;
  font-size: var(--text-xs); font-weight: 700;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
  white-space: nowrap;
  transition: background-color 200ms ease, color 200ms ease;
}
.category-pill.band-low { background: var(--color-success-highlight); color: var(--color-success); }
.category-pill.band-moderate { background: var(--color-warning-highlight); color: var(--color-warning); }
.category-pill.band-high { background: var(--color-error-highlight); color: var(--color-error); }

.symptom-row {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
  padding: var(--space-3) 0;
  border-top: 1px solid var(--color-divider);
}
.symptom-row:first-of-type { border-top: 1px solid var(--color-divider); margin-top: var(--space-2); }
.symptom-label { font-size: var(--text-sm); color: var(--color-text); flex: 1; }

.rating-group { display: flex; gap: var(--space-1); flex-shrink: 0; }
.rating-group input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.rating-option {
  width: 34px; height: 34px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  display: flex; align-items: center; justify-content: center;
  font-size: var(--text-sm); font-weight: 600;
  transition: all 140ms ease;
}
.rating-option:hover { border-color: var(--color-primary); color: var(--color-primary); }
.rating-group input:checked + .rating-option { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.rating-group input:focus-visible + .rating-option { outline: 2px solid var(--color-primary); outline-offset: 2px; }

/* ============ SUMMARY SIDEBAR ============ */
.summary-column { min-width: 0; }
.summary-sticky { position: sticky; top: calc(64px + var(--space-6)); }
.summary-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  margin-top: var(--space-10);
}
.summary-card h2 { font-size: var(--text-base); margin-bottom: var(--space-4); }
.overall-score { text-align: center; padding: var(--space-4) 0; border-bottom: 1px solid var(--color-divider); margin-bottom: var(--space-4); }
.overall-num { display: block; font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 700; color: var(--color-primary); }
.overall-label { font-size: var(--text-xs); color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.03em; }

.rank-list { display: flex; flex-direction: column; gap: var(--space-3); margin-bottom: var(--space-5); }
.rank-item { display: flex; flex-direction: column; gap: var(--space-1); }
.rank-top { display: flex; justify-content: space-between; font-size: var(--text-xs); }
.rank-name { color: var(--color-text); font-weight: 500; }
.rank-pct { color: var(--color-text-muted); font-weight: 600; }
.rank-bar-track { height: 6px; border-radius: var(--radius-full); background: var(--color-divider); overflow: hidden; }
.rank-bar-fill { height: 100%; border-radius: var(--radius-full); transition: width 260ms ease, background-color 200ms ease; }

/* ============ RESULTS SECTION ============ */
.results { padding: var(--space-16) var(--space-6) var(--space-20); background: var(--color-surface-offset); border-top: 1px solid var(--color-divider); }
.results-inner { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: var(--space-8); }
.results-lede { color: var(--color-text-muted); margin-top: var(--space-2); }

.bars-card, .critical-card, .universal-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}
.bars-list { display: flex; flex-direction: column; gap: var(--space-4); margin-top: var(--space-4); }
.bar-row-top { display: flex; justify-content: space-between; font-size: var(--text-sm); margin-bottom: var(--space-1); }
.bar-row-name { font-weight: 500; }
.bar-row-val { color: var(--color-text-muted); font-size: var(--text-xs); }
.bar-track { height: 10px; border-radius: var(--radius-full); background: var(--color-divider); overflow: hidden; }
.bar-fill { height: 100%; border-radius: var(--radius-full); transition: width 400ms ease; }

.critical-list { display: flex; flex-direction: column; gap: var(--space-4); margin-top: var(--space-4); }
.critical-item {
  border: 1px solid var(--color-divider);
  border-left: 4px solid var(--color-error);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: var(--color-surface-2);
}
.critical-item.rank-2 { border-left-color: var(--color-warning); }
.critical-item.rank-low { border-left-color: var(--color-success); }
.critical-item-head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-3); flex-wrap: wrap; }
.critical-item-title { font-family: var(--font-display); font-weight: 600; font-size: var(--text-base); }
.critical-item-score { font-size: var(--text-xs); color: var(--color-text-muted); font-weight: 600; }
.critical-item ul { margin-top: var(--space-3); display: flex; flex-direction: column; gap: var(--space-2); }
.critical-item li { font-size: var(--text-sm); color: var(--color-text); padding-left: var(--space-5); position: relative; }
.critical-item li::before {
  content: ''; position: absolute; left: var(--space-1); top: 0.55em;
  width: 6px; height: 6px; border-radius: var(--radius-full); background: var(--color-primary);
}
.lifestyle-heading { font-size: var(--text-xs); font-weight: 600; text-transform: uppercase; letter-spacing: 0.02em; color: var(--color-text-muted); margin-top: var(--space-3); }

.supp-heading {
  display: flex; align-items: baseline; gap: var(--space-2); flex-wrap: wrap;
  font-size: var(--text-xs); font-weight: 600; text-transform: uppercase; letter-spacing: 0.02em;
  color: var(--color-text-muted); margin-top: var(--space-4); padding-top: var(--space-3);
  border-top: 1px dashed var(--color-divider);
}
.supp-src { font-size: var(--text-xs); font-weight: 400; text-transform: none; color: var(--color-text-faint); }
.supp-list { margin-top: var(--space-2); display: flex; flex-direction: column; gap: var(--space-2); }
.supp-list li { font-size: var(--text-sm); color: var(--color-text); padding-left: var(--space-5); position: relative; }
.supp-list li::before {
  content: ''; position: absolute; left: var(--space-1); top: 0.55em;
  width: 6px; height: 6px; border-radius: var(--radius-full); background: var(--color-warning);
}
.supp-name { font-weight: 600; color: var(--color-primary); }
.supp-note { font-size: var(--text-xs); font-weight: 600; color: var(--color-warning); margin-top: var(--space-4); padding: var(--space-3) var(--space-4); line-height: 1.5; background: var(--color-warning-highlight); border: 1px solid var(--color-warning); border-radius: var(--radius-md); }

.universal-list { display: flex; flex-direction: column; gap: var(--space-2); margin-top: var(--space-4); }
.universal-list li { font-size: var(--text-sm); padding-left: var(--space-5); position: relative; }
.universal-list li::before {
  content: ''; position: absolute; left: var(--space-1); top: 0.55em;
  width: 6px; height: 6px; border-radius: var(--radius-full); background: var(--color-text-faint);
}

.resilience-matrix-figure {
  margin: var(--space-6) 0 0; padding: 0; border: 1px solid var(--color-divider); border-radius: var(--radius-md, 8px); overflow: hidden; background: #fff;
}
.resilience-matrix-figure img { display: block; width: 100%; height: auto; }

.resilience-block {
  margin-top: var(--space-6); padding-top: var(--space-5); border-top: 1px solid var(--color-divider);
}
.resilience-head { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; }
.resilience-head h4 { font-family: var(--font-display); font-size: var(--text-base); font-weight: 600; }
.resilience-badge {
  font-size: var(--text-xs); font-weight: 600; color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 12%, transparent);
  border-radius: var(--radius-full); padding: 2px var(--space-3);
}
.resilience-intro { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-2); line-height: 1.6; }
.resilience-list {
  margin-top: var(--space-4); display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3) var(--space-5);
}
.resilience-list li { font-size: var(--text-sm); padding-left: var(--space-5); position: relative; }
.resilience-list li::before {
  content: ''; position: absolute; left: var(--space-1); top: 0.55em;
  width: 6px; height: 6px; border-radius: var(--radius-full); background: var(--color-primary);
}
.resilience-name { display: block; font-weight: 600; color: var(--color-text); }
.resilience-note { display: block; font-size: var(--text-xs); color: var(--color-text-faint); margin-top: 2px; line-height: 1.4; }
.resilience-link { font-size: var(--text-xs); color: var(--color-text-faint); margin-top: var(--space-4); }
.resilience-link a { color: var(--color-primary); }

.critical-conclusion { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.6; margin-top: var(--space-6); padding-top: var(--space-4); border-top: 1px solid var(--color-divider); }
.critical-conclusion a { color: var(--color-primary); }

.print-row { display: flex; justify-content: center; }
.source-note { font-size: var(--text-xs); color: var(--color-text-faint); line-height: 1.6; }
.source-note a { color: var(--color-primary); }

.site-footer { text-align: center; padding: var(--space-6); font-size: var(--text-xs); color: var(--color-text-faint); }
.site-footer p { margin: var(--space-1) 0; }
.site-footer a { color: var(--color-primary); }

/* ============ RESPONSIVE ============ */
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .summary-column { order: -1; }
  .summary-sticky { position: static; }
  .summary-card { margin-top: var(--space-6); }
}
@media (max-width: 560px) {
  .header-inner { padding: var(--space-3) var(--space-4); }
  .intro, .layout { padding-left: var(--space-4); padding-right: var(--space-4); }
  .results { padding-left: var(--space-4); padding-right: var(--space-4); }
  .symptom-row { flex-direction: column; align-items: flex-start; gap: var(--space-2); }
  .rating-group { align-self: stretch; justify-content: space-between; width: 100%; }
  .rating-option { flex: 1; }
  .brand-sub { display: none; }
  .brand-stacked .brand-sub { display: block; font-size: 11px; }
  .brand-mark-wordmark { height: 32px; }
  .resilience-list { grid-template-columns: 1fr; }
}

/* ============ PRINT ============ */
@media print {
  .site-header, .attribution-strip, .summary-column, .print-row, .site-footer, .jump-btn { display: none !important; }
  .survey-column { display: none !important; }
  .results { background: #fff; padding: 0; }
  body { background: #fff; }
  .print-letterhead {
    display: flex; align-items: center; gap: var(--space-3);
    padding-bottom: var(--space-4); margin-bottom: var(--space-4);
    border-bottom: 2px solid #01696f;
  }
  .print-letterhead img { width: 40px; height: 40px; }
  .print-letterhead-text { display: flex; flex-direction: column; line-height: 1.3; }
  .print-letterhead-text strong { font-size: 14px; color: #01696f; }
  .print-letterhead-text span { font-size: 11px; color: #555; }
}