/* ============================================================
   CarbonEye — editorial instrument theme
   Type:   Fraunces (display) · Inter (UI) · IBM Plex Mono (data)
   Space:  4px scale (0.25rem steps)
   Radius: 8 / 12 / 16 px
   Color:  warm paper + forest green, dark via prefers-color-scheme
   ============================================================ */

:root {
  --bg: #f6f5f1;
  --bg-wash: rgba(30, 122, 82, 0.05);
  --card: #ffffff;
  --border: #e7e5dc;
  --border-strong: #d5d2c6;
  --ink: #1b221e;
  --muted: #5d6862;
  --accent: #1e7a52;
  --accent-deep: #155f40;
  --accent-ink: #ffffff;
  --accent-soft: #e3efe8;
  --accent-soft-2: #f1f7f3;
  --field: #f3f2ec;
  --warn-bg: #fdf6e7;
  --warn-border: #ecd9a8;
  --warn-ink: #8a5a18;
  --error: #b42318;

  --bar-materials: #1e7a52;
  --bar-manufacturing: #7cb898;
  --bar-transport: #c9a227;
  --bar-use: #5b7db1;
  --bar-eol: #a3a89f;

  --shadow-sm: 0 1px 2px rgba(27, 34, 30, 0.05);
  --shadow-md: 0 1px 2px rgba(27, 34, 30, 0.04), 0 10px 28px -10px rgba(27, 34, 30, 0.10);
  --shadow-lift: 0 2px 4px rgba(27, 34, 30, 0.05), 0 14px 32px -10px rgba(27, 34, 30, 0.15);

  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;

  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Consolas, monospace;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1411;
    --bg-wash: rgba(82, 192, 140, 0.05);
    --card: #151c17;
    --border: #262f28;
    --border-strong: #36423a;
    --ink: #e8ede9;
    --muted: #9cab9f;
    --accent: #52c08c;
    --accent-deep: #6fd0a2;
    --accent-ink: #0a2f1f;
    --accent-soft: rgba(82, 192, 140, 0.16);
    --accent-soft-2: rgba(82, 192, 140, 0.07);
    --field: #1a231d;
    --warn-bg: #292113;
    --warn-border: #574722;
    --warn-ink: #e2b75e;
    --error: #f08c7d;

    --bar-materials: #52c08c;
    --bar-manufacturing: #8fd9b4;
    --bar-transport: #d9b54a;
    --bar-use: #82a4d6;
    --bar-eol: #79827b;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 28px -10px rgba(0, 0, 0, 0.45);
    --shadow-lift: 0 2px 4px rgba(0, 0, 0, 0.3), 0 16px 34px -10px rgba(0, 0, 0, 0.55);
  }
}

/* ---------- base ---------- */

* { box-sizing: border-box; }

html { color-scheme: light dark; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--ink);
  background:
    radial-gradient(1100px 420px at 50% -180px, var(--bg-wash), transparent 70%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

[hidden] { display: none !important; }

a { color: var(--accent); }

::selection { background: var(--accent-soft); }

:where(button, a, select, input, textarea, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* icons */
.i {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  flex: none;
}

/* small mono section label, used across the page */
.section-label, .kicker {
  font-family: var(--font-mono);
  font-size: 0.69rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- header & hero ---------- */

.site-header {
  max-width: 860px;
  margin: 0 auto;
  padding: 1.5rem clamp(1rem, 4vw, 1.5rem) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  color: var(--ink);
}
.wordmark .mark { width: 23px; height: 23px; color: var(--accent); stroke-width: 1.9; }
.wordmark .brand {
  font-family: var(--font-display);
  font-size: 1.22rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.site-nav-link {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--muted);
  padding: 0.4rem 0;
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}
.site-nav-link:hover { color: var(--accent); border-bottom-color: var(--accent); }

main {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 1.5rem) 3rem;
}

.hero { padding: clamp(1.8rem, 5vw, 3rem) 0 1.7rem; }

.hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.95rem, 4.6vw, 2.75rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.018em;
  max-width: 21ch;
  text-wrap: balance;
}
.hero h1 em {
  font-style: italic;
  color: var(--accent);
}

.tagline {
  color: var(--muted);
  margin: 0.85rem 0 0;
  max-width: 48ch;
  font-size: 1.02rem;
}

/* ---------- panels ---------- */

.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
}

.input-card { padding: clamp(1.25rem, 3vw, 1.75rem); margin-bottom: 1.25rem; }
.result-card { padding: clamp(1.4rem, 3.5vw, 2rem); margin-bottom: 1.25rem; }

/* ---------- dropzone ---------- */

.dropzone {
  position: relative;
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--r-md);
  min-height: 168px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem;
  cursor: pointer;
  text-align: center;
  color: var(--muted);
  background: var(--field);
  transition: border-color 0.18s ease, background-color 0.18s ease;
  overflow: hidden;
}
.dropzone:hover, .dropzone:focus-visible, .dropzone.dragover {
  border-color: var(--accent);
  background: var(--accent-soft-2);
}

#drop-hint { padding: 1.25rem 1rem; }
#drop-hint p { margin: 0; font-size: 0.92rem; }
#drop-hint strong { color: var(--ink); font-weight: 600; }

.drop-icon {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 0.7rem;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
}
.drop-icon .i { width: 21px; height: 21px; }

.camera-btn {
  display: none;
  align-items: center;
  gap: 0.45rem;
  margin: 0.9rem auto 0;
  background: var(--card);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 0.5rem 1.05rem;
  color: var(--ink);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
}
.camera-btn .i { color: var(--accent); width: 15px; height: 15px; }
@media (pointer: coarse) { .camera-btn { display: inline-flex; } }

#preview { max-width: 100%; max-height: 340px; border-radius: 8px; display: block; }

.clear-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  display: grid;
  place-items: center;
  border: none;
  border-radius: 50%;
  width: 30px;
  height: 30px;
  background: rgba(12, 17, 14, 0.72);
  color: #fff;
  cursor: pointer;
  transition: background-color 0.16s ease;
}
.clear-btn .i { width: 14px; height: 14px; stroke-width: 2; }
.clear-btn:hover { background: rgba(12, 17, 14, 0.85); }

/* ---------- "or" divider ---------- */

.or-divider {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin: 1.05rem 0 0.8rem;
}
.or-divider::before, .or-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}
.or-divider span {
  font-family: var(--font-mono);
  font-size: 0.67rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- inputs & buttons ---------- */

textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--field);
  color: var(--ink);
  font: inherit;
  resize: vertical;
  transition: border-color 0.16s ease, box-shadow 0.16s ease;
}
textarea::placeholder { color: var(--muted); opacity: 0.85; }
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  background: var(--card);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem 1.25rem;
  align-items: flex-start;
  margin-top: 1.1rem;
}

button.primary {
  background: var(--accent);
  color: var(--accent-ink);
  border: none;
  border-radius: 10px;
  padding: 0.78rem 1.65rem;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: background-color 0.16s ease, transform 0.16s ease, box-shadow 0.16s ease;
}
button.primary:hover:not(:disabled) {
  background: var(--accent-deep);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lift);
}
button.primary:active:not(:disabled) { transform: translateY(0); box-shadow: var(--shadow-sm); }
button.primary:disabled { opacity: 0.55; cursor: wait; }

.ghost-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--card);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 0.5rem 1.1rem;
  color: var(--ink);
  font: inherit;
  font-size: 0.86rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.16s ease, background-color 0.16s ease, transform 0.16s ease, box-shadow 0.16s ease;
}
.ghost-btn .i { color: var(--accent); width: 15px; height: 15px; }
.ghost-btn:hover {
  border-color: var(--accent);
  background: var(--accent-soft-2);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.reset-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 0.42rem 0.9rem;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.79rem;
  font-weight: 500;
  transition: color 0.16s ease, border-color 0.16s ease;
}
.reset-btn:hover { color: var(--ink); border-color: var(--border-strong); }

/* BYOK disclosure */

.byok {
  font-size: 0.84rem;
  color: var(--muted);
  flex: 1;
  min-width: 240px;
  max-width: 380px;
  padding-top: 0.55rem;
}
.byok summary {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  cursor: pointer;
  user-select: none;
  list-style: none;
  font-weight: 500;
  transition: color 0.16s ease;
}
.byok summary::-webkit-details-marker { display: none; }
.byok summary:hover { color: var(--ink); }
.byok summary .i { width: 14px; height: 14px; }
.byok summary .chev { width: 13px; height: 13px; transition: transform 0.2s ease; }
.byok[open] summary .chev { transform: rotate(180deg); }
.byok p { margin: 0.6rem 0 0.5rem; }
.byok input {
  width: 100%;
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--field);
  color: var(--ink);
  font: inherit;
  font-size: 0.84rem;
}
.byok input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

/* status & banners */

.status { margin: 1rem 0 0; color: var(--muted); font-size: 0.9rem; }
.status.busy::before {
  content: "";
  display: inline-block;
  width: 13px;
  height: 13px;
  margin-right: 0.55rem;
  vertical-align: -2px;
  border-radius: 50%;
  border: 2px solid var(--accent-soft);
  border-top-color: var(--accent);
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.status.error { color: var(--error); font-weight: 500; }

.demo-banner {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  margin: 0 0 1.1rem;
  padding: 0.65rem 0.9rem;
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  border-radius: var(--r-md);
  color: var(--warn-ink);
  font-size: 0.84rem;
}
.demo-banner .i { width: 15px; height: 15px; margin-top: 2px; }

/* example chips */

.examples { margin-top: 1.3rem; padding-top: 1.1rem; border-top: 1px solid var(--border); }
.examples-label {
  display: block;
  margin-bottom: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.69rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.example-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.example-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 0.42rem 0.95rem;
  color: var(--ink);
  font: inherit;
  font-size: 0.84rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.16s ease, color 0.16s ease, background-color 0.16s ease;
}
.example-chip .i { width: 13px; height: 13px; color: var(--accent); }
.example-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft-2);
}

/* ---------- results ---------- */

#results { animation: rise 0.5s var(--ease-out) both; }
@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: none; }
}

.results-toolbar {
  display: flex;
  justify-content: flex-end;
  margin: 0.2rem 0 0.7rem;
}

.grid-picker {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  max-width: 100%;
}
.grid-picker label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--muted);
}
.grid-picker label .i { width: 14px; height: 14px; color: var(--accent); }
.grid-picker select {
  appearance: none;
  max-width: 100%;
  text-overflow: ellipsis;
  padding: 0.45rem 1.9rem 0.45rem 0.7rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-sm);
  background: var(--card) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23878f88' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 0.55rem center / 13px;
  color: var(--ink);
  font: inherit;
  font-size: 0.82rem;
  cursor: pointer;
  transition: border-color 0.16s ease;
}
.grid-picker select:hover { border-color: var(--accent); }
.grid-picker select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

/* result card: header */

.result-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem 1rem;
  flex-wrap: wrap;
}
.result-card h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3.2vw, 1.8rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.012em;
}
.subtitle { color: var(--muted); font-size: 0.85rem; margin: 0.35rem 0 0; }
.adjusted-badge {
  color: var(--accent);
  font-weight: 600;
  white-space: nowrap;
}
.adjusted-badge .i { width: 12px; height: 12px; vertical-align: -1.5px; margin-right: 2px; }

#share-btn { padding: 0.45rem 0.95rem; font-size: 0.82rem; flex: none; }

/* result card: headline figure */

.figure-block {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.1rem 2.5rem;
  flex-wrap: wrap;
  margin: 1.3rem 0 1.5rem;
  padding: 1.15rem 1.3rem 1.05rem;
  background: var(--accent-soft-2);
  border: 1px solid var(--accent-soft);
  border-radius: var(--r-md);
}
.figure-main { min-width: 0; }
.big {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -0.022em;
  color: var(--ink);
}
.figure-caption {
  display: block;
  margin-top: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.69rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.figure-stats { display: flex; flex-wrap: wrap; gap: 0.6rem 0; padding-bottom: 0.15rem; }
.fstat { padding: 0 1.4rem; border-left: 1px solid var(--border-strong); }
.fstat:first-child { border-left: none; padding-left: 0; }
.fstat:last-child { padding-right: 0; }
.fstat-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.fstat-value {
  display: block;
  margin-top: 0.2rem;
  font-size: 1.06rem;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}

/* result card: built-from summary */

.built-from {
  margin: -0.4rem 0 1.4rem;
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.built-from .section-label { margin-right: 0.45rem; }
.built-from-list { color: var(--ink); }
.built-from-adjust {
  margin-left: 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  white-space: nowrap;
}
.built-from-adjust:hover { text-decoration: underline; }
.built-from-adjust .i { width: 13px; height: 13px; }

/* result card: lifecycle bar */

.bar-section { margin: 0 0 1.4rem; }
.bar-section .section-label { display: block; margin-bottom: 0.6rem; }

.bar {
  display: flex;
  gap: 2px;
  height: 12px;
  border-radius: 999px;
  overflow: hidden;
  animation: barclip 0.55s var(--ease-out) both;
}
@keyframes barclip {
  from { clip-path: inset(0 100% 0 0); }
  to   { clip-path: inset(0 0 0 0); }
}
.bar div { min-width: 4px; }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.3rem;
  margin-top: 0.7rem;
  font-size: 0.81rem;
  color: var(--muted);
}
.legend-item { display: inline-flex; align-items: center; gap: 0.45rem; }
.legend-item b { color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }
.legend .dot { display: inline-block; width: 9px; height: 9px; border-radius: 3px; flex: none; }

/* result card: metric tiles */

.metric-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(175px, 1fr));
  gap: 0.75rem;
  margin: 0 0 1.4rem;
}
.metric {
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 0.85rem 1rem 0.9rem;
}
.metric .label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
}
.metric .label .i { width: 13px; height: 13px; color: var(--accent); }
.metric .value {
  margin-top: 0.45rem;
  font-size: 1.16rem;
  font-weight: 650;
  line-height: 1.25;
  font-variant-numeric: tabular-nums;
}
.metric .sub { font-size: 0.78rem; color: var(--muted); margin-top: 0.15rem; }

/* result card: equivalents */

.eq-section { margin: 0 0 1.4rem; }
.eq-section .section-label { display: block; margin-bottom: 0.6rem; }
.equivalents { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.equivalents span {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--field);
  border-radius: 999px;
  padding: 0.42rem 0.95rem 0.42rem 0.75rem;
  font-size: 0.84rem;
}
.equivalents .i { width: 15px; height: 15px; color: var(--accent); }

/* result card: assumptions */

details.assumptions {
  margin-top: 1.3rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--border);
  font-size: 0.88rem;
}
details.assumptions summary {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  cursor: pointer;
  user-select: none;
  list-style: none;
  color: var(--muted);
  font-weight: 500;
  transition: color 0.16s ease;
}
details.assumptions summary::-webkit-details-marker { display: none; }
details.assumptions summary:hover { color: var(--ink); }
details.assumptions summary .chev { width: 14px; height: 14px; transition: transform 0.2s ease; }
details.assumptions[open] summary .chev { transform: rotate(180deg); }
details.assumptions[open] summary { color: var(--ink); }

.assumptions-body { margin-top: 1rem; animation: fade 0.25s ease both; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }

details.assumptions table { border-collapse: collapse; width: 100%; }
details.assumptions th {
  text-align: left;
  padding: 0 0.7rem 0.45rem 0;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--border-strong);
}
details.assumptions td {
  text-align: left;
  padding: 0.45rem 0.7rem 0.45rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
}
details.assumptions th:nth-child(n+2),
details.assumptions td:nth-child(n+2) { text-align: right; padding-right: 0; padding-left: 0.7rem; }
details.assumptions td:first-child { color: var(--ink); }

.assumed-line { color: var(--muted); font-size: 0.84rem; margin: 0.8rem 0 0; }

.adjust {
  margin-top: 1rem;
  padding: 1rem 1.1rem 1.1rem;
  background: var(--field);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
}
.adjust h4 {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.67rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.adjust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(135px, 1fr));
  gap: 0.7rem 0.8rem;
}
.adjust label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
}
.adjust input, .adjust select {
  padding: 0.48rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--card);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.86rem;
  letter-spacing: normal;
  text-transform: none;
  width: 100%;
  transition: border-color 0.16s ease;
}
.adjust input:focus, .adjust select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.adjust .reset-btn { margin-top: 0.8rem; }

/* ---------- compare ---------- */

#compare-bar {
  margin: 0 0 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  align-items: flex-start;
}

.compare-pop {
  width: 100%;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-md);
  padding: 0.9rem 1rem 1rem;
  animation: rise 0.25s var(--ease-out) both;
}
.compare-pop::before {
  content: "Compare against";
  display: block;
  flex-basis: 100%;
  margin-bottom: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.compare-title {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1rem !important;
}
.compare-title .i { width: 18px; height: 18px; color: var(--accent); }

.table-scroll { overflow-x: auto; }

.compare-table { border-collapse: collapse; width: 100%; font-size: 0.87rem; }
.compare-table th, .compare-table td {
  text-align: left;
  padding: 0.5rem 0.9rem 0.5rem 0;
  border-bottom: 1px solid var(--border);
}
.compare-table th {
  font-size: 0.92rem;
  font-weight: 650;
  color: var(--ink);
}
.compare-table tr:first-child th { border-bottom-color: var(--border-strong); }
.compare-table td { font-variant-numeric: tabular-nums; }
.compare-table td:first-child { color: var(--muted); font-size: 0.8rem; }

.verdict {
  margin: 1rem 0 0;
  padding: 0.8rem 1rem;
  background: var(--accent-soft-2);
  border: 1px solid var(--accent-soft);
  border-radius: var(--r-md);
  font-size: 0.89rem;
  color: var(--muted);
}
.verdict strong { color: var(--ink); font-weight: 650; }
#compare-section .reset-btn { margin-top: 1rem; }

/* ---------- secondary objects ---------- */

#others-section h2 {
  margin: 1.9rem 0 0.15rem;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.hint { color: var(--muted); font-size: 0.82rem; margin: 0.15rem 0 0.85rem; }

.other-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(172px, 1fr));
  gap: 0.75rem;
}
.other-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 0.85rem 1rem;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}
.other-card:hover, .other-card:focus-visible {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
  outline: none;
}
.other-card .name { font-weight: 600; font-size: 0.9rem; padding-right: 1.4rem; }
.other-card .co2 {
  color: var(--accent);
  font-weight: 650;
  margin-top: 0.3rem;
  font-size: 0.98rem;
  font-variant-numeric: tabular-nums;
}
.other-card .go {
  position: absolute;
  top: 0.9rem;
  right: 0.85rem;
  width: 14px;
  height: 14px;
  color: var(--muted);
  transition: color 0.18s ease, transform 0.18s ease;
}
.other-card:hover .go { color: var(--accent); transform: translateX(2px); }

/* ---------- methodology ---------- */

.methodology { margin-top: 2.4rem; padding: clamp(1.4rem, 3.5vw, 2rem); }
.methodology .kicker { margin: 0 0 0.5rem; color: var(--accent); }
.methodology h2 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.6rem);
  font-weight: 600;
  letter-spacing: -0.012em;
}
.method-intro { color: var(--muted); margin: 0 0 0.6rem; max-width: 62ch; }
.method-intro em { color: var(--accent); font-style: normal; font-weight: 600; }
.method-note { font-size: 0.84rem; color: var(--muted); margin: 0 0 1.5rem; }

.method-steps {
  list-style: none;
  margin: 0 0 0.4rem;
  padding: 0;
  position: relative;
}
.method-steps::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 18px;
  bottom: 18px;
  width: 1px;
  background: var(--border);
}
.method-step {
  position: relative;
  display: grid;
  grid-template-columns: 29px 1fr;
  gap: 0 1.1rem;
  padding: 0.5rem 0;
}
.step-num {
  z-index: 1;
  width: 29px;
  height: 29px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--card);
  border: 1px solid var(--border-strong);
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.8rem;
}
.step-body h3 { margin: 0.2rem 0 0.35rem; font-size: 0.98rem; font-weight: 600; }
.step-body p { margin: 0 0 0.4rem; font-size: 0.88rem; color: var(--muted); }
.step-body p strong, .step-body li strong { color: var(--ink); font-weight: 600; }
.step-body ul { margin: 0.5rem 0 0.2rem; padding-left: 1.1rem; }
.step-body li { font-size: 0.86rem; color: var(--muted); margin-bottom: 0.35rem; }

.method-sub { margin: 1.7rem 0 0.7rem; font-size: 0.98rem; font-weight: 600; }

.method-cites {
  list-style: none;
  margin: 0;
  padding: 0;
}
.method-cites li {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 0.7rem;
  margin-bottom: 0.65rem;
  font-size: 0.84rem;
  color: var(--muted);
  line-height: 1.55;
}
.method-cites .i { width: 16px; height: 16px; color: var(--accent); margin-top: 2px; }
.method-cites strong { color: var(--ink); font-weight: 600; }

.method-mind {
  list-style: none;
  margin: 0;
  padding: 0;
}
.method-mind li {
  position: relative;
  padding-left: 1.1rem;
  margin-bottom: 0.45rem;
  font-size: 0.84rem;
  color: var(--muted);
}
.method-mind li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
}
.method-mind strong { color: var(--ink); font-weight: 600; }

.method-fine { font-size: 0.84rem; color: var(--muted); margin: 0; }
.method-fine strong { color: var(--ink); font-weight: 600; }

.methodology a { color: var(--accent); text-decoration: none; border-bottom: 1px solid var(--accent-soft); transition: border-color 0.16s ease; }
.methodology a:hover { border-bottom-color: var(--accent); }

.callout {
  background: var(--field);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 0.9rem 1.1rem;
  line-height: 1.6;
}

/* ---------- footer ---------- */

.site-footer {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 1.5rem) 2.5rem;
}
.site-footer p {
  margin: 0;
  padding-top: 1.4rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.7;
  text-align: center;
}

/* ---------- hero steps ---------- */

.hero-steps {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.8rem;
}
.hero-steps li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.86rem;
  color: var(--muted);
}
.hero-steps .i { width: 15px; height: 15px; color: var(--accent); }
.step-k {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.7rem;
}

/* ---------- data-coverage notice ---------- */

.coverage-note {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 0.7rem;
  align-items: start;
  margin: 0 0 1rem;
  padding: 0.75rem 0.95rem;
  border-radius: var(--r-md);
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  color: var(--warn-ink);
  font-size: 0.85rem;
  line-height: 1.55;
}
.coverage-note .i { width: 16px; height: 16px; margin-top: 2px; }
.coverage-note strong { font-weight: 650; }
.coverage-note.low { border-width: 1.5px; }

/* ---------- feedback ---------- */

.feedback-card, .ai-footprint-card { margin-top: 2.4rem; padding: clamp(1.4rem, 3.5vw, 2rem); }
.feedback-card .kicker, .ai-footprint-card .kicker { margin: 0 0 0.5rem; color: var(--accent); }
.feedback-card textarea { margin-top: 0; }
.ai-footprint-card .equivalents { margin-top: 1rem; }
.feedback-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 0.7rem;
}
.feedback-row input {
  flex: 1;
  min-width: 220px;
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--field);
  color: var(--ink);
  font: inherit;
  font-size: 0.88rem;
}
.feedback-row input:focus { outline: none; border-color: var(--accent); }

/* ---------- collapsed methodology ---------- */

.method-details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  list-style: none;
}
.method-details summary::-webkit-details-marker { display: none; }
.method-details .summary-text { display: block; }
.method-details .summary-title {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.6rem);
  font-weight: 600;
  letter-spacing: -0.012em;
  color: var(--ink);
}
.method-details summary .chev { width: 18px; height: 18px; color: var(--muted); transition: transform 0.18s ease; flex-shrink: 0; }
.method-details[open] summary .chev { transform: rotate(180deg); }
.method-details summary:hover .summary-title { color: var(--accent); }
.method-details[open] summary { margin-bottom: 1rem; }

/* ---------- responsive ---------- */

@media (max-width: 560px) {
  .figure-block { padding: 1rem 1.05rem; }
  .fstat { padding: 0 1rem; }
  .result-head { flex-direction: column; }
  #share-btn { align-self: flex-start; }
  .results-toolbar { justify-content: flex-start; }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}