/* involutegearcomparison.com: Gear Innovations brand (graphite + #F58220) */
:root {
  --bg-deep: #26272a; --bg: #2c2d31; --card: #35363b; --surface: #3c3d42; --elev: #45464b;
  --orange: #f58220; --orange-2: #ffad5e; --amber: #ffd08a; --red: #ff6b7d; --green: #7fd99a;
  --text: #f4f4f5; --text-2: #c4c6ca; --muted: #94969a;
  --border: rgba(245,130,32,0.22); --line: rgba(255,255,255,0.09);
  --r-sm: 6px; --r-md: 12px; --r-lg: 18px;
  --display: 'Rajdhani', sans-serif; --body: 'Inter', sans-serif; --num: 'Bebas Neue', 'Rajdhani', sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body { background: var(--bg-deep); color: var(--text); font-family: var(--body); font-size: 15px; line-height: 1.55; }
a { color: var(--orange); }
sup { font-size: 0.6em; }
.wrap { max-width: 1320px; margin: 0 auto; padding: 0 24px; }

/* top bar */
.topbar { position: sticky; top: 0; z-index: 50; background: rgba(38,39,42,0.94); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.topbar-inner { max-width: 1320px; margin: 0 auto; padding: 12px 24px; display: flex; align-items: center; gap: 24px; }
.brand img { height: 40px; width: auto; display: block; }
.topbar-title { font-family: var(--display); font-weight: 700; font-size: 1.15rem; letter-spacing: 0.04em; flex: 1; }
.topbar-title span { color: var(--muted); font-weight: 500; }
.topbar-link { font-family: var(--display); font-weight: 700; font-size: 0.85rem; letter-spacing: 0.08em; text-transform: uppercase; text-decoration: none;
  padding: 9px 16px; border: 1px solid var(--orange); border-radius: var(--r-sm); }
.topbar-link:hover { background: var(--orange); color: var(--bg-deep); }

/* intro */
.intro { padding: 46px 0 30px; background: radial-gradient(ellipse 60% 120% at 85% 0%, rgba(245,130,32,0.12), transparent 70%); }
.eyebrow { font-family: var(--display); font-weight: 700; font-size: 0.8rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--orange); margin-bottom: 10px; }
.intro h1 { font-family: var(--display); font-size: clamp(2rem, 4vw, 3rem); line-height: 1.05; margin-bottom: 12px; }
.intro p { color: var(--text-2); max-width: 760px; font-size: 1.05rem; }

/* layout */
.app { display: grid; grid-template-columns: 400px 1fr; gap: 24px; align-items: start; padding-bottom: 60px; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 22px; }
.inputs { position: sticky; top: 76px; max-height: calc(100vh - 92px); overflow-y: auto; padding: 0; }
.step { padding: 20px 22px; border-bottom: 1px solid var(--line); }
.step-head { display: flex; align-items: center; gap: 10px; font-family: var(--display); font-weight: 700; font-size: 1.1rem; margin-bottom: 14px; }
.step-head > span { width: 26px; height: 26px; border-radius: 50%; background: var(--orange); color: var(--bg-deep); display: inline-flex; align-items: center; justify-content: center; font-size: 0.95rem; }
.step-head .seg { margin-left: auto; }
.note, .hint { font-size: 0.8rem; color: var(--muted); margin-top: 10px; }
.hint:empty { display: none; }
.hint.warn { color: var(--amber); }

.type-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.type-tile input { position: absolute; opacity: 0; pointer-events: none; }
.tile { display: block; padding: 10px 12px; border: 1px solid var(--line); border-radius: var(--r-md); background: var(--surface); cursor: pointer; transition: border-color .15s, background .15s; }
.tile b { display: block; font-family: var(--display); font-size: 1rem; }
.tile small { color: var(--muted); font-size: 0.75rem; }
.type-tile input:checked + .tile { border-color: var(--orange); background: rgba(245,130,32,0.12); }
.type-tile input:focus-visible + .tile { outline: 2px solid var(--orange); outline-offset: 2px; }

.fields { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.fields.two { grid-template-columns: 1fr 1fr; }
.f { display: flex; flex-direction: column; gap: 5px; font-size: 0.78rem; color: var(--text-2); }
.f-wide { grid-column: 1 / -1; }
.f span { display: flex; justify-content: space-between; }
.f output { color: var(--orange); font-weight: 600; }
input[type=number], input:not([type]), input[type=email], input[type=password], input[type=search], select, textarea {
  width: 100%; background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: var(--r-sm);
  padding: 9px 10px; font: inherit; font-size: 0.95rem;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--orange); box-shadow: 0 0 0 3px rgba(245,130,32,0.18); }
input[type=range] { accent-color: var(--orange); width: 100%; }
.computed { grid-column: 1 / -1; font-size: 0.82rem; color: var(--amber); }
[hidden] { display: none !important; }

.seg { display: inline-flex; background: var(--bg); border: 1px solid var(--line); border-radius: 999px; padding: 3px; }
.seg-wide { display: flex; margin-bottom: 14px; }
.seg-wide label { flex: 1; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: block; padding: 6px 12px; border-radius: 999px; font-size: 0.8rem; font-weight: 600; color: var(--text-2); cursor: pointer; text-align: center; white-space: nowrap; }
.seg input:checked + span { background: var(--orange); color: var(--bg-deep); }
.seg input:focus-visible + span { outline: 2px solid var(--orange); }

.actions { display: flex; gap: 10px; padding: 18px 22px 8px; }
.btn { flex: 1; font-family: var(--display); font-weight: 700; font-size: 0.95rem; letter-spacing: 0.08em; text-transform: uppercase; padding: 13px 16px; border-radius: var(--r-sm); border: 1px solid var(--orange); cursor: pointer; transition: background .15s, color .15s, transform .15s; }
.btn-primary { background: var(--orange); color: var(--bg-deep); }
.btn-primary:hover { background: var(--orange-2); }
.btn-secondary { background: transparent; color: var(--orange); }
.btn-secondary:hover { background: rgba(245,130,32,0.12); }
.btn:disabled { opacity: 0.55; cursor: wait; }
.saved { padding: 0 22px 18px; font-size: 0.8rem; color: var(--green); min-height: 1.2em; }

/* results */
.results { display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.viz-panel { padding: 0; overflow: hidden; }
.viz-bar { display: flex; gap: 12px; align-items: center; justify-content: space-between; padding: 12px 14px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.viz-bar select { width: auto; }
#viz { display: block; width: 100%; height: 400px; }

.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 18px; }
.kpi-num { font-family: var(--num); font-size: 2.6rem; line-height: 1; color: var(--orange); }
.kpi-label { font-size: 0.82rem; color: var(--text-2); margin-top: 6px; }
.kpi-sub { font-size: 0.75rem; color: var(--muted); margin-top: 6px; }
.kpi.hero { background: linear-gradient(135deg, rgba(245,130,32,0.18), rgba(245,130,32,0.06)); border-color: var(--border); }

h3 { font-family: var(--display); font-size: 1.25rem; margin-bottom: 4px; }
.sub { color: var(--text-2); font-size: 0.9rem; margin-bottom: 14px; }
.reduce-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.reduce-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-md); padding: 16px; cursor: pointer; text-align: left; color: inherit; font: inherit; }
.reduce-card.active { border-color: var(--orange); }
.reduce-card b { display: block; font-family: var(--display); font-size: 1rem; margin-bottom: 8px; }
.reduce-big { font-family: var(--num); font-size: 2rem; color: var(--orange); line-height: 1; }
.reduce-card dl { display: grid; grid-template-columns: auto auto; gap: 2px 10px; font-size: 0.78rem; margin-top: 10px; color: var(--text-2); }
.reduce-card dd { text-align: right; color: var(--text); font-weight: 600; }

table.cmp { width: 100%; border-collapse: collapse; font-size: 0.88rem; margin: 6px 0 16px; }
table.cmp caption { text-align: left; font-family: var(--display); font-weight: 700; color: var(--text-2); padding: 4px 0 6px; }
table.cmp th, table.cmp td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: right; }
table.cmp th:first-child, table.cmp td:first-child { text-align: left; color: var(--text-2); }
table.cmp thead th { font-family: var(--display); font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
table.cmp thead th:last-child { color: var(--orange); }
table.cmp td:last-child { color: var(--text); font-weight: 600; background: rgba(245,130,32,0.06); }
.better { color: var(--green); font-size: 0.75rem; margin-left: 6px; font-weight: 600; }

.pm-bars { display: grid; gap: 10px; margin-top: 6px; }
.pm-row { display: grid; grid-template-columns: 220px 1fr 90px; gap: 12px; align-items: center; font-size: 0.85rem; }
.pm-track { height: 10px; background: var(--bg); border-radius: 999px; overflow: hidden; }
.pm-fill { height: 100%; border-radius: 999px; transition: width .4s ease; }
.pm-row b { text-align: right; }

.warnings:empty { display: none; }
.warn-item { background: rgba(255,208,138,0.08); border: 1px solid rgba(255,208,138,0.3); color: var(--amber); padding: 10px 14px; border-radius: var(--r-md); font-size: 0.85rem; margin-bottom: 8px; }
.disclaimer { font-size: 0.78rem; color: var(--muted); }

/* modal */
.modal { margin: auto; border: 1px solid var(--border); border-radius: var(--r-lg); background: var(--card); color: var(--text); padding: 28px; max-width: 620px; width: calc(100% - 32px); }
.modal::backdrop { background: rgba(10,10,12,0.75); }
.modal h2 { font-family: var(--display); font-size: 1.6rem; margin-bottom: 6px; }
.modal .actions { padding: 18px 0 0; }
.check { display: flex; gap: 8px; align-items: center; font-size: 0.85rem; color: var(--text-2); }
.check input { accent-color: var(--orange); width: 16px; height: 16px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-error { color: var(--red); font-size: 0.85rem; min-height: 1.2em; margin-top: 8px; }

.foot { border-top: 1px solid var(--line); padding: 26px 0; background: var(--bg-deep); }
.foot-inner { display: flex; align-items: center; gap: 22px; }
.foot-inner p { flex: 1; font-size: 0.78rem; color: var(--muted); }

@media (max-width: 1100px) {
  .app { grid-template-columns: 1fr; }
  .inputs { position: static; max-height: none; }
  .kpis { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .topbar-title { display: none; }
  .topbar-inner { justify-content: space-between; padding: 10px 16px; }
  .fields, .fields.two, .reduce-grid { grid-template-columns: 1fr; }
  .kpis { grid-template-columns: 1fr 1fr; }
  .kpi-num { font-size: 2rem; }
  #viz { height: 300px; }
  .pm-row { grid-template-columns: 1fr 70px; }
  .pm-row .pm-track { grid-column: 1 / -1; grid-row: 2; }
  .foot-inner { flex-direction: column; text-align: center; }
  .viz-bar .seg span { padding: 6px 9px; font-size: 0.74rem; }
}

.kpi-u { font-family: var(--body); font-size: 0.9rem; font-weight: 600; color: var(--orange-2); letter-spacing: 0; }
.fields > .note, .fields > .hint { grid-column: 1 / -1; }