:root {
    --bg: #090d0b;
    --surface: #101714;
    --surface-raised: #151e1a;
    --surface-soft: #1a2520;
    --line: rgba(255, 255, 255, 0.09);
    --line-strong: rgba(105, 240, 174, 0.25);
    --text: #f3f7f5;
    --muted: #91a099;
    --green: #38e37f;
    --green-deep: #18b75b;
    --green-soft: rgba(56, 227, 127, 0.11);
    --amber: #ffb547;
    --danger: #ff6262;
    --shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 11px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 108px; }
body {
    margin: 0;
    background:
        radial-gradient(circle at 15% -10%, rgba(56, 227, 127, 0.13), transparent 31rem),
        radial-gradient(circle at 92% 16%, rgba(255, 181, 71, 0.06), transparent 26rem),
        var(--bg);
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.5;
}

button, input, textarea, select { font: inherit; }
a { color: inherit; }
.app-shell { min-height: 100vh; }

.topbar {
    position: sticky;
    z-index: 50;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 72px;
    padding: 10px clamp(18px, 4vw, 64px);
    border-bottom: 1px solid var(--line);
    background: rgba(9, 13, 11, 0.88);
    backdrop-filter: blur(18px);
}

.brand { display: inline-flex; gap: 11px; align-items: center; text-decoration: none; }
.brand img { border-radius: 12px; box-shadow: 0 0 26px rgba(56, 227, 127, 0.17); }
.brand-copy { display: grid; line-height: 1.1; }
.brand-copy strong { font-size: 17px; letter-spacing: -0.02em; }
.brand-copy small { margin-top: 4px; color: var(--green); font-size: 10px; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; }
.topbar-actions { display: flex; gap: 12px; align-items: center; }
.connection-pill { display: inline-flex; gap: 8px; align-items: center; color: var(--muted); font-size: 12px; }
.connection-pill i { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 12px var(--green); }

.desktop-nav {
    position: fixed;
    z-index: 51;
    top: 18px;
    left: 50%;
    display: flex;
    gap: 5px;
    padding: 5px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(16, 23, 20, 0.92);
    transform: translateX(-50%);
}
.nav-link { padding: 8px 15px; border-radius: 999px; color: var(--muted); font-size: 13px; font-weight: 700; text-decoration: none; }
.nav-link:hover, .nav-link.active { background: var(--surface-soft); color: var(--text); }

.container { width: min(1180px, calc(100% - 36px)); margin: 0 auto; padding: 42px 0 58px; }
.hero { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center; min-height: 520px; padding: 54px clamp(24px, 5vw, 70px); overflow: hidden; border: 1px solid var(--line); border-radius: 30px; background: linear-gradient(135deg, rgba(21, 30, 26, 0.96), rgba(10, 15, 12, 0.95)); box-shadow: var(--shadow); }
.hero-copy { position: relative; z-index: 2; }
.eyebrow, .section-kicker { color: var(--green); font-size: 11px; font-weight: 850; letter-spacing: 0.16em; text-transform: uppercase; }
.eyebrow { display: inline-flex; gap: 8px; align-items: center; padding: 7px 11px; border: 1px solid var(--line-strong); border-radius: 999px; background: var(--green-soft); }
.pulse-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 0 rgba(56, 227, 127, 0.5); animation: pulse 2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 9px rgba(56, 227, 127, 0); } 100% { box-shadow: 0 0 0 0 rgba(56, 227, 127, 0); } }
.hero h1 { margin: 23px 0 18px; font-size: clamp(42px, 6vw, 72px); line-height: 0.99; letter-spacing: -0.055em; }
.hero h1 span { color: var(--green); }
.hero-copy > p { max-width: 610px; margin: 0 0 28px; color: #adbbb4; font-size: 17px; }
.hero-console { position: relative; padding: 18px; border: 1px solid var(--line-strong); border-radius: 24px; background: rgba(6, 10, 8, 0.74); box-shadow: inset 0 0 50px rgba(56, 227, 127, 0.035); }
.hero-console::before { content: ""; position: absolute; inset: -80px; z-index: -1; background: radial-gradient(circle, rgba(56, 227, 127, 0.16), transparent 62%); }
.console-head { display: flex; justify-content: space-between; color: #6f7c76; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 10px; letter-spacing: .1em; }
.console-live { color: var(--green); }
.console-orb { display: grid; place-items: center; width: 230px; height: 230px; margin: 18px auto 8px; background: radial-gradient(circle, rgba(56,227,127,.16), transparent 64%); }
.console-orb img { width: 100%; height: 100%; object-fit: contain; filter: drop-shadow(0 18px 24px rgba(0,0,0,.45)); }
.hero-console > p { max-width: 360px; margin: 0 auto 28px; color: #c9d3ce; font-size: 15px; text-align: center; }
.console-stats { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.console-stats span { display: grid; gap: 3px; padding: 16px 8px 4px; color: var(--muted); font-size: 10px; text-align: center; }
.console-stats strong { color: var(--text); font-size: 14px; }

.button { display: inline-flex; gap: 9px; align-items: center; justify-content: center; min-height: 46px; padding: 11px 18px; border: 1px solid transparent; border-radius: var(--radius-sm); color: #07110b; font-weight: 800; text-decoration: none; cursor: pointer; transition: transform .16s ease, border-color .16s ease, background .16s ease; }
.button:hover { transform: translateY(-1px); }
.button-primary { background: linear-gradient(135deg, var(--green), #20c867); box-shadow: 0 10px 30px rgba(56, 227, 127, 0.14); }
.button-primary:hover { background: #60ef98; }
.button-secondary { border-color: var(--line-strong); background: var(--green-soft); color: var(--green); }
.button-outline { border-color: var(--line); background: transparent; color: var(--text); }
.button-answer { border-color: var(--line-strong); background: var(--surface-soft); color: var(--text); }
.button-wide { width: 100%; }
.button-compact { min-height: 36px; padding: 7px 12px; font-size: 12px; }
.button-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.mode-panel { display: flex; align-items: center; justify-content: space-between; margin: 34px 0 18px; padding: 21px 24px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: rgba(16, 23, 20, 0.74); }
.mode-panel h2 { margin: 3px 0 0; font-size: 21px; }
.mode-switch { display: flex; gap: 5px; padding: 5px; border: 1px solid var(--line); border-radius: 13px; background: #090d0b; }
.mode-button { min-height: 42px; padding: 9px 18px; border: 0; border-radius: 9px; background: transparent; color: var(--muted); font-weight: 800; cursor: pointer; }
.mode-button.active { background: var(--surface-soft); color: var(--text); box-shadow: inset 0 0 0 1px var(--line); }
.mode-button:hover { color: var(--text); }
.button-pressed { transform: scale(.98) !important; }

.workspace-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(280px, .65fr); gap: 18px; align-items: start; }
.result-grid { margin-top: 18px; grid-template-columns: minmax(280px, .72fr) minmax(0, 1.28fr); }
.side-stack { display: grid; gap: 18px; }
.card { margin: 0; padding: clamp(20px, 3vw, 30px); border: 1px solid var(--line); border-radius: var(--radius-lg); background: linear-gradient(145deg, rgba(21, 30, 26, .94), rgba(14, 20, 17, .96)); box-shadow: 0 16px 44px rgba(0, 0, 0, 0.16); }
.card-accent { border-color: rgba(56, 227, 127, 0.17); }
.section-heading { display: flex; gap: 15px; align-items: flex-start; margin-bottom: 22px; }
.section-heading > div:nth-child(2) { flex: 1; }
.section-heading h2 { margin: 3px 0 4px; font-size: 25px; letter-spacing: -0.025em; }
.section-heading p { margin: 0; color: var(--muted); font-size: 14px; }
.section-heading.compact { margin-bottom: 18px; }
.section-heading.compact h2 { font-size: 20px; }
.section-icon { display: grid; flex: 0 0 43px; place-items: center; height: 43px; border: 1px solid var(--line-strong); border-radius: 12px; background: var(--green-soft); color: var(--green); font: 800 11px ui-monospace, monospace; }
.section-icon.amber { border-color: rgba(255,181,71,.3); background: rgba(255,181,71,.1); color: var(--amber); font-size: 20px; }
.section-icon.success { font-size: 18px; }

.field-grid { display: grid; gap: 12px; }
.field-grid-2 { grid-template-columns: repeat(2, 1fr); }
.field-grid-3 { grid-template-columns: repeat(3, 1fr); }
.field { display: block; margin: 0 0 13px; text-align: left; }
.field > span { display: flex; justify-content: space-between; margin: 0 0 7px; color: #b9c5bf; font-size: 12px; font-weight: 750; }
.field em { color: var(--green); font-size: 9px; font-style: normal; letter-spacing: .08em; text-transform: uppercase; }
input, textarea, select { display: block; width: 100%; margin: 0; padding: 13px 14px; border: 1px solid var(--line); border-radius: var(--radius-sm); outline: none; background: rgba(4, 8, 6, .7); color: var(--text); font-size: 15px; transition: border-color .15s, box-shadow .15s; }
input::placeholder, textarea::placeholder { color: #57645e; }
input:focus, textarea:focus, select:focus { border-color: rgba(56, 227, 127, .5); box-shadow: 0 0 0 3px rgba(56, 227, 127, .08); }
textarea { min-height: 108px; resize: vertical; }
select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 18px) 52%, calc(100% - 13px) 52%; background-size: 5px 5px; background-repeat: no-repeat; }
.vin-row { display: flex; gap: 10px; align-items: end; }
.field-grow { flex: 1; }
.status-line { margin: -3px 0 14px; padding: 9px 11px; border-left: 2px solid var(--green); border-radius: 4px 8px 8px 4px; background: rgba(0,0,0,.18); color: var(--muted); font-size: 12px; text-align: left; }
.connected-wren-option { display: flex; gap: 11px; align-items: flex-start; margin: 4px 0 10px; padding: 13px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: rgba(56,227,127,.035); color: #dbe6e0; text-align: left; }
.connected-wren-option input { width: auto; margin-top: 3px; accent-color: var(--green); }
.connected-wren-option span { display: grid; gap: 3px; }
.connected-wren-option small { color: var(--muted); line-height: 1.45; }
.connected-wren-option:has(input:disabled) { opacity: .62; }
.ai-status { margin: 0 0 13px; color: var(--muted); font-size: 11px; text-align: left; }
.ai-status.connected { color: var(--green); }
.ai-status.error { color: var(--amber); }

.trust-card { display: flex; gap: 14px; padding: 22px; border: 1px solid rgba(255,181,71,.16); border-radius: var(--radius-lg); background: rgba(255,181,71,.055); }
.trust-icon { display: grid; flex: 0 0 34px; place-items: center; height: 34px; border-radius: 50%; background: rgba(255,181,71,.15); color: var(--amber); font-weight: 900; }
.trust-card strong { font-size: 14px; }
.trust-card p { margin: 5px 0 0; color: var(--muted); font-size: 12px; }

.diagnosis-card { display: grid; grid-template-columns: 72px 1fr; gap: 22px; margin-top: 18px; border-color: rgba(56,227,127,.28); background: linear-gradient(120deg, rgba(23, 41, 32, .98), rgba(12, 19, 15, .98)); }
.wren-avatar { display: grid; place-items: center; width: 68px; height: 68px; overflow: hidden; border: 1px solid var(--line-strong); border-radius: 18px; background: radial-gradient(circle, rgba(56,227,127,.16), rgba(56,227,127,.04)); }
.wren-avatar img { width: 82px; height: 82px; object-fit: contain; transform: translateY(8px) scale(1.42); transform-origin: top center; }
.diagnosis-content h2 { margin: 3px 0 15px; }
.diagnosis-title-row { display: flex; gap: 12px; align-items: center; justify-content: space-between; }
.diagnosis-source { padding: 5px 8px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--green); font-size: 9px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.diagnosis-source.connected { border-color: rgba(56,227,127,.5); background: rgba(56,227,127,.1); }
.wren-message { padding: 16px 18px; border: 1px solid var(--line); border-radius: 4px 15px 15px 15px; background: rgba(0,0,0,.22); color: #dce5e0; }
.wren-message h3 { margin: 16px 0 7px; color: var(--green); font-size: 14px; }
.wren-message ul { margin: 7px 0; padding-left: 20px; }
.wren-message li { margin: 5px 0; }
.ai-warning { margin-top: 12px; padding: 10px 12px; border-left: 3px solid var(--amber); border-radius: 5px; background: rgba(255,181,71,.08); color: #f0d39f; }
.answer-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 13px; }
.record-summary { margin: 15px 0 18px; padding: 16px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: rgba(0,0,0,.2); color: #d8e1dc; line-height: 1.7; }

.wiring-card, .garage-card { margin-top: 18px; }
.safety-badge { align-self: center; padding: 6px 9px; border: 1px solid rgba(255,181,71,.24); border-radius: 7px; background: rgba(255,181,71,.08); color: var(--amber); font-size: 9px; font-weight: 850; letter-spacing: .09em; white-space: nowrap; }
.wiring-layout { display: grid; grid-template-columns: minmax(260px, .68fr) minmax(0, 1.32fr); gap: 20px; }
.wiring-controls { padding: 18px; border: 1px solid var(--line); border-radius: var(--radius-md); background: rgba(0,0,0,.16); }
.divider { display: flex; align-items: center; margin: 23px 0 17px; color: #627069; font-size: 9px; font-weight: 800; letter-spacing: .13em; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.divider span { padding: 0 10px; }
.authorization-label { display: flex; gap: 10px; align-items: flex-start; margin: 13px 0; color: #b5c1bb; font-size: 12px; text-align: left; }
.authorization-label input { width: auto; margin-top: 3px; accent-color: var(--green); }
.upload-zone { display: grid; gap: 3px; margin: 13px 0; padding: 18px; border: 1px dashed rgba(56,227,127,.3); border-radius: var(--radius-sm); background: rgba(56,227,127,.04); color: var(--green); text-align: center; cursor: pointer; }
.upload-zone span { color: var(--muted); font-size: 11px; }
.visually-hidden-file { position: absolute; width: 1px; height: 1px; overflow: hidden; opacity: 0; }
.diagram-stage { min-width: 0; }
.diagram-viewer { display: grid; place-items: center; min-height: 360px; padding: 18px; overflow: auto; border: 1px solid var(--line); border-radius: var(--radius-md); background: radial-gradient(circle at center, rgba(56,227,127,.04), transparent 60%), #080c0a; color: var(--muted); }
.diagram-viewer svg { width: 100%; min-width: 620px; height: auto; }
.diagram-viewer img { display: block; max-width: 100%; max-height: 700px; margin: auto; }
.test-points { margin-top: 12px; padding: 15px; border-left: 3px solid var(--green); border-radius: 4px 10px 10px 4px; background: rgba(56,227,127,.055); color: #c9d3ce; line-height: 1.6; text-align: left; }
.test-points:empty { display: none; }
.diagram-wire-power { stroke: var(--danger); }
.diagram-wire-control { stroke: #ffd35a; }
.diagram-wire-ground { stroke: #69f0ae; }

.garage-card .section-heading { align-items: center; }
.garage-card .section-heading .button { margin-left: auto; }
.empty-state { display: grid; place-items: center; min-height: 190px; padding: 30px; border: 1px dashed var(--line); border-radius: var(--radius-md); color: var(--muted); text-align: center; }
.empty-state > span { display: grid; place-items: center; width: 44px; height: 44px; margin-bottom: 9px; border: 1px solid var(--line-strong); border-radius: 50%; color: var(--green); font-size: 25px; }
.empty-state strong { color: var(--text); }
.empty-state small { margin-top: 4px; }
#garageInfo, #historyList { margin-top: 18px; text-align: left; }
.vehicle-card, .repair-card { margin-top: 12px; padding: 17px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: rgba(0,0,0,.2); line-height: 1.65; }
.vehicle-card button { margin-top: 12px; padding: 9px 13px; border: 1px solid var(--line-strong); border-radius: 9px; background: var(--green-soft); color: var(--green); font-weight: 800; cursor: pointer; }
.vehicle-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.vehicle-actions button { margin-right: 0; }
.vehicle-actions .danger-action { border-color: rgba(255,98,98,.25); background: rgba(255,98,98,.08); color: #ff8d8d; }

.app-footer { display: flex; gap: 18px; align-items: center; margin: 40px 0 10px; padding: 22px 4px; border-top: 1px solid var(--line); color: #66736d; font-size: 11px; }
.app-footer a { color: var(--green); }
.footer-brand { display: flex; gap: 9px; align-items: center; margin-right: auto; color: #b7c1bc; }
.footer-brand img { border-radius: 9px; }
.mobile-nav { display: none; }
.hidden { display: none !important; }

@media (max-width: 920px) {
    .desktop-nav { display: none; }
    .hero { grid-template-columns: 1fr; min-height: auto; }
    .hero-console { display: none; }
    .workspace-grid, .result-grid, .wiring-layout { grid-template-columns: 1fr; }
    .side-stack:has(> #proFields.hidden) { display: none; }
    .app-footer { flex-wrap: wrap; }
}

@media (max-width: 640px) {
    html { scroll-padding-top: 82px; }
    body { padding-bottom: calc(76px + env(safe-area-inset-bottom)); }
    .topbar { min-height: 64px; padding: 8px 15px; }
    .brand img { width: 40px; height: 40px; }
    .brand-copy strong { font-size: 15px; }
    .connection-pill span { display: none; }
    .container { width: min(100% - 24px, 1180px); padding-top: 18px; }
    .hero { padding: 34px 22px; border-radius: 22px; }
    .hero h1 { font-size: 43px; }
    .hero-copy > p { font-size: 15px; }
    .mode-panel { display: grid; gap: 16px; padding: 18px; }
    .mode-switch { width: 100%; }
    .mode-button { flex: 1; }
    .card { padding: 20px 17px; border-radius: 19px; }
    .section-heading { gap: 11px; }
    .section-heading h2 { font-size: 21px; }
    .section-icon { flex-basis: 38px; width: 38px; height: 38px; }
    .field-grid-2, .field-grid-3 { grid-template-columns: 1fr; gap: 0; }
    .vin-row { display: grid; gap: 0; }
    .diagnosis-card { grid-template-columns: 1fr; }
    .wren-avatar { width: 48px; height: 48px; }
    .wren-avatar img { width: 59px; height: 59px; }
    .answer-actions { display: grid; }
    .button-answer { width: 100%; }
    .wiring-card .section-heading, .garage-card .section-heading { flex-wrap: wrap; }
    .safety-badge { margin-left: 49px; }
    .garage-card .section-heading .button { width: 100%; margin: 8px 0 0; }
    .button-row { grid-template-columns: 1fr; }
    .diagram-viewer { min-height: 260px; }
    .app-footer { display: grid; gap: 11px; padding-bottom: 15px; }
    .mobile-nav { position: fixed; z-index: 60; right: 10px; bottom: 9px; left: 10px; display: grid; grid-template-columns: repeat(4, 1fr); padding: 7px 4px calc(7px + env(safe-area-inset-bottom)); border: 1px solid var(--line); border-radius: 18px; background: rgba(14, 20, 17, .95); box-shadow: 0 15px 45px rgba(0,0,0,.5); backdrop-filter: blur(18px); }
    .mobile-nav a { display: grid; gap: 2px; place-items: center; padding: 4px 2px; color: #839189; font-size: 9px; font-weight: 750; text-decoration: none; }
    .mobile-nav a span { color: var(--green); font-size: 19px; line-height: 1; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}