/* /sonar: acoustic gesture control. * * Page-scoped tokens layer over /style.css so the page follows the site theme * in both directions (the theme boot script stamps data-theme on ). * The one colour that carries meaning is --sn-live: it is the "something moved" * green, and it is the only place the page uses saturation. */ :root { --sn-radius: 14px; --sn-border: rgba(255, 255, 255, 0.08); --sn-border-strong: rgba(255, 255, 255, 0.2); --sn-surface: rgba(255, 255, 255, 0.03); --sn-surface-2: rgba(255, 255, 255, 0.06); --sn-surface-3: rgba(255, 255, 255, 0.1); --sn-accent: #7dd3fc; --sn-accent-ink: #04141f; --sn-muted: rgba(255, 255, 255, 0.6); --sn-live: #4ade80; --sn-warn: #fbbf24; --sn-error: #f87171; } :root[data-theme='light'] { --sn-border: rgba(0, 0, 0, 0.1); --sn-border-strong: rgba(0, 0, 0, 0.24); --sn-surface: rgba(0, 0, 0, 0.03); --sn-surface-2: rgba(0, 0, 0, 0.05); --sn-surface-3: rgba(0, 0, 0, 0.09); --sn-accent: #0369a1; --sn-accent-ink: #f8fbff; --sn-muted: rgba(0, 0, 0, 0.58); --sn-live: #15803d; --sn-warn: #a16207; --sn-error: #b91c1c; } /* Announced by screen readers, never painted. */ .sn-visually-hidden { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; } .sn-page { min-height: 100vh; background: var(--bg, #000); color: var(--text, #fafafa); font-family: 'Inter', system-ui, -apple-system, sans-serif; -webkit-font-smoothing: antialiased; } .sn-page main { max-width: 1360px; margin: 0 auto; padding: 0 clamp(16px, 4vw, 40px) 96px; } /* ── hero ─────────────────────────────────────────────────────────────── */ .sn-hero { padding: clamp(40px, 7vw, 88px) 0 clamp(24px, 4vw, 40px); max-width: 780px; } .sn-hero-chip { display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px; border: 1px solid var(--sn-border); border-radius: 6px; background: var(--sn-surface); font-size: 12px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--sn-muted); } .sn-hero-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--sn-live); box-shadow: 0 0 0 0 color-mix(in srgb, var(--sn-live) 60%, transparent); animation: sn-pulse 2.4s ease-out infinite; } @keyframes sn-pulse { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--sn-live) 55%, transparent); } 70% { box-shadow: 0 0 0 9px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } } .sn-hero h1 { margin: 18px 0 14px; font-size: clamp(32px, 5.2vw, 54px); line-height: 1.04; letter-spacing: -0.03em; } .sn-hero-lede { margin: 0 0 24px; font-size: clamp(15px, 1.5vw, 18px); line-height: 1.6; color: var(--sn-muted); } .sn-hero-lede strong { color: var(--text, #fafafa); } .sn-hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px; } .sn-hero-note { margin: 0; font-size: 13px; line-height: 1.6; color: var(--sn-muted); max-width: 62ch; } .sn-hero-note strong { color: var(--sn-warn); } /* ── buttons ──────────────────────────────────────────────────────────── */ .sn-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 18px; border-radius: 10px; border: 1px solid var(--sn-border); background: var(--sn-surface-2); color: inherit; font: inherit; font-size: 14px; font-weight: 500; text-decoration: none; cursor: pointer; transition: background 0.16s ease, border-color 0.16s ease, transform 0.12s ease; } .sn-btn:hover { background: var(--sn-surface-3); border-color: var(--sn-border-strong); } .sn-btn:active { transform: translateY(1px); } .sn-btn:focus-visible { outline: 2px solid var(--sn-accent); outline-offset: 2px; } .sn-btn[disabled] { opacity: 0.45; cursor: not-allowed; transform: none; } .sn-btn--primary { background: var(--sn-accent); border-color: transparent; color: var(--sn-accent-ink); font-weight: 600; } .sn-btn--primary:hover { background: color-mix(in srgb, var(--sn-accent) 88%, white); } .sn-btn--ghost { background: transparent; } /* ── alerts ───────────────────────────────────────────────────────────── */ .sn-alert { margin: 0 0 28px; padding: 18px 20px; border-radius: var(--sn-radius); border: 1px solid var(--sn-border-strong); background: var(--sn-surface); } .sn-alert h2 { margin: 0 0 8px; font-size: 16px; } .sn-alert p { margin: 0 0 10px; font-size: 14px; line-height: 1.6; color: var(--sn-muted); } .sn-alert p:last-of-type { margin-bottom: 0; } .sn-alert--warn { border-color: color-mix(in srgb, var(--sn-warn) 45%, transparent); } .sn-alert--error { border-color: color-mix(in srgb, var(--sn-error) 55%, transparent); } .sn-alert--error h2 { color: var(--sn-error); } .sn-alert .sn-btn { margin-top: 6px; } /* ── console: stage + side panels ─────────────────────────────────────── */ .sn-console { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.9fr); gap: 20px; align-items: start; } .sn-stage-wrap { position: relative; border-radius: var(--sn-radius); border: 1px solid var(--sn-border); background: radial-gradient(120% 80% at 50% 0%, var(--sn-surface-2), transparent 70%), var(--sn-surface); overflow: hidden; } .sn-stage { position: relative; aspect-ratio: 4 / 3; min-height: 380px; display: grid; place-items: center; } .sn-stage canvas { display: block; } .sn-stage-overlay { position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; gap: 8px; padding: 24px; text-align: center; pointer-events: none; } .sn-stage-title { margin: 0; font-size: 16px; font-weight: 600; } .sn-stage-sub { margin: 0; font-size: 13px; line-height: 1.6; color: var(--sn-muted); max-width: 44ch; } .sn-spinner { width: 26px; height: 26px; border-radius: 50%; border: 2px solid var(--sn-border-strong); border-top-color: var(--sn-accent); animation: sn-spin 0.8s linear infinite; } @keyframes sn-spin { to { transform: rotate(360deg); } } /* HUD over the stage */ .sn-hud { position: absolute; left: 14px; right: 14px; bottom: 14px; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--sn-border); background: color-mix(in srgb, var(--bg, #000) 70%, transparent); display: grid; gap: 8px; transition: border-color 0.2s ease; } .sn-hud[data-direction='approaching'], .sn-hud[data-direction='away'] { border-color: color-mix(in srgb, var(--sn-live) 55%, transparent); } .sn-hud[data-direction='weak-tone'] { border-color: color-mix(in srgb, var(--sn-warn) 55%, transparent); } .sn-hud-row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; font-size: 14px; } .sn-hud-row--small { font-size: 12px; color: var(--sn-muted); font-variant-numeric: tabular-nums; } .sn-hud-label { font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--sn-muted); } .sn-hud-value { font-weight: 600; text-align: right; } .sn-meter { height: 5px; border-radius: 6px; background: var(--sn-surface-3); overflow: hidden; } .sn-meter-fill { display: block; height: 100%; width: 0%; border-radius: inherit; background: var(--sn-accent); transition: width 0.08s linear, background 0.2s ease; } .sn-meter-fill.is-hot { background: var(--sn-live); } /* Calibration curtain */ .sn-calibrating { position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; gap: 10px; padding: 28px; text-align: center; background: color-mix(in srgb, var(--bg, #000) 82%, transparent); } .sn-calibrating-title { margin: 0; font-size: 17px; font-weight: 600; } .sn-calibrating-sub { margin: 0; font-size: 13px; line-height: 1.6; color: var(--sn-muted); max-width: 46ch; } .sn-progress { width: min(280px, 70vw); height: 4px; border-radius: 6px; background: var(--sn-surface-3); overflow: hidden; } .sn-progress span { display: block; height: 100%; width: 0%; background: var(--sn-accent); transition: width 0.12s linear; } /* ── side panels ──────────────────────────────────────────────────────── */ .sn-side { display: grid; gap: 20px; } .sn-panel { padding: 18px; border-radius: var(--sn-radius); border: 1px solid var(--sn-border); background: var(--sn-surface); } .sn-panel-title { margin: 0 0 6px; font-size: 14px; letter-spacing: 0.02em; } .sn-panel-sub { margin: 0 0 12px; font-size: 12.5px; line-height: 1.6; color: var(--sn-muted); } .sn-signal { display: block; width: 100%; height: 180px; border-radius: 10px; border: 1px solid var(--sn-border); background: color-mix(in srgb, var(--bg, #000) 55%, transparent); } .sn-signal-legend { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; margin: 10px 0 0; font-size: 11.5px; color: var(--sn-muted); } .sn-key { width: 14px; height: 2px; border-radius: 2px; display: inline-block; } .sn-key--base { background: rgba(255, 255, 255, 0.4); } :root[data-theme='light'] .sn-key--base { background: rgba(0, 0, 0, 0.4); } .sn-key--live { background: var(--sn-live); } .sn-key--carrier { background: var(--sn-border-strong); } /* Modes */ .sn-modes { border: 0; margin: 0 0 16px; padding: 0; } .sn-modes legend { padding: 0; font-size: 12px; letter-spacing: 0.05em; text-transform: uppercase; color: var(--sn-muted); } .sn-modes-note { margin: 8px 0 10px; font-size: 12.5px; line-height: 1.6; color: var(--sn-muted); } .sn-modes-row { display: flex; flex-wrap: wrap; gap: 8px; } .sn-mode { display: inline-flex; align-items: center; gap: 7px; padding: 7px 12px; border-radius: 6px; border: 1px solid var(--sn-border); background: var(--sn-surface-2); font-size: 13px; cursor: pointer; transition: border-color 0.16s ease, background 0.16s ease; } .sn-mode:hover { border-color: var(--sn-border-strong); } .sn-mode:has(input:checked) { border-color: var(--sn-accent); background: color-mix(in srgb, var(--sn-accent) 14%, transparent); } .sn-mode:has(input:focus-visible) { outline: 2px solid var(--sn-accent); outline-offset: 2px; } /* Controls */ .sn-control { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 10px; margin-bottom: 12px; font-size: 13px; } .sn-control label { color: var(--sn-muted); } .sn-control output { font-variant-numeric: tabular-nums; color: var(--sn-muted); min-width: 4ch; text-align: right; } .sn-control select, .sn-control input[type='range'] { width: 100%; } .sn-control select { grid-column: 2 / -1; padding: 7px 10px; border-radius: 8px; border: 1px solid var(--sn-border); background: var(--sn-surface-2); color: inherit; font: inherit; font-size: 13px; } .sn-control select:focus-visible, .sn-control input:focus-visible { outline: 2px solid var(--sn-accent); outline-offset: 2px; } .sn-toggles { display: grid; gap: 4px; margin: 14px 0; font-size: 13px; color: var(--sn-muted); } .sn-toggles label { display: flex; align-items: center; gap: 8px; padding: 4px 6px; margin-left: -6px; border-radius: 7px; cursor: pointer; transition: background 0.16s ease, color 0.16s ease; } .sn-toggles label:hover { background: var(--sn-surface-2); color: inherit; } .sn-toggles label:active { background: var(--sn-surface-3); } .sn-toggles label:has(input:checked) { color: inherit; } .sn-toggles label:has(input:focus-visible) { outline: 2px solid var(--sn-accent); outline-offset: 1px; } .sn-toggles input { accent-color: var(--sn-accent); cursor: pointer; } .sn-control-actions { display: flex; flex-wrap: wrap; gap: 8px; } .sn-control-actions .sn-btn { padding: 8px 12px; font-size: 13px; } /* ── vocabulary cards ─────────────────────────────────────────────────── */ .sn-section-title { margin: 0; font-size: clamp(19px, 2.4vw, 24px); letter-spacing: -0.02em; } .sn-vocab { margin-top: 44px; } .sn-vocab .sn-section-title { margin-bottom: 16px; } .sn-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; } .sn-card { padding: 18px; border-radius: var(--sn-radius); border: 1px solid var(--sn-border); background: var(--sn-surface); transition: opacity 0.2s ease, border-color 0.2s ease, transform 0.16s ease; } .sn-card:hover { transform: translateY(-2px); border-color: var(--sn-border-strong); } .sn-card.is-off { opacity: 0.45; } .sn-card.is-off:hover { transform: none; } .sn-card-icon { font-size: 22px; line-height: 1; color: var(--sn-accent); } .sn-card h3 { margin: 10px 0 8px; font-size: 15px; } .sn-card p { margin: 0 0 8px; font-size: 13px; line-height: 1.6; color: var(--sn-muted); } /* Specificity, not !important, so the flash keyframes below can win. */ .sn-card p.sn-card-live { margin: 12px 0 8px; padding: 7px 10px; border-radius: 8px; background: var(--sn-surface-2); font-size: 12.5px; font-weight: 500; color: var(--sn-muted); font-variant-numeric: tabular-nums; } /* The highlight decays inside the animation rather than being cleared by a * timer, so a card cannot latch green: when the animation is off (reduced * motion) the pill simply never lights, which is the right answer there too. */ .sn-card p.sn-card-live.is-live { animation: sn-flash 0.9s ease-out; } @keyframes sn-flash { 0% { background: var(--sn-live); color: var(--sn-accent-ink); transform: scale(1.03); } 55% { background: var(--sn-live); color: var(--sn-accent-ink); transform: scale(1); } 100% { background: var(--sn-surface-2); color: var(--sn-muted); transform: scale(1); } } .sn-card p.sn-card-keys { margin: 0; font-size: 12px; } kbd { display: inline-block; min-width: 20px; padding: 2px 6px; border-radius: 5px; border: 1px solid var(--sn-border-strong); background: var(--sn-surface-2); font: inherit; font-size: 11px; text-align: center; } /* ── log ──────────────────────────────────────────────────────────────── */ .sn-log-section { margin-top: 44px; } .sn-log-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 14px; } .sn-log-count { font-size: 12.5px; color: var(--sn-muted); font-variant-numeric: tabular-nums; } .sn-log { list-style: none; margin: 0; padding: 0; border-radius: var(--sn-radius); border: 1px solid var(--sn-border); background: var(--sn-surface); max-height: 320px; overflow-y: auto; } .sn-log-empty { padding: 20px; font-size: 13px; line-height: 1.6; color: var(--sn-muted); } .sn-log-row { display: grid; grid-template-columns: 78px 110px minmax(0, 1fr) minmax(0, 1.2fr); gap: 12px; align-items: baseline; padding: 10px 16px; border-top: 1px solid var(--sn-border); font-size: 13px; animation: sn-row-in 0.24s ease-out; } .sn-log-row:first-child { border-top: 0; } .sn-log-time { color: var(--sn-muted); font-variant-numeric: tabular-nums; font-size: 12px; } .sn-log-gesture { font-weight: 600; } .sn-log-detail { color: var(--sn-accent); } .sn-log-evidence { color: var(--sn-muted); font-size: 12px; text-align: right; } @keyframes sn-row-in { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } } /* ── explainer ────────────────────────────────────────────────────────── */ .sn-explain { margin-top: 52px; } .sn-explain .sn-section-title { margin-bottom: 18px; } .sn-explain-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 22px 32px; } .sn-explain h3 { margin: 0 0 8px; font-size: 15px; } .sn-explain p { margin: 0; font-size: 13.5px; line-height: 1.7; color: var(--sn-muted); } /* /style.css carries no global link hover or focus rule, so prose links on this * page state their own. Every one of them is a real destination. */ .sn-page main p a, .sn-alert a { color: var(--sn-accent); text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--sn-accent) 40%, transparent); text-underline-offset: 2px; transition: color 0.16s ease, text-decoration-color 0.16s ease; } .sn-page main p a:hover, .sn-alert a:hover { text-decoration-color: currentcolor; } .sn-page main p a:active, .sn-alert a:active { color: color-mix(in srgb, var(--sn-accent) 75%, var(--text, #fafafa)); } .sn-page main p a:focus-visible, .sn-alert a:focus-visible { outline: 2px solid var(--sn-accent); outline-offset: 2px; border-radius: 3px; } /* ── responsive ───────────────────────────────────────────────────────── */ @media (max-width: 1040px) { .sn-console { grid-template-columns: minmax(0, 1fr); } .sn-stage { min-height: 320px; } } @media (max-width: 560px) { .sn-stage { aspect-ratio: 3 / 4; min-height: 300px; } .sn-hud { left: 10px; right: 10px; bottom: 10px; padding: 10px 12px; } .sn-log-row { grid-template-columns: 1fr; gap: 2px; } .sn-log-evidence { text-align: left; } .sn-hero-actions .sn-btn { flex: 1 1 auto; } } @media (prefers-reduced-motion: reduce) { .sn-hero-dot, .sn-spinner, .sn-card p.sn-card-live.is-live, .sn-log-row { animation: none; } .sn-card:hover { transform: none; } .sn-btn, .sn-card, .sn-hud, .sn-meter-fill, .sn-toggles label { transition: none; } }