/* * BrainSync Binaural Beats Generator — app.css * * Dark meditative palette, mirrored from web/style.css and web/player/player.css. * Mobile-first, responsive. Standalone tool — no shared stylesheet dependency. */ /* ─── Design tokens ────────────────────────────────────────────────────────── */ :root { --bg: #070912; --bg2: #0d1124; --card: #121734; --line: #222a52; --text: #eef1ff; --muted: #a3acd6; --accent: #7c9cff; /* blue — delta/theta/alpha */ --accent2: #5ad1c5; /* teal — alpha/calm */ --focus: #c79bff; /* violet — beta/gamma */ /* current-band colour — overridden by JS via data-band attribute */ --band-color: var(--accent); } /* ─── Reset & base ──────────────────────────────────────────────────────────── */ *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; } html { scroll-behavior: smooth; } body { background: radial-gradient(1200px 800px at 50% -10%, #141a3a 0%, var(--bg) 55%) no-repeat, var(--bg); color: var(--text); font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; -webkit-font-smoothing: antialiased; min-height: 100dvh; display: flex; flex-direction: column; } a { color: inherit; text-decoration: none; } button { font-family: inherit; } /* ─── Band-colour theming (data-band on ) ─────────────────────────────── */ body[data-band="delta"], body[data-band="theta"], body[data-band="alpha"] { --band-color: var(--accent); } body[data-band="beta"] { --band-color: var(--accent2); } body[data-band="gamma"] { --band-color: var(--focus); } /* ─── Layout ─────────────────────────────────────────────────────────────────── */ .wrap { max-width: 720px; margin: 0 auto; padding: 0 20px; width: 100%; } /* ─── Nav ────────────────────────────────────────────────────────────────────── */ .tool-nav { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; border-bottom: 1px solid var(--line); } .back-link { display: flex; align-items: center; gap: 6px; font-size: 14px; color: var(--muted); transition: color .15s; } .back-link:hover { color: var(--text); } .back-link svg { width: 16px; height: 16px; } .logo { font-weight: 700; font-size: 18px; letter-spacing: .3px; display: flex; align-items: center; gap: 8px; } .logo .dot { width: 10px; height: 10px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent2)); box-shadow: 0 0 14px var(--accent); } .nav-cta { font-size: 13px; font-weight: 600; color: var(--muted); background: rgba(124,156,255,.08); border: 1px solid rgba(124,156,255,.2); border-radius: 9px; padding: 6px 12px; transition: background .15s, border-color .15s, color .15s; } .nav-cta:hover { background: rgba(124,156,255,.16); border-color: var(--accent); color: var(--text); } @media (max-width: 480px) { .nav-cta { display: none; } } /* ─── Main ───────────────────────────────────────────────────────────────────── */ main { flex: 1; padding: 28px 0 56px; } /* Page title */ .page-title { text-align: center; margin-bottom: 32px; } .page-title h1 { font-size: clamp(22px, 5vw, 36px); font-weight: 800; letter-spacing: -.4px; line-height: 1.1; } .page-title h1 .grad { background: linear-gradient(120deg, var(--accent), var(--accent2)); -webkit-background-clip: text; background-clip: text; color: transparent; } .page-title p { color: var(--muted); font-size: 15px; margin-top: 8px; max-width: 560px; margin-left: auto; margin-right: auto; } /* ─── Headphone notice ───────────────────────────────────────────────────────── */ .headphone-notice { display: flex; align-items: flex-start; gap: 12px; background: rgba(124,156,255,.07); border: 1px solid rgba(124,156,255,.22); border-radius: 13px; padding: 14px 16px; margin-bottom: 24px; font-size: 14px; color: var(--text); line-height: 1.5; } .headphone-notice svg { width: 22px; height: 22px; flex: none; color: var(--accent); margin-top: 1px; } .headphone-notice strong { color: var(--accent); } .headphone-notice .hn-sub { font-size: 12.5px; color: var(--muted); margin-top: 2px; display: block; } /* ─── Generator card ─────────────────────────────────────────────────────────── */ .gen-card { background: linear-gradient(180deg, var(--card), #0c1130); border: 1px solid var(--line); border-radius: 20px; padding: 26px 24px; margin-bottom: 24px; } /* ── Preset band row ── */ .preset-label { font-size: 12px; font-weight: 700; letter-spacing: .8px; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; } .preset-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 28px; } .preset-btn { display: flex; flex-direction: column; align-items: center; gap: 3px; flex: 1 1 0; min-width: 54px; padding: 10px 6px; border-radius: 12px; border: 1px solid var(--line); background: linear-gradient(180deg, var(--card), #0e1330); cursor: pointer; color: var(--text); transition: border-color .18s, background .18s, transform .12s; } .preset-btn:hover { transform: translateY(-1px); border-color: var(--band-color); } .preset-btn:focus-visible { outline: 2px solid var(--band-color); outline-offset: 2px; } .preset-btn .pb-name { font-size: 12px; font-weight: 700; } .preset-btn .pb-hz { font-size: 10.5px; color: var(--muted); } .preset-btn .pb-goal { font-size: 10px; color: var(--muted); margin-top: 1px; } .preset-btn.active { border-color: var(--band-color); background: linear-gradient(180deg, rgba(124,156,255,.10), #0e1330); box-shadow: 0 0 0 1px var(--band-color), inset 0 1px 0 rgba(255,255,255,.04); } /* Per-preset active colours */ .preset-btn[data-band="delta"].active, .preset-btn[data-band="theta"].active, .preset-btn[data-band="alpha"].active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), inset 0 1px 0 rgba(255,255,255,.04); } .preset-btn[data-band="beta"].active { border-color: var(--accent2); box-shadow: 0 0 0 1px var(--accent2), inset 0 1px 0 rgba(255,255,255,.04); } .preset-btn[data-band="gamma"].active { border-color: var(--focus); box-shadow: 0 0 0 1px var(--focus), inset 0 1px 0 rgba(255,255,255,.04); } /* ── Sliders section ── */ .sliders-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px 28px; margin-bottom: 22px; } @media (max-width: 520px) { .sliders-grid { grid-template-columns: 1fr; gap: 18px; } } .slider-group label { display: flex; justify-content: space-between; align-items: baseline; font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 8px; } .slider-group label .sl-val { font-variant-numeric: tabular-nums; color: var(--band-color); font-weight: 700; font-size: 14px; } /* Custom range input */ input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: 5px; border-radius: 4px; background: var(--line); outline: none; cursor: pointer; } input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 20px; height: 20px; border-radius: 50%; background: var(--band-color); border: 2px solid var(--bg); box-shadow: 0 0 8px var(--band-color); cursor: pointer; transition: box-shadow .15s; } input[type="range"]::-moz-range-thumb { width: 20px; height: 20px; border-radius: 50%; background: var(--band-color); border: 2px solid var(--bg); box-shadow: 0 0 8px var(--band-color); cursor: pointer; } input[type="range"]:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 3px rgba(124,156,255,.4); } .sl-hint { font-size: 11px; color: var(--muted); margin-top: 4px; } /* ── Frequency readout ── */ .freq-readout { display: flex; gap: 10px; align-items: center; justify-content: center; background: rgba(0,0,0,.3); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; margin-bottom: 22px; flex-wrap: wrap; gap: 8px 18px; text-align: center; } .freq-col { display: flex; flex-direction: column; align-items: center; gap: 2px; min-width: 80px; } .freq-col .fc-label { font-size: 10.5px; letter-spacing: .6px; text-transform: uppercase; color: var(--muted); font-weight: 600; } .freq-col .fc-val { font-size: 20px; font-weight: 800; font-variant-numeric: tabular-nums; letter-spacing: -.3px; } .fc-val.left-freq { color: var(--accent); } .fc-val.right-freq { color: var(--focus); } .fc-val.beat-freq { color: var(--band-color); } .freq-sep { color: var(--line); font-size: 20px; font-weight: 300; align-self: center; } /* ── Noise bed toggle ── */ .noise-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; background: rgba(124,156,255,.04); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; margin-bottom: 22px; flex-wrap: wrap; gap: 10px; } .noise-row .nr-left { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 180px; } .noise-label { font-size: 13.5px; font-weight: 600; } .noise-sub { font-size: 11.5px; color: var(--muted); } /* Toggle switch */ .toggle { position: relative; width: 44px; height: 24px; flex: none; } .toggle input { opacity: 0; width: 0; height: 0; } .toggle-track { position: absolute; inset: 0; border-radius: 24px; background: var(--line); cursor: pointer; transition: background .2s; } .toggle input:checked + .toggle-track { background: var(--band-color); } .toggle-track::after { content: ''; position: absolute; top: 3px; left: 3px; width: 18px; height: 18px; border-radius: 50%; background: #fff; transition: transform .2s; } .toggle input:checked + .toggle-track::after { transform: translateX(20px); } .toggle input:focus-visible + .toggle-track { box-shadow: 0 0 0 3px rgba(124,156,255,.4); } /* Noise volume slider (shown when noise is on) */ .noise-vol-wrap { display: none; align-items: center; gap: 10px; flex: 1; min-width: 120px; } .noise-vol-wrap.visible { display: flex; } .noise-vol-wrap span { font-size: 12px; color: var(--muted); white-space: nowrap; } .noise-vol-wrap input[type="range"] { flex: 1; } /* ── Waveform canvas ── */ .viz-wrap { position: relative; border-radius: 12px; overflow: hidden; background: #060810; border: 1px solid var(--line); margin-bottom: 22px; } #waveCanvas { display: block; width: 100%; height: 110px; } /* ── Play button ── */ .play-btn { display: flex; align-items: center; justify-content: center; gap: 10px; width: 100%; padding: 16px; border-radius: 14px; border: none; background: linear-gradient(120deg, var(--accent), var(--accent2)); color: #06122b; font-size: 17px; font-weight: 700; cursor: pointer; transition: opacity .15s, transform .12s, filter .15s; letter-spacing: .2px; margin-bottom: 14px; } .play-btn:hover { filter: brightness(1.08); transform: translateY(-1px); } .play-btn:active { transform: translateY(0); filter: brightness(.96); } .play-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; } .play-btn:disabled { opacity: .5; cursor: default; transform: none; } .play-btn svg { width: 20px; height: 20px; flex: none; } /* Band-specific play button gradients */ body[data-band="delta"] .play-btn, body[data-band="theta"] .play-btn, body[data-band="alpha"] .play-btn { background: linear-gradient(120deg, var(--accent), var(--accent2)); } body[data-band="beta"] .play-btn { background: linear-gradient(120deg, var(--accent2), var(--accent)); } body[data-band="gamma"] .play-btn { background: linear-gradient(120deg, var(--focus), var(--accent)); } /* Status row */ .status-row { display: flex; justify-content: space-between; align-items: center; gap: 10px; font-size: 12.5px; color: var(--muted); } .status-row .status-detail { flex: 1; line-height: 1.4; } .status-row .status-detail strong { color: var(--band-color); } /* ─── Unsupported banner ─────────────────────────────────────────────────────── */ .unsupported { display: none; text-align: center; padding: 48px 20px; color: var(--muted); } .unsupported h2 { color: var(--text); margin-bottom: 10px; font-size: 22px; } .unsupported p { font-size: 15px; max-width: 460px; margin: 0 auto; } .unsupported a { color: var(--accent); text-decoration: underline; } body.no-audio .unsupported { display: block; } body.no-audio .gen-card, body.no-audio .headphone-notice { display: none; } /* ─── App funnel banner ───────────────────────────────────────────────────────── */ .app-funnel { background: linear-gradient(135deg, #16204e, #101533); border: 1px solid var(--line); border-radius: 18px; padding: 28px 24px; text-align: center; margin-bottom: 32px; } .app-funnel h2 { font-size: 19px; font-weight: 800; margin-bottom: 8px; } .app-funnel p { color: var(--muted); font-size: 14px; max-width: 480px; margin: 0 auto 20px; } .funnel-badges { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; } .funnel-badge { display: flex; align-items: center; gap: 10px; background: #000; border: 1px solid #2a2f55; border-radius: 13px; padding: 10px 16px; min-width: 160px; transition: transform .15s, border-color .15s; } .funnel-badge:hover { transform: translateY(-2px); border-color: var(--accent); } .funnel-badge svg { width: 24px; height: 24px; flex: none; } .funnel-badge .b-sm { font-size: 10.5px; color: #c9cdf0; line-height: 1; } .funnel-badge .b-lg { font-size: 16px; font-weight: 600; line-height: 1.2; } .funnel-links { font-size: 13px; color: var(--muted); margin-top: 14px; } .funnel-links a { color: var(--accent); text-decoration: underline; } .funnel-links a:hover { color: var(--text); } /* ─── Explainer section ─────────────────────────────────────────────────────── */ .explainer { margin-bottom: 32px; } .explainer h2 { font-size: clamp(20px, 4vw, 26px); font-weight: 800; letter-spacing: -.2px; margin-bottom: 14px; } .explainer p { color: var(--muted); font-size: 14.5px; line-height: 1.7; margin-bottom: 12px; } .explainer p:last-child { margin-bottom: 0; } .explainer a { color: var(--accent); text-decoration: underline; } .explainer .band-table { width: 100%; border-collapse: collapse; font-size: 13.5px; margin: 16px 0; border-radius: 12px; overflow: hidden; } .explainer .band-table th, .explainer .band-table td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); } .explainer .band-table th { background: var(--card); color: var(--muted); font-weight: 600; font-size: 12px; letter-spacing: .5px; text-transform: uppercase; } .explainer .band-table td { color: var(--text); } .explainer .band-table tr:last-child td { border-bottom: none; } .explainer .band-table td:first-child { color: var(--accent); font-weight: 700; } .safety-note { display: flex; gap: 10px; align-items: flex-start; background: rgba(199,155,255,.06); border: 1px solid rgba(199,155,255,.18); border-radius: 12px; padding: 14px 16px; font-size: 13.5px; color: var(--muted); margin-top: 16px; line-height: 1.55; } .safety-note svg { width: 18px; height: 18px; flex: none; color: var(--focus); margin-top: 1px; } /* ─── FAQ ────────────────────────────────────────────────────────────────────── */ .faq-section h2 { font-size: clamp(20px, 4vw, 26px); font-weight: 800; letter-spacing: -.2px; margin-bottom: 16px; } .faq-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 32px; } .faq-item { background: linear-gradient(180deg, var(--card), #0e1330); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; } .faq-item summary { cursor: pointer; padding: 17px 20px; font-size: 15px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; align-items: center; color: var(--text); user-select: none; } .faq-item summary::-webkit-details-marker { display: none; } .faq-item summary::after { content: '+'; font-size: 20px; font-weight: 300; color: var(--accent); flex: none; margin-left: 12px; transition: transform .2s; line-height: 1; } .faq-item[open] summary::after { content: '−'; } .faq-item summary:hover { color: var(--accent); } .faq-item p, .faq-item div.faq-body { padding: 0 20px 17px; color: var(--muted); font-size: 14.5px; line-height: 1.65; } .faq-item a { color: var(--accent); text-decoration: underline; } /* ─── Footer ─────────────────────────────────────────────────────────────────── */ footer { border-top: 1px solid var(--line); padding: 28px 0; margin-top: auto; text-align: center; } .footer-badges { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 16px; } .footer-badge { display: flex; align-items: center; gap: 10px; background: #000; border: 1px solid #2a2f55; border-radius: 13px; padding: 10px 16px; min-width: 160px; transition: transform .15s, border-color .15s; } .footer-badge:hover { transform: translateY(-2px); border-color: var(--accent); } .footer-badge svg { width: 24px; height: 24px; flex: none; } .footer-badge .b-sm { font-size: 10.5px; color: #c9cdf0; line-height: 1; } .footer-badge .b-lg { font-size: 16px; font-weight: 600; line-height: 1.2; } .footer-fine { font-size: 12.5px; color: #6b73a0; line-height: 1.7; } .footer-fine a { color: var(--muted); text-decoration: underline; } /* ─── Sticky mobile CTA ──────────────────────────────────────────────────────── */ .sticky-cta { display: none; position: fixed; left: 0; right: 0; bottom: 0; background: rgba(8,10,22,.95); backdrop-filter: blur(12px); border-top: 1px solid var(--line); padding: 12px 16px; gap: 10px; z-index: 50; } .sticky-cta a { flex: 1; text-align: center; background: linear-gradient(120deg, var(--accent), var(--accent2)); color: #06122b; font-weight: 700; border-radius: 11px; padding: 12px; font-size: 14px; transition: filter .15s; } .sticky-cta a:hover { filter: brightness(1.08); } @media (max-width: 640px) { .sticky-cta { display: flex; } body { padding-bottom: 66px; } } /* ─── Responsive tweaks ──────────────────────────────────────────────────────── */ @media (max-width: 480px) { .gen-card { padding: 18px 14px; } .preset-row { gap: 6px; } .preset-btn { padding: 9px 4px; } .preset-btn .pb-name { font-size: 11px; } .freq-readout { gap: 6px 12px; } .freq-col .fc-val { font-size: 17px; } }