/* soundsense.app: the app's own identity (lib/ui/soundsense_app.dart). */
@font-face { font-family: "Space Grotesk"; src: url("fonts/SpaceGrotesk.ttf") format("truetype"); font-weight: 300 700; font-display: swap; }
@font-face { font-family: "Plus Jakarta Sans"; src: url("fonts/PlusJakartaSans.ttf") format("truetype"); font-weight: 200 800; font-display: swap; }

:root {
  --bg: #f7f8f5; --surface: #ffffff; --fg: #17241e; --muted: #4c5c54; --rule: #dfe5df;
  --accent: #21664b; --on-accent: #ffffff; --accent-soft: #d9f5e4; --ink: #153d2d;
  --band: #153d2d; --band-fg: #e6efe9; --band-muted: #b6cbbf; --band-accent: #9dd8b7;
  --shadow: 0 30px 60px -28px rgba(21, 61, 45, .45), 0 12px 24px -16px rgba(21, 61, 45, .3);
  --max: 72rem; --gutter: clamp(16px, 4vw, 40px);
  --display: "Space Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101c17; --surface: #1b2b23; --fg: #e6efe9; --muted: #a7b8ae; --rule: #2b3d33;
    --accent: #9dd8b7; --on-accent: #103824; --accent-soft: #1f3a2c; --ink: #d9f5e4;
    --band: #1b2b23; --band-fg: #e6efe9; --band-muted: #a7b8ae; --band-accent: #9dd8b7;
    --shadow: 0 30px 60px -28px rgba(0, 0, 0, .7), 0 12px 24px -16px rgba(0, 0, 0, .5);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 80px; overflow-x: clip; }
body { margin: 0; background: var(--bg); color: var(--fg); overflow-x: clip;
       font: 1rem/1.6 "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3 { font-family: var(--display); letter-spacing: -0.015em; text-wrap: balance; }
.skip { position: absolute; left: -999px; top: 8px; }
.skip:focus { left: 8px; z-index: 10; background: var(--surface); padding: 8px 12px; }

/* Header */
.bar { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--bg) 88%, transparent);
       backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px);
       border-bottom: 1px solid transparent; }
.bar-in { display: flex; flex-wrap: wrap; gap: 8px 24px; align-items: center; justify-content: space-between;
          max-width: var(--max); margin: 0 auto; padding: 14px var(--gutter); }
.brand { display: inline-flex; gap: 10px; align-items: center; color: var(--fg); text-decoration: none;
         font: 600 1.15rem/1 var(--display); }
.brand img { border-radius: 8px; }
.bar nav { display: flex; gap: clamp(14px, 3vw, 28px); }
.bar nav a { color: var(--muted); text-decoration: none; font-weight: 600; font-size: .95rem; }
.bar nav a[aria-current="page"], .bar nav a:hover { color: var(--accent); }

/* Hero */
.hero { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 32px clamp(24px, 5vw, 72px);
        align-items: center; max-width: var(--max); margin: 0 auto; padding: clamp(24px, 5vw, 64px) var(--gutter) clamp(40px, 6vw, 88px); overflow-x: clip; }
.eyebrow, .step { margin: 0 0 14px; color: var(--accent); font: 600 .8rem/1.2 var(--display);
                  letter-spacing: .14em; text-transform: uppercase; }
.hero h1 { margin: 0 0 20px; font-size: clamp(2.6rem, 7vw, 5.2rem); line-height: .98; font-weight: 600; letter-spacing: -0.035em; }
.lead { margin: 0 0 28px; max-width: 34rem; color: var(--muted); font-size: clamp(1.05rem, 1.6vw, 1.2rem); }
.stores { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 28px; }
.store { display: inline-flex; gap: 10px; align-items: center; padding: 10px 17px 10px 13px; border-radius: 14px;
         border: 1.5px solid var(--rule); color: var(--muted); font: 600 1rem/1 var(--display); }
.store svg { width: 20px; height: 20px; fill: currentColor; }
.soon { padding: 7px 12px; border-radius: 999px; background: var(--accent-soft); color: var(--accent);
        font: 600 .8rem/1 var(--display); letter-spacing: .06em; text-transform: uppercase; }
.store-live { border-color: var(--accent); background: var(--accent); color: var(--on-accent); text-decoration: none; }
.store-live:hover { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.store .soon { margin-left: 2px; padding: 5px 9px; font-size: .72rem; }
.hero-facts { display: flex; flex-wrap: wrap; gap: 8px 22px; margin: 0; padding: 0; list-style: none; color: var(--muted); font-size: .92rem; }
.hero-facts li { display: inline-flex; gap: 8px; align-items: center; }
.hero-facts li::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }

/* The phone's right edge lines up with the header menu's right edge. */
.hero-art { position: relative; justify-self: end; padding: 12px 0; }
.ring { position: absolute; inset: 50% auto auto 50%; width: min(175%, 560px); aspect-ratio: 1; translate: -50% -50%;
        border-radius: 50%; pointer-events: none;
        background: repeating-radial-gradient(circle, transparent 0 34px, color-mix(in srgb, var(--accent) 22%, transparent) 34px 35px);
        mask: radial-gradient(circle, #000 30%, transparent 70%); -webkit-mask: radial-gradient(circle, #000 30%, transparent 70%); }
@media (prefers-reduced-motion: no-preference) {
  .ring { animation: pulse 4.8s ease-in-out infinite; }
  @keyframes pulse { 0%, 100% { scale: .94; opacity: .7; } 50% { scale: 1.04; opacity: 1; } }
}

/* Phones: real screens from the app's store screenshot test */
.phone { position: relative; margin: 0; width: min(100%, 300px); padding: 9px; border-radius: 46px;
         background: #0c1411; box-shadow: var(--shadow), inset 0 0 0 1.5px #2c3a33; }
.phone img { width: 100%; border-radius: 37px; }
.phone-hero { width: min(78vw, 320px); }

/* Loudness scale */
.scale { border-block: 1px solid var(--rule); background: var(--surface); }
.scale-in { max-width: var(--max); margin: 0 auto; padding: 32px var(--gutter) 36px; }
.scale-head { display: flex; flex-wrap: wrap; gap: 4px 24px; align-items: baseline; justify-content: space-between; margin-bottom: 22px; }
.scale-head h2 { margin: 0; font-size: 1.2rem; font-weight: 600; }
.scale-head p { margin: 0; color: var(--muted); font-size: .9rem; }
.scale-list { display: grid; grid-template-columns: repeat(9, 1fr); margin: 0; padding: 0; list-style: none; }
.scale-list li { position: relative; padding: 18px 6px 0 0; border-top: 6px solid
                 color-mix(in srgb, var(--accent) calc(18% + var(--at) * 10%), var(--accent-soft)); }
.scale-list li::before { content: ""; position: absolute; top: -12px; left: 0; width: 2px; height: 18px; background: var(--fg); opacity: .5; }
.scale-list b { display: block; font: 600 clamp(1.3rem, 2.4vw, 1.9rem)/1 var(--display); font-variant-numeric: tabular-nums; }
.scale-list span { display: block; margin-top: 6px; color: var(--muted); font-size: .85rem; line-height: 1.3; }

/* Features */
.section-title { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); font-size: clamp(2rem, 4.6vw, 3.4rem);
                 line-height: 1.02; font-weight: 600; letter-spacing: -0.03em; }
.features { padding: clamp(56px, 8vw, 112px) 0 clamp(24px, 4vw, 48px); }
.feature { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 32px clamp(32px, 8vw, 120px); align-items: center;
           max-width: 60rem; margin: clamp(40px, 6vw, 80px) auto 0; padding: 0 var(--gutter); }
.feature:nth-of-type(even) { grid-template-columns: auto minmax(0, 1fr); }
.feature:nth-of-type(even) .phone { order: -1; }
.feature .phone { width: min(70vw, 270px); }
.feature h3 { margin: 0 0 12px; font-size: clamp(1.6rem, 3vw, 2.2rem); line-height: 1.08; font-weight: 600; }
.feature-copy > p:not(.step) { margin: 0 0 18px; color: var(--muted); font-size: 1.05rem; max-width: 34rem; }
.ticks { margin: 0; padding: 0; list-style: none; }
.ticks li { position: relative; padding: 9px 0 9px 30px; border-top: 1px solid var(--rule); }
.ticks li::before { content: ""; position: absolute; left: 2px; top: 15px; width: 14px; height: 8px;
                    border: solid var(--accent); border-width: 0 0 2.5px 2.5px; rotate: -45deg; }

/* Privacy band */
.privacy { background: var(--band); color: var(--band-fg); margin-top: clamp(56px, 8vw, 104px); }
.privacy-in { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 32px clamp(32px, 6vw, 96px);
              max-width: var(--max); margin: 0 auto; padding: clamp(56px, 8vw, 104px) var(--gutter); }
.privacy-head h2 { margin: 0 0 16px; font-size: clamp(2rem, 4.6vw, 3.4rem); line-height: 1.02; font-weight: 600; letter-spacing: -0.03em; }
.privacy-head p { margin: 0 0 24px; color: var(--band-muted); font-size: 1.05rem; max-width: 30rem; }
.more { color: var(--band-accent); font-weight: 600; }
.privacy-list { display: grid; grid-template-columns: 1fr 1fr; gap: 28px 32px; margin: 0; padding: 0; list-style: none; }
.privacy-list li { padding-top: 16px; border-top: 2px solid var(--band-accent); }
.privacy-list h3 { margin: 0 0 6px; font-size: 1.2rem; font-weight: 600; }
.privacy-list p { margin: 0; color: var(--band-muted); }

/* Premium */
.premium { padding: clamp(56px, 8vw, 112px) 0 0; }
.plans { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 20px; max-width: var(--max);
         margin: 36px auto 0; padding: 0 var(--gutter); align-items: stretch; }
.plan { display: flex; flex-direction: column; padding: clamp(22px, 3vw, 34px); border-radius: 28px; background: var(--surface); border: 1px solid var(--rule); }
.plan h3 { margin: 0 0 6px; font-size: 1.5rem; font-weight: 600; }
.price { margin: 0 0 18px; }
.price b { font: 600 2.4rem/1 var(--display); }
.plan .ticks { margin-bottom: 20px; }
.note { margin: auto 0 0; padding: 14px 16px; border-radius: 16px; background: var(--accent-soft); font-size: .95rem; }
.plan-premium { background: var(--accent); color: var(--on-accent); border-color: transparent; }
.plan-premium h3 { margin-bottom: 18px; }
.plan-premium .ticks li { border-color: color-mix(in srgb, var(--on-accent) 22%, transparent); }
.plan-premium .ticks li::before { border-color: var(--on-accent); }
.prices { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: auto 0 0; }
.prices div { padding: 14px; border-radius: 18px; background: color-mix(in srgb, var(--on-accent) 12%, transparent); }
.prices .best { outline: 2px solid var(--on-accent); outline-offset: -2px; }
.prices dt { font: 600 .8rem/1.2 var(--display); letter-spacing: .1em; text-transform: uppercase; opacity: .85; }
.prices dd { margin: 6px 0 0; }
.prices dd b { font: 600 1.5rem/1 var(--display); }
.prices .sub { font-size: .82rem; line-height: 1.35; opacity: .9; }
.fine { max-width: var(--max); margin: 18px auto 0; padding: 0 var(--gutter); color: var(--muted); font-size: .88rem; }

/* FAQ */
.faq { padding: clamp(56px, 8vw, 112px) 0 clamp(56px, 8vw, 104px); }
.faq-list { max-width: var(--max); margin: 28px auto 0; padding: 0 var(--gutter); }
.faq details { border-top: 1px solid var(--rule); max-width: 50rem; }
.faq details:last-child { border-bottom: 1px solid var(--rule); }
.faq summary { display: flex; justify-content: space-between; gap: 16px; padding: 18px 0; cursor: pointer; list-style: none;
               font: 600 1.15rem/1.3 var(--display); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-size: 1.5rem; line-height: 1; transition: rotate .2s; }
.faq details[open] summary::after { rotate: 45deg; }
.faq details p { margin: 0 0 20px; max-width: 44rem; color: var(--muted); }

/* Contact */
.contact { border-top: 1px solid var(--rule); background: var(--surface); }
.contact-in { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 28px clamp(32px, 6vw, 96px);
              max-width: var(--max); margin: 0 auto; padding: clamp(56px, 8vw, 104px) var(--gutter); }
.contact-head h2 { margin: 0 0 14px; font-size: clamp(2rem, 4.6vw, 3.4rem); line-height: 1.02; font-weight: 600; letter-spacing: -0.03em; }
.contact-head p { margin: 0; color: var(--muted); font-size: 1.05rem; max-width: 26rem; }
.contact-form { display: grid; gap: 16px; min-width: 0; }
.contact-form .pair { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form label { display: grid; gap: 6px; font-weight: 600; font-size: .92rem; }
.contact-form label small { color: var(--muted); font-weight: 500; font-size: inherit; }
.contact-form input, .contact-form select, .contact-form textarea {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--rule); border-radius: 14px; background: var(--bg); color: var(--fg);
  font: 400 1rem/1.4 "Plus Jakarta Sans", system-ui, sans-serif; }
.contact-form textarea { resize: vertical; min-height: 140px; }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: none; border-color: var(--accent); }
.contact-form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.send { display: flex; flex-wrap: wrap; gap: 12px 18px; align-items: center; }
.send button { padding: 13px 24px; border: 0; border-radius: 999px; background: var(--accent); color: var(--on-accent);
               font: 600 1rem/1 var(--display); cursor: pointer; }
.send button:disabled { opacity: .6; cursor: wait; }
.status { margin: 0; color: var(--accent); font-weight: 600; }
.fine-form { margin: 0; color: var(--muted); font-size: .85rem; }

/* Footer */
.foot { border-top: 1px solid var(--rule); color: var(--muted); font-size: .9rem; }
.foot-in { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; max-width: var(--max);
           margin: 0 auto; padding: 24px var(--gutter) 36px; }
.foot p { margin: 0; }
.foot nav { display: flex; gap: 20px; }
.foot a { color: inherit; }

/* Legal pages */
.page-doc .bar-in, .page-doc .foot-in { max-width: 50rem; }
.doc { max-width: 50rem; margin: 0 auto; padding: 16px var(--gutter) 64px; }
.doc h1 { font-size: clamp(2.2rem, 6vw, 3.2rem); line-height: 1.05; margin: 1rem 0 .5rem; font-weight: 600; letter-spacing: -0.03em; }
.doc h1 + p { color: var(--muted); margin-top: 0; }
.doc h2 { font-size: 1.4rem; line-height: 1.2; margin: 2.5rem 0 .5rem; padding-top: 1.5rem; border-top: 1px solid var(--rule); font-weight: 600; }
.doc p, .doc li { max-width: 68ch; }
.doc ul { padding-left: 1.25rem; }
.doc li { margin: .35rem 0; }
.doc a { overflow-wrap: anywhere; }
.doc h3 { font-size: 1.1rem; margin: 1.75rem 0 .4rem; font-weight: 600; }
.doc table { width: 100%; border-collapse: collapse; margin: 1.25rem 0; font-size: .95rem; font-variant-numeric: tabular-nums; }
.doc th, .doc td { padding: 10px 12px 10px 0; border-bottom: 1px solid var(--rule); text-align: left; vertical-align: top; }
.doc th { font: 600 .8rem/1.2 var(--display); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.doc blockquote { margin: 1.25rem 0; padding: 14px 18px; border-radius: 16px; background: var(--accent-soft); }
.doc blockquote p { margin: 0; }

/* Guides */
.crumbs { display: flex; gap: 8px; margin-top: 8px; font-size: .88rem; }
.crumbs a { color: var(--muted); }
.crumbs a + a::before { content: "/"; margin-right: 8px; color: var(--rule); }
.updated { margin-top: 2.5rem; color: var(--muted); font-size: .9rem; }
.cta { margin: 2rem 0 0; padding: clamp(20px, 3vw, 30px); border-radius: 24px; background: var(--accent); color: var(--on-accent); }
.cta h2 { margin: 0 0 .5rem; padding: 0; border: 0; }
.cta p { margin: 0 0 18px; }
.cta .store-live { background: var(--on-accent); border-color: var(--on-accent); color: var(--accent); }
.cta .store-live:hover { background: var(--bg); border-color: var(--bg); color: var(--fg); }
.related ul { list-style: none; padding: 0; }
.related li { padding: 10px 0; border-bottom: 1px solid var(--rule); margin: 0; }
.scale-more { margin: 18px 0 0; font-size: .95rem; }
@media (max-width: 560px) {
  .doc table { font-size: .88rem; }
  .doc th, .doc td { padding-right: 8px; }
}

/* Narrow screens */
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; text-align: left; }
  .hero-art { order: 2; justify-self: center; }
  .feature, .feature:nth-of-type(even) { grid-template-columns: 1fr; justify-items: center; }
  .feature:nth-of-type(even) .phone { order: 0; }
  .feature-copy { width: 100%; }
  .privacy-in, .plans, .contact-in { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .scale-list { grid-template-columns: repeat(3, 1fr); row-gap: 22px; }
  .bar nav a[href="#faq"], .bar nav a[href="#features"] { display: none; }
}
@media (max-width: 560px) {
  .privacy-list, .contact-form .pair { grid-template-columns: 1fr; }
  .prices { grid-template-columns: 1fr; }
  .bar nav { gap: 14px; }
}
@media (max-width: 400px) {
  .bar nav a[href="#privacy"] { display: none; }
}