*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --bg: #0a0a0a;
  --black: #000000;
  --line: #1f1f1f;
  --line2: #2a2a2a;
  --text: #f2f2f2;
  --muted: #888888;
  --dim: #aaaaaa;
  --red: #d71921;
  --green: #22c55e;
  --green-text: #86efac;
  --font-ui: "Inter", system-ui, sans-serif;
  --font-dot: "DotGothic16", monospace;
  --app-w: 611px;
  --shot-w: 611px;
  --shot-h: 868px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-ui);
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}

a {
  color: var(--text);
}

.page-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(circle, #252525 0.65px, transparent 0.65px);
  background-size: 16px 16px;
  opacity: 0.35;
  z-index: -1;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.25rem;
  background: rgba(0, 0, 0, 0.82);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.topbar__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.topbar__nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.topbar__nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.92rem;
}

.topbar__nav a:hover {
  color: var(--text);
}

.topbar__cta {
  color: var(--text) !important;
  border: 1px solid var(--line2);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
}

main {
  width: min(980px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.intro {
  text-align: center;
  padding: 1rem 0 2rem;
}

.intro__tag {
  color: var(--red);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.intro h1 {
  margin: 0.6rem 0 1rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

.intro__lead {
  max-width: 520px;
  margin: 0 auto 1.25rem;
  color: var(--muted);
}

.intro__actions {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  padding: 0.7rem 1.25rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid transparent;
}

.btn--primary {
  background: var(--red);
  color: #fff;
}

.btn--ghost {
  border-color: var(--line2);
  color: var(--text);
}

/* ── EarA window (matches gui.py) ── */

.demo__frame {
  width: fit-content;
  max-width: 100%;
  margin: 0 auto;
  border: 1px solid #333;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.55);
}

.eara-window {
  width: var(--app-w);
  max-width: 100%;
  background-color: var(--black);
  background-image: radial-gradient(circle, #252525 0.65px, transparent 0.65px);
  background-size: 16px 16px;
  font-family: var(--font-ui);
  color: var(--text);
}

.eara-headerbar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--black);
  border-bottom: 1px solid var(--line);
  min-height: 46px;
}

.eara-headerbar__start {
  display: flex;
  gap: 8px;
  align-items: center;
}

.eara-headerbar__title {
  font-weight: 600;
  font-size: 14px;
  text-align: center;
}

.eara-headerbar__end {
  display: flex;
  gap: 6px;
  align-items: center;
  justify-content: flex-end;
}

.eara-header-btn {
  border-radius: 999px;
  min-height: 34px;
  padding: 0 18px;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  border: 1px solid #555;
  background: #222;
  color: #f0f0f0;
}

.eara-header-connect.eara-header-active {
  background: #fff;
  color: #000;
  border-color: #fff;
  font-weight: 700;
}

.eara-header-reset {
  background: #141414;
  color: #777;
  border-color: #333;
}

.eara-header-about {
  background: transparent;
  border: none;
  color: #ccc;
  font-size: 16px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
}

.wc {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  border: 1px solid #555;
  display: inline-block;
}

.eara-hero {
  background: var(--black);
  border-bottom: 1px solid #222;
  padding: 12px 18px 8px;
}

.eara-brand {
  font-family: var(--font-dot);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 6px;
  color: #fff;
  line-height: 1;
}

.eara-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--red);
  margin-top: 3px;
}

.eara-buttons {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  padding: 10px 16px;
  background: var(--black);
  border-bottom: 1px solid var(--line);
}

.eara-buttons-spacer {
  flex: 1;
  min-width: 8px;
}

.eara-tab {
  border-radius: 999px;
  min-height: 34px;
  padding: 0 16px;
  background: transparent;
  color: #ccc;
  border: 1px solid transparent;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.eara-tab:hover {
  color: #fff;
  background: #161616;
  border-color: var(--line2);
}

.eara-tab-active {
  background: #fff !important;
  color: #000 !important;
  border-color: #fff !important;
  font-weight: 700;
}

.eara-stack {
  min-height: 720px;
  max-height: min(868px, 75vh);
  overflow-y: auto;
}

.eara-panel-page {
  padding: 12px 20px 16px;
  display: none;
}

.eara-panel-page.is-active {
  display: block;
}

.eara-lang {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  margin-bottom: 12px;
}

.dim-label {
  color: var(--dim);
  font-size: 11px;
}

.dim-label--small {
  font-size: 13px;
  margin: 8px 0 0;
}

.dim-label--legal {
  text-align: center;
  margin-top: 12px;
  font-size: 11px;
}

.eara-status-card {
  background: linear-gradient(180deg, #171717 0%, #101010 100%);
  border: 1px solid #2c2c2c;
  border-radius: 18px;
  padding: 14px 16px 12px;
  margin-bottom: 14px;
}

.eara-focused .eara-status-card {
  border-color: #454545;
}

.eara-status-head {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-bottom: 4px;
}

.eara-status-dot {
  width: 11px;
  height: 11px;
  border-radius: 999px;
  margin-top: 7px;
  flex-shrink: 0;
  background: #666;
}

.eara-dot-ok {
  background: var(--green);
  box-shadow: 0 0 10px rgba(34, 197, 94, 0.55);
}

.eara-dot-off {
  background: var(--red);
  box-shadow: 0 0 10px rgba(215, 25, 33, 0.45);
}

.eara-status-name {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}

.eara-status-badges {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.eara-status-badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 4px 9px;
  border-radius: 999px;
  background: #222;
  color: #999;
  border: 1px solid #333;
}

.eara-status-badge-ok {
  background: #132818;
  color: var(--green-text);
  border-color: #1f4d31;
}

.eara-status-meta {
  color: #8f8f8f;
  font-size: 12px;
  margin: 2px 0 10px;
  line-height: 1.4;
}

.eara-batteries {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.eara-batt-cell {
  min-width: 0;
  background: #0d0d0d;
  border: 1px solid #262626;
  border-radius: 14px;
  padding: 10px 10px 8px;
}

.eara-batt-cell.eara-batt-off {
  opacity: 0.72;
}

.eara-batt-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 5px;
}

.eara-batt-side {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  color: #9a9a9a;
}

.eara-batt-pct {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}

.eara-batt-bar {
  height: 5px;
  border-radius: 999px;
  background: #252525;
  overflow: hidden;
}

.eara-batt-bar span {
  display: block;
  height: 100%;
  background: #f2f2f2;
  border-radius: 999px;
}

.eara-batt-sub {
  min-height: 14px;
  font-size: 10px;
  font-weight: 600;
  margin-top: 4px;
}

.eara-batt-sub-muted {
  color: #888;
  font-size: 10px;
  line-height: 1.2;
}

.eara-status-modes {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.eara-mode-chip {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 5px 10px;
  border-radius: 999px;
  background: #121212;
  color: #bdbdbd;
  border: 1px solid #2f2f2f;
}

.eara-field {
  margin-bottom: 12px;
}

.eara-field label {
  display: block;
  margin-bottom: 4px;
}

.eara-dropdown {
  background: #141414;
  border: 1px solid var(--line2);
  border-radius: 999px;
  padding: 10px 14px;
  font-size: 13px;
  color: #ececec;
}

.eara-dropdown--sm {
  display: inline-block;
  min-width: 80px;
  padding: 8px 12px;
}

.eara-button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin: 14px 0;
}

.eara-chip {
  border-radius: 999px;
  background: #141414;
  color: #fff;
  border: 1px solid #444;
  min-height: 36px;
  padding: 0 14px;
  font-family: var(--font-ui);
  font-weight: 500;
  font-size: 13px;
  cursor: pointer;
}

.eara-chip-active {
  background: #fff;
  color: #000;
  border-color: #fff;
  font-weight: 700;
}

.eara-chip-disconnect {
  background: #301010;
  color: #fecaca;
  border-color: var(--red);
}

.eara-card {
  background: #141414;
  border: 1px solid var(--line2);
  border-radius: 20px;
  padding: 16px;
  margin-bottom: 14px;
}

.eara-card-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: #999;
  margin-bottom: 10px;
  text-transform: uppercase;
}
.eara-header-title {
  font-weight: 600;
  font-size: 14px;
}

.eara-card-title--center {
  text-align: center;
}

.eara-codec-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.eara-sound-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.eara-window .eara-sound-cards {
  grid-template-columns: 1fr;
}

.eara-sound-card {
  min-width: 0;
}

.eara-toggles {
  border-top: 1px solid #222;
}

.eara-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid #222;
}

.eara-toggle-row:last-child {
  border-bottom: none;
}

.eara-toggle-label {
  font-size: 13px;
  font-weight: 500;
  color: #ddd;
}

.eara-switch {
  width: 44px;
  height: 24px;
  border-radius: 999px;
  border: 1px solid #333;
  background: #1a1a1a;
  padding: 2px;
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
}

.eara-switch span {
  display: block;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #666;
  transition: transform 0.2s ease, background 0.2s ease;
}

.eara-switch.is-on {
  background: rgba(215, 25, 33, 0.35);
  border-color: var(--red);
}

.eara-switch.is-on span {
  transform: translateX(20px);
  background: var(--red);
}

.eara-noise-label {
  font-size: 13px;
  color: #ddd;
  margin: 12px 0 8px;
}

.eara-anc-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.eara-anc-list .eara-chip {
  width: 100%;
  text-align: center;
}

.eara-eq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 10px 0;
}

.eara-eq-panel {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 4px;
  background: #111;
  border: 1px solid #262626;
  border-radius: 16px;
  padding: 10px 8px;
  min-height: 120px;
}

.eara-eq-band {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.eara-eq-band input {
  writing-mode: vertical-lr;
  direction: rtl;
  width: 22px;
  height: 80px;
  accent-color: var(--red);
}

.eara-eq-band label {
  font-size: 9px;
  color: var(--muted);
}

.eara-gesture-side {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--red);
  margin: 12px 0 6px;
}

.eara-gesture-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  flex-wrap: wrap;
}

.eara-gesture-type {
  font-size: 13px;
  color: #ddd;
}

.eara-tools-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.demo__hint {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 1rem;
}

/* ── Screenshots 1:1 ── */

.shots {
  margin-top: 3.5rem;
  text-align: center;
}

.shots h2 {
  margin-bottom: 0.35rem;
}

.shots__note {
  color: var(--muted);
  font-size: 0.88rem;
  margin-bottom: 1.5rem;
}

.shots__grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
}

.shots__figure {
  margin: 0;
  width: var(--shot-w);
  max-width: 100%;
}

.shots__figure img {
  display: block;
  width: var(--shot-w);
  height: var(--shot-h);
  max-width: 100%;
  height: auto;
  aspect-ratio: 611 / 868;
  object-fit: contain;
  image-rendering: auto;
  border: 1px solid var(--line2);
  border-radius: 12px;
  background: var(--black);
}

.shots__figure figcaption {
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.install-cta {
  margin-top: 3rem;
  text-align: center;
  border: 1px solid var(--line2);
  border-radius: 16px;
  padding: 2rem 1.25rem;
}

.install-cta pre {
  text-align: left;
  display: inline-block;
  max-width: 100%;
  overflow-x: auto;
  background: #000;
  border: 1px solid var(--line2);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  transform: translateX(-50%);
  background: #111;
  border: 1px solid var(--line2);
  padding: 0.75rem 1rem;
  border-radius: 999px;
  font-size: 0.88rem;
  z-index: 50;
  max-width: calc(100% - 2rem);
}

.toast[hidden] {
  display: none;
}

@media (max-width: 640px) {
  .topbar__nav a:not(.topbar__cta) {
    display: none;
  }

  .eara-sound-cards {
    grid-template-columns: 1fr;
  }

  .eara-batteries {
    grid-template-columns: 1fr;
  }
}