:root {
  color-scheme: light;
  --navy: #10263d;
  --navy-soft: #24455f;
  --paper: #fffdf8;
  --ink: #17293a;
  --muted: #647487;
  --line: #d7dee3;
  --teal: #178d87;
  --teal-pale: #dff5ef;
  --coral: #ef6845;
  --gold: #f4c552;
  --danger: #b83e3e;
  --shadow: 0 28px 80px rgba(5, 19, 31, .32);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  padding: clamp(18px, 5vw, 56px) 18px;
  color: var(--ink);
  background:
    radial-gradient(circle at 14% 12%, rgba(118, 222, 207, .28), transparent 28rem),
    linear-gradient(145deg, #091b2e 0%, #123a51 56%, #238c86 120%);
  font: 16px/1.5 Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  overflow-x: hidden;
}

.ambient {
  position: fixed;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  filter: blur(4px);
  pointer-events: none;
  opacity: .16;
}

.ambient-one { top: -170px; right: -90px; background: var(--gold); }
.ambient-two { bottom: -220px; left: -120px; background: #60d5ce; }

.shell {
  position: relative;
  width: min(100%, 760px);
  margin: 0 auto;
}

.hero {
  display: flex;
  align-items: center;
  gap: 22px;
  margin: 0 4px 28px;
  color: white;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.35rem, 8vw, 4.2rem);
  line-height: .95;
  letter-spacing: -.055em;
}

.eyebrow, .step {
  margin: 0 0 5px;
  font-weight: 800;
  font-size: .76rem;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.eyebrow { color: #9fe3da; }
.tagline { max-width: 520px; margin: 11px 0 0; color: rgba(255, 255, 255, .76); }

.radio-mark {
  position: relative;
  width: 108px;
  height: 84px;
  flex: 0 0 auto;
  border: 2px solid rgba(255, 255, 255, .18);
  border-radius: 23px;
  background: rgba(5, 19, 31, .42);
  box-shadow: inset 0 -9px rgba(0, 0, 0, .15), 0 15px 35px rgba(0, 0, 0, .15);
}

.speaker {
  position: absolute;
  left: 14px;
  top: 20px;
  width: 43px;
  height: 43px;
  border: 4px solid var(--coral);
  border-radius: 50%;
  box-shadow: inset 0 0 0 7px rgba(239, 104, 69, .18);
}

.dial {
  position: absolute;
  right: 16px;
  top: 17px;
  width: 22px;
  height: 22px;
  border: 4px solid var(--gold);
  border-radius: 50%;
}

.wave {
  position: absolute;
  right: 17px;
  bottom: 16px;
  width: 24px;
  height: 4px;
  border-radius: 4px;
  background: #83d7ce;
}

.wave-two { bottom: 27px; width: 18px; }

.panel {
  margin-bottom: 18px;
  padding: clamp(22px, 5vw, 38px);
  border: 1px solid rgba(255, 255, 255, .65);
  border-radius: 26px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.panel-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.panel h2 { margin: 0; font-size: clamp(1.35rem, 4vw, 1.85rem); letter-spacing: -.03em; }
.step { color: var(--teal); }
.supporting { margin: 0 0 22px; color: var(--muted); }

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding: 7px 11px;
  border-radius: 999px;
  color: #6d4e14;
  background: #fff1c9;
  font-size: .78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.status-chip i { width: 8px; height: 8px; border-radius: 50%; background: #e4a628; }
.status-chip.connected { color: #126863; background: var(--teal-pale); }
.status-chip.connected i { background: #23a79e; box-shadow: 0 0 0 4px rgba(35, 167, 158, .14); }

.connect-grid {
  display: grid;
  grid-template-columns: minmax(180px, .85fr) 1.15fr;
  gap: 14px;
}

button, input, select { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: wait; opacity: .6; }

.primary-button, .secondary-button, .quiet-button, .icon-button {
  border: 0;
  border-radius: 14px;
  font-weight: 800;
}

.primary-button {
  min-height: 56px;
  padding: 15px 20px;
  color: white;
  background: linear-gradient(105deg, #e95e3b, #f1874d);
  box-shadow: 0 11px 26px rgba(233, 94, 59, .26);
}

.primary-button:active, .secondary-button:active { transform: translateY(1px); }
.bluetooth-icon { margin-right: 7px; font-size: 1.2rem; }

.device-box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 56px;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #f5f7f7;
}

.device-box span { color: var(--muted); font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }
.device-box strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.unlock-area {
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.permission-help {
  margin-top: 22px;
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: 13px;
  color: var(--muted);
  background: #f6f8f8;
}

.permission-help summary {
  color: var(--navy-soft);
  font-weight: 800;
  cursor: pointer;
}

.permission-help p { margin: 10px 0 0; font-size: .9rem; }

.debug-button {
  margin-top: 13px;
  padding: 9px 12px;
  border: 1px solid #b9c5cc;
  border-radius: 10px;
  color: var(--navy-soft);
  background: white;
  font-weight: 800;
}

.inline-form { display: grid; grid-template-columns: 1fr auto; gap: 10px; }
.secondary-button { padding: 0 22px; color: white; background: var(--navy-soft); }

label { display: block; margin: 18px 0 7px; font-weight: 800; }
label span { color: var(--muted); font-weight: 500; }

input, select {
  width: 100%;
  min-height: 52px;
  padding: 12px 14px;
  color: var(--ink);
  background: white;
  border: 1.5px solid #c9d2d9;
  border-radius: 13px;
  outline: none;
  transition: border .15s, box-shadow .15s;
}

input:focus, select:focus { border-color: var(--teal); box-shadow: 0 0 0 4px rgba(23, 141, 135, .13); }
small { display: block; margin-top: 7px; color: #718093; }

.status-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.status-grid article {
  min-width: 0;
  padding: 15px;
  border-radius: 15px;
  background: #f1f5f4;
}

.status-grid span { display: block; margin-bottom: 4px; color: var(--muted); font-size: .75rem; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; }
.status-grid strong { display: block; overflow: hidden; font-size: .95rem; text-overflow: ellipsis; white-space: nowrap; }

.icon-button { width: 43px; height: 43px; color: var(--navy); background: #edf2f2; font-size: 1.35rem; }
.quiet-button { padding: 9px 13px; color: var(--teal); background: var(--teal-pale); }
.save-button { width: 100%; margin-top: 26px; }

.advanced-launcher {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.advanced-launcher .supporting { margin: 8px 0 0; }
.advanced-button { min-height: 52px; padding: 0 20px; flex: 0 0 auto; }
.settings-form label:first-child { margin-top: 0; }

.button-row {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 11px;
  margin-top: 25px;
}

.button-row .primary-button { min-height: 50px; }

.danger-button {
  min-height: 48px;
  padding: 10px 14px;
  border: 1px solid #e5b3b3;
  border-radius: 13px;
  color: #9b3333;
  background: #fff1f1;
  font-weight: 800;
}

.super-divider {
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  text-align: center;
}

.super-settings { margin-top: 22px; }
.super-settings h3 { margin: 27px 0 8px; font-size: 1.05rem; }

.station-list { display: grid; gap: 14px; margin-top: 16px; }

.fixed-station-card {
  margin: 0;
  padding: 15px 16px 17px;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: linear-gradient(135deg, #f8fbfa, #f1f6f5);
}

.fixed-station-card.empty { border-style: dashed; background: #fafafa; }
.fixed-station-card legend { padding: 0 8px; color: var(--teal); font-size: .78rem; font-weight: 900; letter-spacing: .055em; text-transform: uppercase; }

.pin-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 12px;
}

.pin-strip span { padding: 5px 9px; border-radius: 999px; color: #34526a; background: #e5edef; font-size: .74rem; font-weight: 900; letter-spacing: .025em; }
.pin-strip span:first-child { color: #126e69; background: #dff2ef; }

.station-field-grid { display: grid; grid-template-columns: minmax(160px, .65fr) minmax(260px, 1.7fr); gap: 12px; }
.station-field-grid label { margin: 0 0 6px; font-size: .79rem; }
.station-field-grid input { min-height: 48px; }

.factory-zone {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 34px;
  padding: 17px;
  border: 1px solid #e8b5b5;
  border-radius: 15px;
  background: #fff6f6;
}

.factory-zone p { margin: 5px 0 0; color: #7d5151; font-size: .85rem; }
.factory-button { min-height: 48px; padding: 10px 15px; border: 0; border-radius: 13px; color: white; background: #a83535; font-weight: 900; flex: 0 0 auto; }

.notice {
  margin: 18px 0;
  padding: 14px 17px;
  border-left: 4px solid var(--teal);
  border-radius: 10px;
  color: #155f5b;
  background: #e3f5f2;
  box-shadow: 0 12px 35px rgba(5, 19, 31, .15);
}

.notice.warning { border-left-color: var(--gold); color: #604811; background: #fff4d4; }
.notice.error { border-left-color: var(--danger); color: #842d2d; background: #ffebeb; }
.notice.working { border-left-color: #4b79aa; color: #315c89; background: #e9f1f8; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 10px 7px;
  color: rgba(255, 255, 255, .65);
  font-size: .78rem;
}

[hidden] { display: none !important; }

@media (max-width: 610px) {
  .hero { align-items: flex-start; }
  .radio-mark { width: 82px; height: 68px; }
  .speaker { width: 34px; height: 34px; left: 11px; top: 18px; }
  .dial { right: 11px; top: 14px; }
  .wave { right: 11px; bottom: 11px; }
  .wave-two { bottom: 21px; }
  .connect-grid, .status-grid { grid-template-columns: 1fr; }
  .status-grid { gap: 8px; }
  footer { flex-direction: column; }
  .advanced-launcher { align-items: stretch; flex-direction: column; }
  .advanced-button { width: 100%; }
  .factory-zone { align-items: stretch; flex-direction: column; }
  .station-field-grid { grid-template-columns: 1fr; }
  .button-row { align-items: stretch; flex-direction: column-reverse; }
  .button-row button, .factory-zone button { width: 100%; }
}

@media (max-width: 430px) {
  .panel-heading { align-items: flex-start; flex-direction: column; }
  .status-chip { align-self: flex-start; }
  .inline-form { grid-template-columns: 1fr; }
  .secondary-button { min-height: 50px; }
}