:root {
  color-scheme: dark;
  --ink: #eaf9f8;
  --muted: #8ea9ac;
  --night: #06141c;
  --panel: rgba(10, 37, 47, 0.82);
  --panel-strong: #0d303c;
  --line: rgba(151, 222, 218, 0.14);
  --aqua: #54e1d4;
  --blue: #4ba8ff;
  --green: #55e69a;
  --amber: #ffc85c;
  --danger: #ff6f70;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.32);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 76% 10%, rgba(38, 157, 166, 0.16), transparent 28rem),
    radial-gradient(circle at 10% 85%, rgba(40, 104, 166, 0.13), transparent 30rem),
    var(--night);
  overflow-x: hidden;
}

button, input { font: inherit; }
button { color: inherit; }

.ambient {
  position: fixed;
  width: 24rem;
  height: 24rem;
  border-radius: 50%;
  filter: blur(90px);
  opacity: .12;
  pointer-events: none;
}
.ambient-one { background: var(--aqua); right: -10rem; top: 20%; }
.ambient-two { background: var(--blue); left: -12rem; bottom: -4rem; }

.topbar {
  max-width: 1180px;
  margin: 0 auto;
  padding: 26px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}
.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(84, 225, 212, .36);
  border-radius: 14px;
  background: rgba(84, 225, 212, .09);
}
.brand svg { width: 27px; fill: none; stroke: var(--aqua); stroke-width: 2.3; stroke-linejoin: round; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 15px; letter-spacing: .02em; }
.brand small { margin-top: 1px; color: var(--muted); font-size: 11px; letter-spacing: .18em; text-transform: uppercase; }

.connection {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(7, 27, 36, .65);
  color: var(--muted);
  font-size: 13px;
}
.status-dot, .actual-state span, .suction-status span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #64777b;
  box-shadow: 0 0 0 4px rgba(100,119,123,.09);
}
.connection.online .status-dot, .actual-state.on span { background: var(--green); box-shadow: 0 0 0 4px rgba(85,230,154,.1), 0 0 14px rgba(85,230,154,.5); }
.connection.offline .status-dot { background: var(--danger); box-shadow: 0 0 0 4px rgba(255,111,112,.1); }

main { width: min(1124px, calc(100% - 40px)); margin: 28px auto 48px; }
.panel { border: 1px solid var(--line); background: var(--panel); box-shadow: var(--shadow); backdrop-filter: blur(18px); }

.hero-card {
  position: relative;
  min-height: 310px;
  padding: 46px 48px;
  border-radius: 30px;
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  overflow: hidden;
}
.hero-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 46%, rgba(84,225,212,.055));
  pointer-events: none;
}
.hero-copy, .temperature-orbit, .hero-meta { position: relative; z-index: 1; }
.eyebrow { margin: 0 0 8px; color: var(--aqua); font-size: 11px; font-weight: 750; letter-spacing: .18em; text-transform: uppercase; }
.temperature-row { display: flex; align-items: flex-start; line-height: .9; }
#temperature { font-size: clamp(72px, 11vw, 122px); font-weight: 680; letter-spacing: -.075em; }
.temperature-unit { margin: 10px 0 0 12px; color: var(--aqua); font-size: 24px; font-weight: 650; }
.temperature-note { margin: 18px 0 0; color: var(--muted); }
.temperature-note.good { color: var(--green); }
.temperature-note.warning { color: var(--amber); }
.temperature-note.danger { color: var(--danger); }

.temperature-orbit { display: grid; place-items: center; }
.orbit-ring {
  width: 152px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: 1px solid rgba(84,225,212,.2);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(84,225,212,.16), rgba(84,225,212,.025) 58%, transparent 60%);
  box-shadow: inset 0 0 40px rgba(84,225,212,.08), 0 0 60px rgba(84,225,212,.1);
}
.orbit-ring::before, .orbit-ring::after { content: ""; position: absolute; border: 1px solid rgba(84,225,212,.09); border-radius: 50%; }
.orbit-ring::before { width: 195px; height: 195px; }
.orbit-ring::after { width: 235px; height: 235px; }
.orbit-core { width: 74px; height: 74px; display: grid; place-items: center; border-radius: 50%; color: var(--aqua); background: #0d303b; font-size: 36px; }

.hero-meta {
  grid-column: 1 / -1;
  align-self: end;
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--line);
}
.hero-meta div { padding: 13px 17px; background: rgba(6, 26, 34, .84); }
.hero-meta span, .hero-meta strong { display: block; }
.hero-meta span { color: var(--muted); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
.hero-meta strong { margin-top: 4px; font-size: 13px; }

.section-heading { margin: 58px 4px 19px; display: flex; justify-content: space-between; align-items: end; gap: 30px; }
.section-heading h1 { margin: 0; font-size: clamp(26px, 4vw, 36px); letter-spacing: -.035em; }
.section-heading > p { max-width: 410px; margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }

.control-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.control-card { position: relative; padding: 27px; border-radius: 22px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 18px; }
.control-icon { width: 50px; height: 50px; display: grid; place-items: center; border-radius: 16px; color: var(--blue); background: rgba(75,168,255,.1); font-size: 30px; }
.bubbles { position: relative; }
.bubbles span { position: absolute; border: 2px solid var(--blue); border-radius: 50%; }
.bubbles span:nth-child(1) { width: 13px; height: 13px; left: 11px; bottom: 10px; }
.bubbles span:nth-child(2) { width: 9px; height: 9px; left: 26px; bottom: 23px; }
.bubbles span:nth-child(3) { width: 6px; height: 6px; left: 17px; top: 9px; }
.control-copy h2, .light-card h2, .suction-card h2 { margin: 0; font-size: 20px; letter-spacing: -.02em; }
.control-copy > p:last-child, .light-intro p:last-child, .suction-copy p:last-child { margin: 5px 0 0; color: var(--muted); font-size: 13px; line-height: 1.5; }

.toggle { width: 76px; padding: 5px 7px; display: flex; align-items: center; gap: 7px; border: 1px solid rgba(85,230,154,.22); border-radius: 999px; background: rgba(85,230,154,.1); cursor: pointer; }
.toggle span { width: 22px; height: 22px; border-radius: 50%; background: var(--green); box-shadow: 0 0 15px rgba(85,230,154,.25); transition: .2s ease; }
.toggle b { font-size: 11px; text-transform: uppercase; }
.toggle[aria-checked="false"] { flex-direction: row-reverse; border-color: var(--line); background: rgba(142,169,172,.06); }
.toggle[aria-checked="false"] span { background: #62777b; box-shadow: none; }
.actual-state { grid-column: 2 / -1; display: flex; align-items: center; gap: 8px; color: var(--muted); }
.actual-state em { font-size: 11px; font-style: normal; }

.light-card, .suction-card { margin-top: 18px; padding: 30px; border-radius: 24px; }
.light-intro { display: grid; grid-template-columns: auto 1fr auto; gap: 18px; align-items: center; }
.sun-icon, .shield-icon { width: 50px; height: 50px; display: grid; place-items: center; border-radius: 16px; color: var(--amber); background: rgba(255,200,92,.1); font-size: 25px; }
.light-actual { grid-column: auto; }
.mode-picker { margin-top: 28px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 5px; padding: 5px; border-radius: 13px; background: rgba(4, 20, 27, .65); }
.mode-picker button { padding: 11px; border: 0; border-radius: 9px; color: var(--muted); background: transparent; cursor: pointer; }
.mode-picker button.active { color: #062327; background: var(--aqua); font-weight: 750; }
.schedule { margin-top: 20px; display: flex; align-items: end; gap: 14px; }
.schedule label { flex: 0 1 180px; }
.schedule label span, .modal label span { display: block; margin-bottom: 7px; color: var(--muted); font-size: 11px; }
input { width: 100%; padding: 12px 13px; border: 1px solid var(--line); border-radius: 10px; outline: none; color: var(--ink); background: rgba(4,20,27,.7); }
input:focus { border-color: rgba(84,225,212,.55); box-shadow: 0 0 0 3px rgba(84,225,212,.08); }
.schedule-line { width: 28px; height: 1px; margin-bottom: 22px; background: var(--line); }
.secondary-button, .primary-button, .danger-button { padding: 12px 17px; border: 1px solid var(--line); border-radius: 10px; background: rgba(84,225,212,.07); cursor: pointer; }
.primary-button { border: 0; color: #05272b; background: var(--aqua); font-weight: 780; }
.danger-button { border: 0; color: #2d0809; background: var(--danger); font-weight: 780; }

.suction-card { display: grid; grid-template-columns: 1fr auto; gap: 24px; border-color: rgba(255,111,112,.2); }
.suction-copy { display: flex; gap: 18px; align-items: flex-start; }
.shield-icon { flex: 0 0 auto; color: var(--danger); background: rgba(255,111,112,.1); }
.danger-label { color: var(--danger); }
.suction-status { align-self: start; display: flex; align-items: center; gap: 9px; padding: 10px 13px; border-radius: 999px; background: rgba(85,230,154,.08); color: var(--green); font-size: 12px; }
.suction-status.running { color: var(--danger); background: rgba(255,111,112,.1); }
.suction-status.running span { background: var(--danger); animation: pulse 1.2s infinite; }
.timer-actions { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.timer-actions button { padding: 13px; border: 1px solid rgba(255,111,112,.18); border-radius: 11px; background: rgba(255,111,112,.055); cursor: pointer; }
.timer-actions button:hover { border-color: rgba(255,111,112,.5); }
.timer-actions .stop-button { background: rgba(255,111,112,.16); color: #ffb4b4; }

footer { margin-top: 24px; padding: 0 4px; display: flex; align-items: center; gap: 24px; color: var(--muted); font-size: 11px; }
footer b { color: var(--ink); font-weight: 600; }
footer button { margin-left: auto; border: 0; color: var(--muted); background: transparent; cursor: pointer; }

.modal { width: min(420px, calc(100% - 30px)); padding: 0; border: 1px solid var(--line); border-radius: 24px; color: var(--ink); background: #0a222c; box-shadow: var(--shadow); }
.modal::backdrop { background: rgba(1, 10, 14, .76); backdrop-filter: blur(7px); }
.modal form { padding: 32px; }
.modal h2 { margin: 0; font-size: 27px; }
.modal p:not(.eyebrow):not(.form-error) { color: var(--muted); line-height: 1.55; }
.modal label { display: block; margin: 24px 0 12px; }
.modal .primary-button { width: 100%; margin-top: 8px; }
.modal-icon { width: 48px; height: 48px; margin-bottom: 22px; display: grid; place-items: center; border-radius: 15px; color: var(--aqua); background: rgba(84,225,212,.1); font-size: 26px; }
.modal-icon.warning { color: var(--danger); background: rgba(255,111,112,.1); }
.modal-actions { margin-top: 24px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.form-error { min-height: 20px; margin: 6px 0 0; color: var(--danger); font-size: 12px; }
.toast { position: fixed; right: 24px; bottom: 24px; max-width: 340px; padding: 13px 17px; border: 1px solid var(--line); border-radius: 12px; color: var(--ink); background: #10313c; box-shadow: var(--shadow); opacity: 0; transform: translateY(12px); pointer-events: none; transition: .2s ease; }
.toast.visible { opacity: 1; transform: translateY(0); }
.toast.error { border-color: rgba(255,111,112,.4); }
button:disabled { opacity: .45; cursor: wait; }

@keyframes pulse { 50% { box-shadow: 0 0 0 7px rgba(255,111,112,0); } }

@media (max-width: 760px) {
  .topbar { padding: 20px; }
  main { width: min(100% - 24px, 620px); margin-top: 12px; }
  .hero-card { min-height: 0; padding: 30px 24px 24px; grid-template-columns: 1fr; }
  .temperature-orbit { position: absolute; right: 46px; top: 58px; transform: scale(.62); opacity: .6; }
  .hero-meta { grid-template-columns: 1fr; margin-top: 32px; }
  .section-heading { margin-top: 42px; display: block; }
  .section-heading > p { margin-top: 10px; }
  .control-grid { grid-template-columns: 1fr; }
  .control-card { padding: 23px 20px; grid-template-columns: auto 1fr auto; }
  .light-card, .suction-card { padding: 24px 20px; }
  .light-intro { grid-template-columns: auto 1fr; }
  .light-actual { grid-column: 2; }
  .schedule { align-items: stretch; flex-wrap: wrap; }
  .schedule label { flex: 1 1 130px; }
  .schedule-line { display: none; }
  .schedule .secondary-button { flex: 1 0 100%; }
  .suction-card { grid-template-columns: 1fr; }
  .suction-status { justify-self: start; }
  .timer-actions { grid-column: 1; grid-template-columns: 1fr 1fr; }
  footer { flex-wrap: wrap; gap: 10px 18px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}