/* ---------------------------------------------------------------------
   Tokens

   The app is a dark room at night by default — every connected lamp is
   a glowing orb whose colour reflects its own state. Light/dark/auto is
   controlled via [data-theme] on <html>, set by app.js; "auto" removes
   the attribute so prefers-color-scheme decides.
   --------------------------------------------------------------------- */

:root {
  --bg: #1a1620;
  --surface: #241f2c;
  --surface-2: #2e2836;
  --ink: #f3efea;
  --ink-dim: #a79fb0;
  --line: #3a3344;
  --accent: #8b7fd1;
  --accent-ink: #14121a;
  --status-on: #4cc38a;
  --status-off: #6b6478;
  --danger: #e0708a;

  --radius-md: 14px;
  --radius-lg: 22px;
  --font: ui-rounded, "SF Pro Rounded", "Segoe UI Variable Text", "Segoe UI",
    system-ui, -apple-system, sans-serif;

  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --bg: #f1eef2;
    --surface: #ffffff;
    --surface-2: #faf8fb;
    --ink: #221e2a;
    --ink-dim: #6b6478;
    --line: #e3deea;
    --accent: #6753c9;
    --accent-ink: #ffffff;
    color-scheme: light;
  }
}

:root[data-theme="light"] {
  --bg: #f1eef2;
  --surface: #ffffff;
  --surface-2: #faf8fb;
  --ink: #221e2a;
  --ink-dim: #6b6478;
  --line: #e3deea;
  --accent: #6753c9;
  --accent-ink: #ffffff;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #1a1620;
  --surface: #241f2c;
  --surface-2: #2e2836;
  --ink: #f3efea;
  --ink-dim: #a79fb0;
  --line: #3a3344;
  --accent: #8b7fd1;
  --accent-ink: #14121a;
  color-scheme: dark;
}

/* ---------------------------------------------------------------------
   Base
   --------------------------------------------------------------------- */

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  font-weight: 450;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  transition: background-color .3s ease, color .3s ease;
}

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 0.001ms !important; animation-duration: 0.001ms !important; }
}

h1, h2 { margin: 0; }

button {
  font-family: inherit;
  color: inherit;
}

[hidden] { display: none !important; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.view { min-height: 100vh; }

/* ---------------------------------------------------------------------
   Wordmark / shared text
   --------------------------------------------------------------------- */

.wordmark {
  font-size: 1.375rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.tagline {
  margin: 0.4rem 0 1.75rem;
  color: var(--ink-dim);
}

/* ---------------------------------------------------------------------
   Login
   --------------------------------------------------------------------- */

#login-view {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  overflow: hidden;
}

.ambient-glow {
  position: absolute;
  width: 46rem;
  height: 46rem;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -55%);
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 28%, transparent), transparent 65%);
  pointer-events: none;
}

.login-card {
  position: relative;
  width: 100%;
  max-width: 22rem;
  padding: 2.25rem 2rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.45);
}

.field {
  display: block;
  margin: 0 0 1rem;
  font-size: 0.875rem;
  color: var(--ink-dim);
}

.field span {
  display: block;
  margin-bottom: 0.4rem;
}

.field input,
.select {
  width: 100%;
  padding: 0.65rem 0.8rem;
  font: inherit;
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.field input:focus,
.select:focus {
  border-color: var(--accent);
}

.form-error {
  margin: 0.9rem 0 0;
  font-size: 0.875rem;
  color: var(--danger);
}

/* ---------------------------------------------------------------------
   Buttons
   --------------------------------------------------------------------- */

.btn {
  padding: 0.65rem 1.1rem;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
}

.btn-block { width: 100%; margin-top: 0.4rem; }

.btn-primary {
  color: var(--accent-ink);
  background: var(--accent);
}
.btn-primary:hover { filter: brightness(1.08); }
.btn-primary:active { filter: brightness(0.95); }

.btn-ghost {
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line);
}
.btn-ghost:hover { background: var(--surface-2); }

/* ---------------------------------------------------------------------
   Topbar
   --------------------------------------------------------------------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 1.75rem;
}

.theme-switch {
  display: inline-flex;
  padding: 0.25rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.theme-option {
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  background: transparent;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  color: var(--ink-dim);
}

.theme-option[aria-pressed="true"] {
  color: var(--accent-ink);
  background: var(--accent);
}

/* ---------------------------------------------------------------------
   Device grid
   --------------------------------------------------------------------- */

main {
  padding: 0 1.75rem 3rem;
}

.empty-state {
  color: var(--ink-dim);
  padding: 2rem 0;
}

.device-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(7.5rem, 1fr));
  gap: 1.5rem 1.25rem;
  max-width: 52rem;
}

.device-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
}

.device-orb {
  --orb-intensity: 0;
  width: 4.5rem;
  height: 4.5rem;
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 30%, rgba(255, 255, 255, 0.4), transparent 58%),
    radial-gradient(circle at 68% 78%, rgba(0, 0, 0, 0.22), transparent 55%),
    var(--orb-color, var(--line));
  box-shadow: 0 0 calc(22px * var(--orb-intensity)) calc(5px * var(--orb-intensity)) var(--orb-color, transparent);
  transition: background-color .4s ease, box-shadow .4s ease, transform .15s ease;
}

.device-tile:active .device-orb { transform: scale(0.94); }

.device-tile.offline .device-orb {
  box-shadow: none;
  filter: saturate(0.35);
  opacity: 0.55;
}

.device-tile-label {
  font-size: 0.85rem;
  font-weight: 600;
  text-align: center;
  max-width: 7rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.device-tile-status {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  color: var(--ink-dim);
}

.status-dot {
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--status-off);
}

.device-tile:not(.offline) .status-dot {
  background: var(--status-on);
}

/* ---------------------------------------------------------------------
   Modal
   --------------------------------------------------------------------- */

.modal {
  padding: 0;
  border: none;
  border-radius: var(--radius-lg);
  background: var(--surface);
  color: var(--ink);
  width: min(24rem, calc(100vw - 2rem));
}

.modal::backdrop {
  background: rgba(10, 8, 14, 0.55);
  backdrop-filter: blur(2px);
}

.modal-card {
  position: relative;
  padding: 2rem 1.75rem 1.75rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.modal-close {
  position: absolute;
  top: 0.9rem;
  right: 0.9rem;
  width: 1.75rem;
  height: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 50%;
  background: var(--surface-2);
  color: var(--ink-dim);
  cursor: pointer;
}

.modal-orb {
  --orb-intensity: 0;
  width: 5.5rem;
  height: 5.5rem;
  border-radius: 50%;
  margin-bottom: 1rem;
  background:
    radial-gradient(circle at 34% 30%, rgba(255, 255, 255, 0.4), transparent 58%),
    radial-gradient(circle at 68% 78%, rgba(0, 0, 0, 0.22), transparent 55%),
    var(--orb-color, var(--line));
  box-shadow: 0 0 calc(30px * var(--orb-intensity)) calc(8px * var(--orb-intensity)) var(--orb-color, transparent);
  transition: background-color .3s ease, box-shadow .3s ease;
}

.modal-name-input {
  width: 100%;
  padding: 0.15rem 0.4rem;
  font: inherit;
  font-size: 1.3rem;
  font-weight: 700;
  text-align: center;
  color: var(--ink);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
}

.modal-name-input:hover {
  background: var(--surface-2);
}

.modal-name-input:focus {
  background: var(--surface-2);
  border-color: var(--accent);
}

.modal-status {
  margin: 0.3rem 0 1.5rem;
  font-size: 0.85rem;
  color: var(--ink-dim);
}

.control-row {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
  border-top: 1px solid var(--line);
  text-align: left;
}

.control-row-stacked {
  flex-direction: column;
  align-items: stretch;
  gap: 0.5rem;
}

.control-label {
  font-size: 0.875rem;
  font-weight: 600;
}

.control-label-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.control-value {
  font-variant-numeric: tabular-nums;
  font-size: 0.875rem;
  color: var(--ink-dim);
}

/* ---------------------------------------------------------------------
   Power switch
   --------------------------------------------------------------------- */

.power-switch {
  --on: 0;
  position: relative;
  width: 3.1rem;
  height: 1.75rem;
  padding: 0.2rem;
  border: none;
  border-radius: 999px;
  background: var(--surface-2);
  cursor: pointer;
  transition: background-color .2s ease;
}

.power-switch[aria-checked="true"] {
  background: var(--status-on);
}

.power-knob {
  display: block;
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.35);
  transform: translateX(0);
  transition: transform .2s ease;
}

.power-switch[aria-checked="true"] .power-knob {
  transform: translateX(1.35rem);
}

/* ---------------------------------------------------------------------
   Slider
   --------------------------------------------------------------------- */

.slider {
  appearance: none;
  width: 100%;
  height: 0.4rem;
  border-radius: 999px;
  background: var(--surface-2);
  accent-color: var(--accent);
}

.slider::-webkit-slider-thumb {
  appearance: none;
  width: 1.1rem;
  height: 1.1rem;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}

.slider::-moz-range-thumb {
  width: 1.1rem;
  height: 1.1rem;
  border: none;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}

/* ---------------------------------------------------------------------
   Effect chips
   --------------------------------------------------------------------- */

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chip {
  padding: 0.4rem 0.85rem;
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--ink);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
}

.chip[aria-pressed="true"] {
  color: var(--accent-ink);
  background: var(--accent);
  border-color: var(--accent);
}

/* ---------------------------------------------------------------------
   Modal actions
   --------------------------------------------------------------------- */

.modal-actions {
  display: flex;
  gap: 0.75rem;
  width: 100%;
  margin-top: 1.5rem;
}

.modal-actions .btn { flex: 1; }

/* ---------------------------------------------------------------------
   Toast
   --------------------------------------------------------------------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  transform: translateX(-50%);
  padding: 0.7rem 1.1rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-ink);
  background: var(--accent);
  border-radius: 999px;
  box-shadow: 0 12px 30px -10px rgba(0, 0, 0, 0.4);
  z-index: 100;
}

.toast.toast-error {
  color: #fff;
  background: var(--danger);
}

/* ---------------------------------------------------------------------
   Small screens
   --------------------------------------------------------------------- */

@media (max-width: 420px) {
  .topbar { padding: 1.25rem; }
  main { padding: 0 1.25rem 2rem; }
  .device-grid { grid-template-columns: repeat(auto-fill, minmax(6rem, 1fr)); gap: 1.25rem 1rem; }
}