/* ===========================================
   Pool Control — Aquatic Night Theme
   Dark immersive UI with glowing water accents
   =========================================== */

:root {
  /* Deep ocean palette */
  --bg-deep: #060d16;
  --bg-card: #0c1a2a;
  --bg-card-hover: #112238;
  --bg-surface: #0a1525;
  --bg-modal: #0e1e32;

  /* Water accent spectrum */
  --cyan: #00e5ff;
  --cyan-dim: #00a0b4;
  --cyan-glow: rgba(0, 229, 255, 0.15);
  --cyan-glow-strong: rgba(0, 229, 255, 0.3);
  --teal: #00bfa5;
  --blue: #2979ff;
  --warm: #ff9100;
  --warm-dim: #b36600;
  --red: #ff5252;
  --green: #69f0ae;
  --purple: #b388ff;

  /* Text */
  --text: #e0eaf5;
  --text-dim: #7a96b8;
  --text-muted: #4a6580;

  /* Borders */
  --border: rgba(0, 229, 255, 0.08);
  --border-active: rgba(0, 229, 255, 0.25);

  /* Sizing */
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --header-h: 60px;
  --nav-h: 64px;

  /* Fonts */
  --font: 'Outfit', -apple-system, sans-serif;
  --mono: 'JetBrains Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

html {
  font-size: 16px;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font);
  background: var(--bg-deep);
  color: var(--text);
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

#app {
  position: relative;
  max-width: 480px;
  margin: 0 auto;
  min-height: 100dvh;
}

/* === Ambient Background === */
.ambient-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.ripple {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, var(--cyan-glow) 0%, transparent 70%);
  animation: ripple-drift 20s ease-in-out infinite;
}

.r1 { width: 600px; height: 600px; top: -200px; left: -100px; animation-delay: 0s; }
.r2 { width: 500px; height: 500px; bottom: -150px; right: -100px; animation-delay: -7s; opacity: 0.6; }
.r3 { width: 400px; height: 400px; top: 40%; left: 50%; animation-delay: -13s; opacity: 0.4; }

@keyframes ripple-drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.1); }
  66% { transform: translate(-20px, 15px) scale(0.95); }
}

/* === Connection Overlay === */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-deep);
  transition: opacity 0.4s ease;
}

.overlay[hidden] {
  display: none;
}

.dashboard[hidden] {
  display: none;
}

.overlay-content {
  text-align: center;
  padding: 2rem;
  animation: fadeIn 0.6s ease;
}

.pool-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  color: var(--cyan);
  animation: float 3s ease-in-out infinite;
}

.pool-icon svg { width: 100%; height: 100%; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.overlay h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--cyan), var(--teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: var(--text-dim);
  margin-top: 0.5rem;
  font-weight: 300;
}

.loader {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 2rem;
}

.loader div {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cyan);
  animation: loader-bounce 1.4s ease-in-out infinite;
}

.loader div:nth-child(2) { animation-delay: 0.16s; }
.loader div:nth-child(3) { animation-delay: 0.32s; }

@keyframes loader-bounce {
  0%, 80%, 100% { transform: scale(0.4); opacity: 0.3; }
  40% { transform: scale(1); opacity: 1; }
}

.error-text {
  color: var(--red);
  margin-top: 1rem;
  font-size: 0.875rem;
}

/* === Header === */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  height: var(--header-h);
  position: sticky;
  top: 0;
  z-index: 20;
  background: linear-gradient(180deg, var(--bg-deep) 60%, transparent);
  backdrop-filter: blur(12px);
}

.header-left { display: flex; align-items: center; gap: 0.75rem; }
.header-right { display: flex; align-items: center; gap: 0.75rem; }

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--cyan), var(--teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.system-badge {
  font-size: 0.7rem;
  font-family: var(--mono);
  color: var(--text-muted);
  background: var(--bg-card);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
}
.status-dot.online {
  background: var(--green);
  box-shadow: 0 0 8px rgba(105, 240, 174, 0.5);
}

/* === Tab Navigation === */
.tab-nav {
  display: flex;
  gap: 2px;
  padding: 0 1rem;
  position: sticky;
  top: var(--header-h);
  z-index: 19;
  background: var(--bg-deep);
  border-bottom: 1px solid var(--border);
}

.tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 0.6rem 0;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all 0.25s ease;
  font-family: var(--font);
}

.tab svg { width: 20px; height: 20px; }
.tab:hover { color: var(--text-dim); }
.tab.active {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* === Panels === */
.panels {
  padding: 1.25rem;
  padding-bottom: 3rem;
  position: relative;
  z-index: 1;
}

.panel { display: none; animation: fadeIn 0.3s ease; }
.panel.active { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === Temperature Cards === */
.temp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.temp-grid > :first-child:nth-last-child(2) {
  grid-column: 1 / -1;
}

.temp-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
  overflow: hidden;
  transition: border-color 0.3s;
}

.temp-card:hover { border-color: var(--border-active); }

.temp-card.air-temp {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
}

.temp-label {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 0.25rem;
}

.temp-value {
  font-size: 2.5rem;
  font-weight: 700;
  font-family: var(--mono);
  line-height: 1;
  position: relative;
  z-index: 1;
}

.air-temp .temp-value { font-size: 1.75rem; }
.air-temp .temp-label { margin-bottom: 0; }

.temp-unit {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-dim);
  vertical-align: super;
}

.pool-temp .temp-value { color: var(--cyan); }
.spa-temp .temp-value { color: var(--warm); }
.air-temp .temp-value { color: var(--text-dim); }

.temp-ring {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.15;
}

.temp-ring svg { width: 100%; height: 100%; }

.ring-bg {
  fill: none;
  stroke: var(--text-muted);
  stroke-width: 4;
  opacity: 0.2;
}

.ring-fill {
  fill: none;
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 327;
  stroke-dashoffset: 327;
  transition: stroke-dashoffset 1.5s ease;
}

.pool-temp .ring-fill { stroke: var(--cyan); }
.spa-temp .ring-fill { stroke: var(--warm); }

.temp-icon {
  width: 28px;
  height: 28px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.temp-icon svg { width: 100%; height: 100%; }

/* === Section Headers === */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.section-header h2 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.section-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: -0.25rem;
  margin-bottom: 1rem;
}

/* === Equipment Grid === */
.equip-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.equip-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.equip-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--cyan-glow) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
}

.equip-btn:hover { border-color: var(--border-active); }

.equip-btn.on {
  border-color: var(--cyan-dim);
  color: var(--text);
}

.equip-btn.on::before { opacity: 1; }

.equip-btn.on .equip-dot {
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan-glow-strong);
}

.equip-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-muted);
  flex-shrink: 0;
  transition: all 0.3s;
}

.equip-label {
  position: relative;
  z-index: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.equip-btn.sending {
  pointer-events: none;
  opacity: 0.7;
}

/* === Setpoints === */
.setpoint-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.setpoint {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  text-align: center;
}

.setpoint label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
}

.setpoint-control {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.setpoint-value {
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 600;
  min-width: 3ch;
  color: var(--text);
}

.btn-round {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-active);
  background: var(--bg-card);
  color: var(--cyan);
  font-size: 1.25rem;
  font-family: var(--font);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.btn-round:hover {
  background: var(--cyan-glow);
  border-color: var(--cyan-dim);
}

.btn-round:active { transform: scale(0.9); }

/* === Lights Panel === */
.lights-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.light-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.3s;
}

.light-card:hover { border-color: var(--border-active); }

.light-card.on {
  border-color: var(--cyan-dim);
}

.light-preview {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 2px solid var(--text-muted);
  flex-shrink: 0;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.light-card.on .light-preview {
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 20px var(--cyan-glow-strong);
}

.light-info { flex: 1; min-width: 0; }

.light-name {
  font-weight: 500;
  font-size: 0.9rem;
}

.light-type {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.light-actions { display: flex; gap: 0.5rem; }

.btn-sm-light {
  padding: 0.35rem 0.65rem;
  font-size: 0.7rem;
  font-family: var(--font);
  font-weight: 500;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-sm-light:hover {
  border-color: var(--cyan-dim);
  color: var(--cyan);
}

/* === Color Panel === */
.color-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-active);
  border-radius: var(--radius);
  padding: 1.25rem;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.slider-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
  margin-top: 1rem;
}

.brightness-slider { padding: 0 0.25rem; }

.brightness-slider input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 8px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--bg-surface), var(--cyan));
  outline: none;
}

.brightness-slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--cyan);
  border: 3px solid var(--bg-deep);
  box-shadow: 0 0 10px var(--cyan-glow-strong);
  cursor: pointer;
}

.brightness-marks {
  display: flex;
  justify-content: space-between;
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
}

.effects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.effect-btn {
  padding: 0.6rem 0.4rem;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--text-dim);
  font-family: var(--font);
  font-size: 0.7rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.effect-btn:hover {
  border-color: var(--cyan-dim);
  color: var(--text);
}

.effect-btn.active {
  border-color: var(--cyan);
  background: var(--cyan-glow);
  color: var(--cyan);
}

/* === OneTouch Grid === */
.onetouch-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.onetouch-btn {
  position: relative;
  padding: 1.25rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
  text-align: center;
  overflow: hidden;
}

.onetouch-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--cyan-glow) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
}

.onetouch-btn:hover { border-color: var(--border-active); }

.onetouch-btn.on {
  border-color: var(--cyan-dim);
  color: var(--text);
}

.onetouch-btn.on::before { opacity: 1; }

.onetouch-btn.alloff {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, rgba(255, 82, 82, 0.05), transparent);
  border-color: rgba(255, 82, 82, 0.15);
  color: var(--red);
}

.onetouch-btn.alloff:hover { border-color: rgba(255, 82, 82, 0.4); }

.onetouch-label {
  position: relative;
  z-index: 1;
}

.onetouch-number {
  display: block;
  font-size: 0.65rem;
  font-family: var(--mono);
  color: var(--text-muted);
  margin-top: 0.25rem;
  position: relative;
  z-index: 1;
}

/* === Aux Grid === */
.aux-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

/* Reuse equip-btn styles for aux */

/* === Schedules === */
.schedules-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

.empty-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 1rem;
  opacity: 0.4;
}

.empty-state .small { font-size: 0.8rem; margin-top: 0.5rem; }

.schedule-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all 0.3s;
}

.schedule-card.disabled { opacity: 0.5; }

.schedule-time {
  font-family: var(--mono);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--cyan);
  min-width: 4.5rem;
}

.schedule-info {
  flex: 1;
  min-width: 0;
}

.schedule-label-text {
  font-weight: 500;
  font-size: 0.85rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.schedule-days {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
  font-family: var(--mono);
}

.schedule-actions {
  display: flex;
  gap: 0.25rem;
}

.schedule-toggle {
  width: 40px;
  height: 22px;
  border-radius: 11px;
  border: none;
  background: var(--text-muted);
  cursor: pointer;
  position: relative;
  transition: background 0.3s;
}

.schedule-toggle.on { background: var(--cyan); }

.schedule-toggle::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: white;
  top: 2px;
  left: 2px;
  transition: transform 0.3s;
}

.schedule-toggle.on::after { transform: translateX(18px); }

.btn-delete {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-xs);
  border: 1px solid transparent;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.btn-delete:hover {
  color: var(--red);
  border-color: rgba(255, 82, 82, 0.3);
  background: rgba(255, 82, 82, 0.08);
}

.btn-delete svg, .btn-edit svg { width: 16px; height: 16px; }

.btn-edit {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-xs);
  border: 1px solid transparent;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.btn-edit:hover {
  color: var(--cyan);
  border-color: var(--border-active);
  background: var(--cyan-glow);
}

/* === Modal === */
.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: var(--bg-modal);
  border: 1px solid var(--border-active);
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 1.5rem;
  width: 100%;
  max-width: 480px;
  max-height: 85dvh;
  overflow-y: auto;
  animation: slideUp 0.3s ease;
}

.modal-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 0.4rem;
}

.input {
  width: 100%;
  padding: 0.65rem 0.875rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}

.input:focus { border-color: var(--cyan-dim); }
.input::placeholder { color: var(--text-muted); }

select.input {
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237a96b8' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.875rem center;
  padding-right: 2rem;
}

select.input option { background: var(--bg-modal); }
select.input optgroup { color: var(--text-dim); }

.day-picker {
  display: flex;
  gap: 0.35rem;
}

.day-btn {
  flex: 1;
  padding: 0.5rem 0;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.day-btn.active {
  background: var(--cyan-glow);
  border-color: var(--cyan-dim);
  color: var(--cyan);
}

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

/* === Buttons === */
.btn {
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-xs);
  border: none;
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan-dim), var(--teal));
  color: var(--bg-deep);
}

.btn-primary:hover {
  filter: brightness(1.15);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
}

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

.btn-sm {
  padding: 0.4rem 0.75rem;
  font-size: 0.75rem;
}

.btn-off {
  background: rgba(255, 82, 82, 0.12);
  border: 1px solid rgba(255, 82, 82, 0.3);
  color: var(--red);
}

.btn-off:hover {
  background: rgba(255, 82, 82, 0.2);
  border-color: var(--red);
  filter: none;
  transform: none;
}

.light-status {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
}

.light-status .on-label {
  color: var(--green);
  font-weight: 500;
}

.light-status .off-label {
  color: var(--text-muted);
}

.btn-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-dim);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.btn-icon svg { width: 18px; height: 18px; }
.btn-icon:hover { border-color: var(--cyan-dim); color: var(--cyan); }
.btn-icon.small { width: 28px; height: 28px; }
.btn-icon.small svg { width: 14px; height: 14px; }

.btn-icon.spinning svg {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* === Toast === */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: 90%;
  max-width: 400px;
}

.toast {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-xs);
  font-size: 0.85rem;
  font-weight: 500;
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
  backdrop-filter: blur(12px);
}

.toast.success {
  background: rgba(105, 240, 174, 0.15);
  border: 1px solid rgba(105, 240, 174, 0.3);
  color: var(--green);
}

.toast.error {
  background: rgba(255, 82, 82, 0.15);
  border: 1px solid rgba(255, 82, 82, 0.3);
  color: var(--red);
}

.toast.info {
  background: rgba(0, 229, 255, 0.12);
  border: 1px solid rgba(0, 229, 255, 0.25);
  color: var(--cyan);
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes toastOut {
  from { opacity: 1; }
  to { opacity: 0; transform: translateY(-10px); }
}

/* === WebTouch Panel === */
.panel-display {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.panel-screen {
  background: #0a0e14;
  border-bottom: 1px solid var(--border);
  padding: 1.25rem;
  font-family: var(--mono);
  font-size: 0.95rem;
  line-height: 1.8;
  min-height: 140px;
}

.panel-line {
  color: var(--cyan);
  white-space: pre;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: 0.05em;
  min-height: 1.8em;
}

.panel-line:first-child {
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.35rem;
  margin-bottom: 0.35rem;
}

.panel-nav {
  display: flex;
  border-bottom: 1px solid var(--border);
}

.panel-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 0.65rem 0.25rem;
  background: none;
  border: none;
  border-right: 1px solid var(--border);
  color: var(--text-dim);
  font-family: var(--font);
  font-size: 0.65rem;
  cursor: pointer;
  transition: all 0.2s;
}

.panel-btn:last-child { border-right: none; }
.panel-btn:hover { background: var(--bg-card-hover); color: var(--cyan); }
.panel-btn:active { background: var(--cyan-glow); }
.panel-btn svg { width: 20px; height: 20px; }

.panel-keypad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
}

.key-btn {
  padding: 0.85rem;
  background: var(--bg-card);
  border: none;
  color: var(--text);
  font-family: var(--mono);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}

.key-btn:hover { background: var(--bg-card-hover); }
.key-btn:active { background: var(--cyan-glow); color: var(--cyan); }

.key-wide { grid-column: span 2; }

.key-enter {
  background: var(--cyan-glow);
  color: var(--cyan);
  font-weight: 700;
}

.key-enter:hover { background: var(--cyan-glow-strong); }

.panel-status-msg {
  text-align: center;
  padding: 0.75rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--mono);
}

.panel-status-msg.connected { color: var(--green); }
.panel-status-msg.error { color: var(--red); }

/* === Responsive === */
@media (min-width: 481px) {
  #app {
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
  }
}

/* === Scrollbar === */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }