:root {
  --bg: #181818;
  --card: #282828;
  --text: #e0e0e0;
  --accent: #14bae4;
  --border: #303030;
}

body {
  background-color: var(--bg);
  color: var(--text);
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  gap: 1.875rem;
  transition: background-color 0.3s ease;
}

body.is-on {
  background-color: var(--card);
}

.header {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: 0.075rem;
  color: var(--text);
  margin: 0;
  text-align: center;
}

/* Toggle button */
.wake-toggle {
  position: relative;
  background: var(--bg);
  border: 0.09375rem solid var(--border);
  border-radius: 50%;
  width: 13.5rem;
  height: 13.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.wake-toggle:hover {
  border-color: var(--accent);
}

.wake-toggle:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.wake-toggle:disabled:hover {
  border-color: var(--border);
}

/* Gentle idle pulse inviting a click while asleep */
.wake-toggle:not(.is-on):not(:disabled) {
  animation: idle-pulse 3s ease-in-out infinite;
}

@keyframes idle-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(20, 186, 228, 0.12); }
  50% { box-shadow: 0 0 1.125rem 0.15rem rgba(20, 186, 228, 0.25); }
}

.eye-icon {
  width: 7.5rem;
  height: auto;
  position: relative;
  z-index: 1;
}

.eye-closed {
  stroke: var(--text);
  stroke-width: 5;
  stroke-linecap: round;
  opacity: 0.6;
  transition: opacity 0.3s ease;
}

.eye-open {
  transition: opacity 0.3s ease;
  opacity: 0;
}

.eye-outline {
  fill: none;
  stroke: var(--text);
  stroke-width: 5;
}

.pupil {
  fill: var(--accent);
  transition: fill 0.3s ease;
}

/* Active state: eye opens, glows, and breathes */
.wake-toggle.is-on .eye-closed {
  opacity: 0;
}

.wake-toggle.is-on .eye-open {
  opacity: 1;
}

.wake-toggle.is-on {
  border-color: var(--accent);
  animation: glow 2.4s ease-in-out infinite;
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 0.375rem 0 rgba(20, 186, 228, 0.25); }
  50% { box-shadow: 0 0 2.25rem 0.375rem rgba(20, 186, 228, 0.45); }
}

/* Radar-style pulse rings while active */
.pulse-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 0.09375rem solid var(--accent);
  opacity: 0;
}

.wake-toggle.is-on .pulse-ring {
  animation: pulse-out 2.4s ease-out infinite;
}

.wake-toggle.is-on .pulse-ring.delay {
  animation-delay: 1.2s;
}

@keyframes pulse-out {
  0% { transform: scale(1); opacity: 0.5; }
  100% { transform: scale(1.4); opacity: 0; }
}

.status-text {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--text);
  opacity: 0.6;
  white-space: nowrap;
  transition: color 0.3s ease, opacity 0.3s ease;
}

.status-text.is-on {
  color: var(--accent);
  opacity: 1;
}

.status-dot {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--border);
  flex-shrink: 0;
  transition: background-color 0.3s ease;
}

.status-text.is-on .status-dot {
  background: var(--accent);
  animation: dot-glow 2.4s ease-in-out infinite;
}

@keyframes dot-glow {
  0%, 100% { box-shadow: 0 0 0.3rem 0 rgba(20, 186, 228, 0.4); }
  50% { box-shadow: 0 0 0.75rem 0.225rem rgba(20, 186, 228, 0.8); }
}

.unsupported {
  font-size: 1.2rem;
  opacity: 0.7;
  text-align: center;
  max-width: 30rem;
}

.hidden {
  display: none;
}