* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #0a0a0f;
  --surface: #12121a;
  --surface2: #1a1a26;
  --border: #2a2a3a;
  --text: #e4e4ed;
  --text2: #8888a0;
  --accent: #0ea5e9;
  --accent-glow: rgba(14, 165, 233, 0.3);
  --green: #22c55e;
  --green-glow: rgba(34, 197, 94, 0.3);
  --red: #ef4444;
  --red-glow: rgba(239, 68, 68, 0.3);
  --orange: #f59e0b;
  --radius: 16px;
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.app {
  height: 100%;
  max-width: 480px;
  margin: 0 auto;
}

.screen {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.hidden { display: none !important; }

/* ── Setup Screen ── */
.setup-card {
  margin: auto;
  padding: 40px 30px;
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 90%;
  max-width: 360px;
}

.setup-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.setup-card h2 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.setup-card p {
  color: var(--text2);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.setup-card input {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-size: 1.1rem;
  text-align: center;
  outline: none;
  margin-bottom: 16px;
  transition: border-color 0.2s;
}

.setup-card input:focus {
  border-color: var(--accent);
}

.btn-primary {
  width: 100%;
  padding: 14px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn-primary:active { opacity: 0.8; }

.error {
  color: var(--red);
  font-size: 0.85rem;
  margin-top: 12px;
}

/* ── Main Screen ── */
header {
  padding: 16px 20px 0;
}

.status-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text2);
  margin-bottom: 8px;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.dot.online {
  background: var(--green);
  box-shadow: 0 0 8px var(--green-glow);
}

.dot.offline {
  background: var(--red);
  box-shadow: 0 0 8px var(--red-glow);
}

.btn-icon {
  margin-left: auto;
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  padding: 4px;
}

header h1 {
  font-size: 1.5rem;
  font-weight: 700;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  gap: 24px;
}

/* ── Door Visualization ── */
.door-container {
  text-align: center;
}

.door-frame {
  width: 140px;
  height: 200px;
  border: 3px solid var(--border);
  border-radius: 8px 8px 0 0;
  margin: 0 auto;
  perspective: 600px;
  background: var(--surface);
  overflow: hidden;
}

.door {
  width: 100%;
  height: 100%;
  background: var(--surface2);
  border: 2px solid var(--border);
  transform-origin: left center;
  transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              background 0.5s,
              border-color 0.5s;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 16px;
}

.door.closed {
  transform: rotateY(0deg);
  border-color: var(--red);
  background: linear-gradient(135deg, var(--surface2), rgba(239, 68, 68, 0.05));
}

.door.open {
  transform: rotateY(-65deg);
  border-color: var(--green);
  background: linear-gradient(135deg, var(--surface2), rgba(34, 197, 94, 0.05));
}

.door-handle {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text2);
  box-shadow: 0 0 4px rgba(0,0,0,0.5);
  transition: background 0.3s;
}

.door.open .door-handle {
  background: var(--green);
}

.door.closed .door-handle {
  background: var(--red);
}

.status-label {
  margin-top: 16px;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 2px;
  transition: color 0.3s;
}

.status-label.open { color: var(--green); }
.status-label.closed { color: var(--red); }

.angle-label {
  font-size: 0.85rem;
  color: var(--text2);
  margin-top: 4px;
}

.auto-close-timer {
  font-size: 0.85rem;
  margin-top: 6px;
  padding: 4px 8px;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  opacity: 0;
  transform: translateY(-5px);
  height: 0;
  overflow: hidden;
}

.auto-close-timer.visible {
  opacity: 1;
  transform: translateY(0);
  height: auto;
  margin-top: 8px;
}

.auto-close-timer.normal {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(14, 165, 233, 0.1);
}

.auto-close-timer.warning {
  color: var(--orange);
  border-color: var(--orange);
  background: rgba(245, 158, 11, 0.1);
}

.auto-close-timer.danger {
  color: var(--red);
  border-color: var(--red);
  background: rgba(239, 68, 68, 0.1);
  animation: pulse 1s infinite;
}

/* ── Action Buttons ── */
.btn-row {
  display: flex;
  gap: 16px;
  width: 100%;
  max-width: 380px;
}

.btn-action {
  flex: 1;
  padding: 32px 20px;
  border: 2px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-action .btn-icon {
  font-size: 2rem;
}

.btn-action .btn-text {
  letter-spacing: 1px;
}

.btn-action.open {
  border-color: var(--green);
  color: var(--green);
}

.btn-action.open:active {
  background: rgba(34, 197, 94, 0.1);
  box-shadow: 0 0 24px var(--green-glow);
  transform: scale(0.96);
}

.btn-action.close {
  border-color: var(--red);
  color: var(--red);
}

.btn-action.close:active {
  background: rgba(239, 68, 68, 0.1);
  box-shadow: 0 0 24px var(--red-glow);
  transform: scale(0.96);
}

.btn-action:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.btn-action.loading .btn-text {
  animation: pulse 1s infinite;
}

/* ── Footer ── */
footer {
  padding: 12px 20px;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text2);
}

/* ── Loading animation ── */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}