@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@300;400;500&family=Instrument+Sans:wght@400;500;600;700&display=swap');

/* ─── Design Tokens ─── */
:root {
  --bg-deep: #050505;
  --bg-surface: #0c0c0e;
  --bg-raised: #141416;
  --bg-inset: #0a0a0b;

  --text-primary: #e8e4df;
  --text-secondary: #7a756e;
  --text-muted: #4a4640;

  --amber: #e8a84c;
  --amber-dim: #b8863c;
  --amber-glow: rgba(232, 168, 76, 0.15);
  --amber-glow-strong: rgba(232, 168, 76, 0.35);

  --red: #d94f4f;
  --red-dim: #8b3535;
  --red-glow: rgba(217, 79, 79, 0.4);

  --green: #4cad6a;
  --green-dim: #2d7a44;
  --green-glow: rgba(76, 173, 106, 0.35);

  --clock-face: #0e0e10;
  --clock-rim: #2a2824;
  --clock-tick: #3d3830;
  --clock-tick-hour: #6b6258;
  --hand-minute: #d4cfc7;
  --hand-second: #e86b4c;
  --hand-second-glow: rgba(232, 107, 76, 0.6);

  --font-mono: 'DM Mono', 'SF Mono', 'Cascadia Mono', monospace;
  --font-sans: 'Instrument Sans', -apple-system, sans-serif;

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Reset & Base ─── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Subtle noise texture overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
}

/* ─── App Layout ─── */
.app {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  height: 100svh;
  padding: clamp(1rem, 3vw, 2.5rem);
  gap: clamp(1rem, 3vh, 2rem);
  position: relative;
}

/* ─── Status Bar ─── */
#status-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  background: linear-gradient(to bottom, rgba(10, 10, 10, 0.95), transparent);
  z-index: 100;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 6px var(--red-glow);
  transition: all 0.4s var(--ease-in-out);
}

.dot.connected {
  background: var(--green);
  box-shadow: 0 0 6px var(--green-glow);
}

#status-text {
  transition: color 0.3s;
}

.status.running #status-text {
  color: var(--amber);
}

/* ─── Analog Clock ─── */
#analog-clock {
  width: clamp(200px, 42vmin, 420px);
  height: clamp(200px, 42vmin, 420px);
  flex-shrink: 0;
  filter: drop-shadow(0 0 40px rgba(0, 0, 0, 0.5));
}

.analog-clock-svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* Clock face */
.clock-face {
  fill: var(--clock-face);
  stroke: var(--clock-rim);
  stroke-width: 1.5;
  /* subtle inner glow via box-shadow is handled by the container */
}

/* Tick marks */
.tick-minute {
  stroke: var(--clock-tick);
  stroke-width: 0.8;
  stroke-linecap: round;
}

.tick-hour {
  stroke: var(--clock-tick-hour);
  stroke-width: 1.8;
  stroke-linecap: round;
}

.tick-highlight {
  stroke: var(--amber) !important;
  stroke-width: 2.2 !important;
  filter: drop-shadow(0 0 3px var(--amber-glow-strong)) drop-shadow(0 0 6px var(--amber-glow));
  transition: stroke 0.15s, stroke-width 0.15s, filter 0.15s;
}

/* Clock hands */
.hand-minute {
  stroke: var(--hand-minute);
  stroke-width: 2.5;
  stroke-linecap: round;
  filter: drop-shadow(0 0 2px rgba(212, 207, 199, 0.3));
}

.hand-second {
  stroke: var(--hand-second);
  stroke-width: 1.2;
  stroke-linecap: round;
  filter: drop-shadow(0 0 4px var(--hand-second-glow));
}

.center-dot {
  fill: var(--hand-second);
  filter: drop-shadow(0 0 3px var(--hand-second-glow));
}

/* ─── Digital Clock ─── */
#digital-clock {
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: clamp(2.8rem, 11vw, 7rem);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  text-shadow:
    0 0 30px var(--amber-glow),
    0 0 60px rgba(232, 168, 76, 0.05);
  line-height: 1;
  text-align: center;
  white-space: nowrap;
}

#digital-clock .tenths {
  font-size: 0.45em;
  color: var(--text-secondary);
  font-weight: 400;
  vertical-align: baseline;
  margin-left: -0.05em;
}

/* ─── Corner Footer ─── */
.corner-footer {
  position: absolute;
  bottom: clamp(0.8rem, 2vw, 1.5rem);
  bottom: max(clamp(0.8rem, 2vw, 1.5rem), env(safe-area-inset-bottom));
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: 0 clamp(0.8rem, 2vw, 1.5rem);
}

/* ─── Real Time Corner Display ─── */
#real-time {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.15rem;
}

#real-time-label {
  font-family: var(--font-sans);
  font-size: 0.55rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

#real-time-value {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: clamp(0.85rem, 2vw, 1.1rem);
  font-variant-numeric: tabular-nums;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
}

/* ─── Speed Badge ─── */
#speed-display {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.15rem;
}

#speed-label {
  font-family: var(--font-sans);
  font-size: 0.55rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

#speed-value {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(0.85rem, 2vw, 1.1rem);
  font-variant-numeric: tabular-nums;
  color: var(--amber-dim);
  letter-spacing: 0.03em;
}

/* ─── Lead Page: Auth Gate ─── */
#auth-gate {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(5, 5, 5, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  animation: fadeIn 0.4s var(--ease-out-expo);
}

#auth-gate.hidden {
  display: none;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.auth-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  padding: 2.5rem;
  max-width: 320px;
  width: 100%;
}

#auth-form {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  width: 100%;
}

.auth-box h2 {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.auth-box input[type="password"] {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--bg-inset);
  border: 1px solid var(--clock-rim);
  border-radius: 6px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 1rem;
  text-align: center;
  letter-spacing: 0.15em;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.auth-box input[type="password"]:focus {
  border-color: var(--amber-dim);
  box-shadow: 0 0 0 3px var(--amber-glow);
}

.auth-box input[type="password"]::placeholder {
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.auth-box button {
  width: 100%;
  padding: 0.7rem 1.5rem;
  background: var(--bg-raised);
  border: 1px solid var(--clock-rim);
  border-radius: 6px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s var(--ease-in-out);
}

.auth-box button:hover {
  background: var(--amber-dim);
  border-color: var(--amber);
  color: var(--bg-deep);
}

.auth-box button:active {
  transform: scale(0.97);
}

#auth-error {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--red);
  min-height: 1em;
}

#auth-error.hidden {
  visibility: hidden;
}

/* ─── Lead Page: Controls ─── */
#controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(0.8rem, 2vh, 1.2rem);
  width: 100%;
  max-width: 480px;
}

#controls.hidden {
  display: none;
}

/* Transport buttons (start/stop/reset) */
.transport {
  display: flex;
  gap: 0.6rem;
  width: 100%;
}

.transport button {
  flex: 1;
  padding: clamp(0.7rem, 1.5vh, 1rem) 0.5rem;
  border: 1px solid;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.15s var(--ease-in-out);
  position: relative;
  overflow: hidden;
}

.transport button::after {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.15s;
}

.transport button:active {
  transform: scale(0.96);
}

.transport button:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  transform: none;
}

#btn-start {
  background: rgba(76, 173, 106, 0.08);
  border-color: var(--green-dim);
  color: var(--green);
}

#btn-start:hover:not(:disabled) {
  background: rgba(76, 173, 106, 0.18);
  box-shadow: 0 0 20px var(--green-glow);
}

#btn-stop {
  background: rgba(232, 168, 76, 0.08);
  border-color: var(--amber-dim);
  color: var(--amber);
}

#btn-stop:hover:not(:disabled) {
  background: rgba(232, 168, 76, 0.18);
  box-shadow: 0 0 20px var(--amber-glow);
}

#btn-reset {
  background: rgba(217, 79, 79, 0.08);
  border-color: var(--red-dim);
  color: var(--red);
}

#btn-reset:hover:not(:disabled) {
  background: rgba(217, 79, 79, 0.18);
  box-shadow: 0 0 20px var(--red-glow);
}

/* Set time controls */
.set-time {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
}

.set-time-label {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.set-time-inputs {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.set-time-inputs input[type="number"] {
  width: 3.5rem;
  padding: 0.4rem 0.3rem;
  background: var(--bg-inset);
  border: 1px solid var(--clock-rim);
  border-radius: 5px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
  text-align: center;
  outline: none;
  transition: border-color 0.2s;
  -moz-appearance: textfield;
}

.set-time-inputs input[type="number"]::-webkit-inner-spin-button,
.set-time-inputs input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
}

.set-time-inputs input[type="number"]:focus {
  border-color: var(--amber-dim);
  box-shadow: 0 0 0 2px var(--amber-glow);
}

.set-time-inputs span {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.set-time-inputs button {
  padding: 0.4rem 0.8rem;
  background: var(--bg-raised);
  border: 1px solid var(--clock-rim);
  border-radius: 5px;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  margin-left: 0.3rem;
  transition: all 0.15s var(--ease-in-out);
}

.set-time-inputs button:hover {
  border-color: var(--amber-dim);
  color: var(--amber);
  background: rgba(232, 168, 76, 0.06);
}

.set-time-inputs button:active {
  transform: scale(0.96);
}

/* Speed controls */
.speed-controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
}

.speed-controls-label {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.speed-presets {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  justify-content: center;
}

.speed-presets button {
  padding: 0.45rem 0.7rem;
  background: var(--bg-raised);
  border: 1px solid var(--clock-rim);
  border-radius: 5px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 400;
  cursor: pointer;
  transition: all 0.15s var(--ease-in-out);
}

.speed-presets button:hover {
  border-color: var(--amber-dim);
  color: var(--amber);
  background: rgba(232, 168, 76, 0.06);
}

.speed-presets button.active {
  border-color: var(--amber);
  color: var(--amber);
  background: rgba(232, 168, 76, 0.12);
  box-shadow: 0 0 12px var(--amber-glow);
}

.speed-custom {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.speed-custom input[type="number"] {
  width: 5.5rem;
  padding: 0.4rem 0.5rem;
  background: var(--bg-inset);
  border: 1px solid var(--clock-rim);
  border-radius: 5px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
  text-align: center;
  outline: none;
  transition: border-color 0.2s;
  -moz-appearance: textfield;
}

.speed-custom input[type="number"]::-webkit-inner-spin-button,
.speed-custom input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
}

.speed-custom input[type="number"]:focus {
  border-color: var(--amber-dim);
  box-shadow: 0 0 0 2px var(--amber-glow);
}

.speed-custom span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ─── Highlight Controls ─── */
.highlight-controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.highlight-toggle {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-sans);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  cursor: pointer;
}

.highlight-toggle input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--bg-inset);
  border: 1px solid var(--clock-rim);
  border-radius: 3px;
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
  transition: all 0.15s var(--ease-in-out);
}

.highlight-toggle input[type="checkbox"]:checked {
  background: var(--amber-dim);
  border-color: var(--amber);
}

.highlight-toggle input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  left: 4.5px;
  top: 1.5px;
  width: 4px;
  height: 8px;
  border: solid var(--bg-deep);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.highlight-input {
  width: 3rem;
  padding: 0.25rem 0.2rem;
  background: var(--bg-inset);
  border: 1px solid var(--clock-rim);
  border-radius: 4px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
  text-align: center;
  outline: none;
  transition: border-color 0.2s;
  -moz-appearance: textfield;
}

.highlight-input::-webkit-inner-spin-button,
.highlight-input::-webkit-outer-spin-button {
  -webkit-appearance: none;
}

.highlight-input:focus {
  border-color: var(--amber-dim);
  box-shadow: 0 0 0 2px var(--amber-glow);
}

/* ─── QR Modal ─── */
#qr-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(5, 5, 5, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  animation: fadeIn 0.4s var(--ease-out-expo);
}

#qr-modal.hidden {
  display: none;
}

.qr-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.2rem;
  padding: 2.5rem;
  max-width: 360px;
  width: 100%;
}

.qr-box h2 {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

#qr-svg-container svg {
  width: min(280px, 70vw);
  height: auto;
  border-radius: 8px;
}

#qr-url-text {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--amber-dim);
  letter-spacing: 0.03em;
}

.qr-box button {
  width: 100%;
  padding: 0.7rem 1.5rem;
  background: var(--bg-raised);
  border: 1px solid var(--clock-rim);
  border-radius: 6px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s var(--ease-in-out);
}

.qr-box button:hover {
  background: var(--amber-dim);
  border-color: var(--amber);
  color: var(--bg-deep);
}

.qr-box button:active {
  transform: scale(0.97);
}

#btn-qr {
  width: 100%;
  padding: 0.6rem 1.2rem;
  background: var(--bg-raised);
  border: 1px solid var(--clock-rim);
  border-radius: 6px;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s var(--ease-in-out);
}

#btn-qr:hover {
  border-color: var(--amber-dim);
  color: var(--amber);
  background: rgba(232, 168, 76, 0.06);
}

#btn-qr:active {
  transform: scale(0.97);
}

/* ─── Responsive Adjustments ─── */

/* Small phones */
@media (max-height: 600px) {
  #analog-clock {
    width: clamp(140px, 30vmin, 240px);
    height: clamp(140px, 30vmin, 240px);
  }

  .app {
    gap: 0.6rem;
  }
}

/* Landscape phones */
@media (max-height: 500px) and (orientation: landscape) {
  .app {
    flex-direction: row;
    gap: clamp(1rem, 4vw, 2rem);
  }

  #analog-clock {
    width: clamp(160px, 40vh, 280px);
    height: clamp(160px, 40vh, 280px);
  }

  .main-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
  }
}

/* Large screens */
@media (min-width: 1200px) and (min-height: 800px) {
  #analog-clock {
    width: min(50vmin, 500px);
    height: min(50vmin, 500px);
  }

  #digital-clock {
    font-size: 7.5rem;
  }
}

/* Lead page with controls needs tighter spacing */
.app.lead-app {
  justify-content: flex-start;
  padding-top: clamp(2.5rem, 5vh, 4rem);
  gap: clamp(0.6rem, 2vh, 1.5rem);
}

.app.lead-app #analog-clock {
  width: clamp(150px, 28vmin, 320px);
  height: clamp(150px, 28vmin, 320px);
}

.app.lead-app #digital-clock {
  font-size: clamp(2rem, 8vw, 5rem);
}

/* ─── Fullscreen Button ─── */
#btn-fullscreen {
  position: fixed;
  top: 0.5rem;
  right: 0.75rem;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: transparent;
  border: none;
  border-radius: 5px;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
  padding: 0;
}

#btn-fullscreen:hover {
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.05);
}

#btn-fullscreen svg {
  display: block;
}

/* ─── Utility ─── */
.hidden {
  display: none !important;
}

/* Selection color */
::selection {
  background: var(--amber-dim);
  color: var(--bg-deep);
}

/* Scrollbar (if ever needed) */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-deep);
}

::-webkit-scrollbar-thumb {
  background: var(--clock-rim);
  border-radius: 3px;
}