:root {
  --bg:           #000000;
  --bg-2:         #111114;
  --ink:          #f2efe6;
  --ink-soft:     #b8b5ac;
  --ink-dim:      #6a6a70;
  --ink-faint:    #2a2a2f;

  --chrome-1:     #d8dde2;
  --chrome-2:     #8a8f96;
  --chrome-3:     #44474c;

  --amber:        #ffb547;
  --amber-hi:     #ffd089;
  --amber-glow:   rgba(255, 181, 71, 0.55);
  --amber-faint:  rgba(255, 181, 71, 0.10);

  --red:          #ff4848;
  --red-glow:     rgba(255, 72, 72, 0.45);

  --pad-l:  168px;
  --pad-r:  40px;
  --pad-t:  26px;
  --pad-b:  26px;
}

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

html, body {
  width: 600px;
  height: 600px;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: "Space Grotesk", "SF Pro Display", "Inter", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  letter-spacing: -0.005em;
  font-weight: 500;
  font-size: 18px;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

button {
  font-family: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
  letter-spacing: inherit;
  text-align: right;
  padding: 0;
}

/* subtle horizontal scan to evoke HUD */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg, transparent 0px, transparent 3px,
    rgba(0,0,0,0.10) 4px, rgba(0,0,0,0.10) 5px
  );
  pointer-events: none;
  z-index: 200;
  mix-blend-mode: multiply;
}

#app {
  position: relative;
  width: 600px;
  height: 600px;
  overflow: hidden;
  background: var(--bg);
}

/* ────────── Screen base ────────── */
.screen {
  position: absolute;
  inset: 0;
  width: 600px;
  height: 600px;
  padding: var(--pad-t) var(--pad-r) var(--pad-b) var(--pad-l);
  display: flex;
  flex-direction: column;
  text-align: right;
  align-items: stretch;
}
.hidden { display: none !important; }

/* ────────── Header ────────── */
.head {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  font-size: 16px;
  letter-spacing: 0.18em;
  color: var(--ink-soft);
  text-transform: uppercase;
  font-weight: 600;
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 8px var(--amber-glow), 0 0 14px var(--amber-faint);
  animation: pulse 2s ease-in-out infinite;
}
.brand {
  color: var(--chrome-1);
  letter-spacing: 0.32em;
  font-weight: 700;
}
.serial {
  font-family: "Share Tech Mono", monospace;
  color: var(--ink-dim);
  letter-spacing: 0.08em;
  font-weight: 400;
  font-size: 15px;
  margin-left: 4px;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.5; }
}

/* ────────── Meta row (since timestamp) ────────── */
.meta-row {
  margin-top: 8px;
  display: flex;
  justify-content: flex-end;
  align-items: baseline;
  gap: 10px;
  font-size: 14px;
  color: var(--ink-dim);
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
.meta-label { color: var(--ink-faint); }
.meta-value {
  font-family: "Share Tech Mono", monospace;
  color: var(--ink-soft);
  letter-spacing: 0.1em;
  font-size: 15px;
}

/* ────────── Main display ────────── */
.display {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.display-frame {
  position: relative;
  padding: 14px 22px 12px;
  border-radius: 8px;
  background:
    linear-gradient(180deg, #050507 0%, #0c0c10 50%, #050507 100%);
  border: 1px solid #1a1a1f;
  box-shadow:
    inset 0 2px 6px rgba(0,0,0,0.9),
    inset 0 -1px 2px rgba(255,181,71,0.04),
    0 1px 0 rgba(216,221,226,0.05);
  overflow: hidden;
}

.display-digits {
  font-family: "Share Tech Mono", monospace;
  font-size: 132px;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--amber);
  text-shadow:
    0 0 4px var(--amber-glow),
    0 0 12px var(--amber-glow),
    0 0 26px rgba(255,181,71,0.35);
  font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
  position: relative;
  z-index: 1;
}

/* dim "ghost" 8s behind real digits to mimic 7-seg LCD */
.display-frame::before {
  content: "8888";
  position: absolute;
  top: 14px;
  right: 22px;
  font-family: "Share Tech Mono", monospace;
  font-size: 132px;
  line-height: 1;
  letter-spacing: 0.04em;
  color: rgba(255,181,71,0.05);
  z-index: 0;
  pointer-events: none;
}

.display-shimmer {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    rgba(255,255,255,0.04) 0%,
    rgba(255,255,255,0.00) 30%,
    rgba(255,255,255,0.00) 70%,
    rgba(0,0,0,0.25) 100%);
  pointer-events: none;
  z-index: 2;
}

.display-caption {
  margin-top: 8px;
  font-size: 14px;
  letter-spacing: 0.32em;
  color: var(--ink-dim);
  text-transform: uppercase;
  font-weight: 600;
}

/* tick flash on increment */
.display-digits.tick {
  animation: tickFlash 180ms ease-out;
}
@keyframes tickFlash {
  0%   { color: var(--amber-hi); text-shadow:
            0 0 6px var(--amber-hi),
            0 0 18px var(--amber-glow),
            0 0 38px var(--amber-glow); }
  100% { color: var(--amber); }
}
.display-digits.tick-down {
  animation: tickDown 180ms ease-out;
}
@keyframes tickDown {
  0%   { color: #ffe9b8; opacity: 0.6; }
  100% { color: var(--amber); opacity: 1; }
}

/* odometer-style digit roll for the units place */
.roller {
  display: inline-block;
  position: relative;
  overflow: hidden;
  vertical-align: top;
  height: 1em;
}
.roller-inner {
  display: block;
  transition: transform 180ms cubic-bezier(0.5, 0.0, 0.2, 1);
}

/* ────────── Stack (primary + secondary buttons, vertical) ────────── */
.stack {
  margin-top: 14px;
  flex: 1 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: stretch;
}

/* ────────── Bump button (primary) ────────── */
.bump {
  flex: 1 1 auto;
  min-height: 110px;
  position: relative;
  border-radius: 14px;
  background:
    linear-gradient(180deg, #26262c 0%, #1a1a20 50%, #131318 100%);
  border: 1.5px solid var(--chrome-2);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.10),
    inset 0 -2px 4px rgba(0,0,0,0.5),
    0 4px 14px rgba(0,0,0,0.5);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-align: center;
  transition: transform 80ms ease-out, box-shadow 80ms ease-out;
  cursor: pointer;
}
.bump:focus { outline: none; }
.bump:focus-visible,
.bump.focused {
  border-color: var(--amber);
  box-shadow:
    inset 0 1px 0 rgba(216,221,226,0.06),
    inset 0 -2px 4px rgba(0,0,0,0.5),
    0 0 0 2px var(--amber),
    0 0 22px var(--amber-glow);
}
.bump:active,
.bump.pressed {
  transform: translateY(1px);
  background: linear-gradient(180deg, #161619 0%, #0e0e12 50%, #0a0a0d 100%);
  box-shadow:
    inset 0 2px 6px rgba(0,0,0,0.6),
    inset 0 -1px 0 rgba(216,221,226,0.04);
}

.bump-plus {
  font-family: "Share Tech Mono", monospace;
  font-size: 56px;
  line-height: 1;
  color: #ffffff;
  letter-spacing: 0.03em;
  text-shadow:
    0 1px 0 #fff,
    0 0 10px rgba(255,255,255,0.5);
}
.bump-hint {
  font-size: 13px;
  letter-spacing: 0.32em;
  color: var(--ink-soft);
  text-transform: uppercase;
  font-weight: 600;
}

/* ring flash overlay on tap */
.bump::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 14px;
  pointer-events: none;
  background: radial-gradient(circle at center, var(--amber-faint), transparent 60%);
  opacity: 0;
  transition: opacity 220ms ease-out;
}
.bump.flash::after { opacity: 1; transition: opacity 30ms ease-out; }

/* ────────── Secondary controls ────────── */
.ctrl {
  width: 100%;
  min-height: 56px;
  border-radius: 10px;
  background: linear-gradient(180deg, #1f1f24 0%, #14141a 100%);
  border: 1.5px solid var(--chrome-2);
  color: #ffffff;
  font-size: 17px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 600;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.08),
    0 2px 6px rgba(0,0,0,0.4);
  transition: transform 80ms ease-out, border-color 120ms, color 120ms;
}
.ctrl:focus { outline: none; }
.ctrl:focus-visible,
.ctrl.focused {
  border-color: var(--amber);
  color: var(--amber-hi);
  box-shadow: 0 0 0 1px var(--amber), 0 0 16px var(--amber-faint);
}
.ctrl:active { transform: translateY(1px); }

.ctrl-glyph {
  font-family: "Share Tech Mono", monospace;
  letter-spacing: 0.12em;
}

.ctrl-reset {
  color: var(--chrome-1);
  border-color: var(--chrome-2);
}
.ctrl-reset:focus-visible,
.ctrl-reset.focused {
  border-color: var(--red);
  color: #ffb0b0;
  box-shadow: 0 0 0 1px var(--red), 0 0 16px var(--red-glow);
}

/* ────────── Hints footer ────────── */
.hints {
  margin-top: 10px;
  display: flex;
  justify-content: flex-end;
  gap: 14px;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--ink-soft);
  text-transform: uppercase;
}
.hints .key {
  color: var(--ink-dim);
  font-family: "Share Tech Mono", monospace;
  letter-spacing: 0;
  margin-right: 2px;
}

/* ────────── Reset confirm overlay ────────── */
.overlay {
  position: absolute;
  inset: 0;
  background: rgba(8,8,10,0.84);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0 var(--pad-r) 0 var(--pad-l);
  z-index: 50;
}
.overlay.hidden { display: none; }

.confirm-card {
  width: 100%;
  border-radius: 14px;
  background: linear-gradient(180deg, #1a1a1f 0%, #0d0d11 100%);
  border: 1px solid var(--red);
  box-shadow: 0 0 0 1px rgba(255,72,72,0.2), 0 12px 40px rgba(0,0,0,0.7), 0 0 28px var(--red-glow);
  padding: 22px 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.confirm-title {
  font-size: 16px;
  letter-spacing: 0.32em;
  color: #ffb0b0;
  text-transform: uppercase;
  font-weight: 700;
  text-align: right;
}
.confirm-body {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
  font-family: "Share Tech Mono", monospace;
}
.confirm-num {
  font-size: 44px;
  color: var(--amber);
  text-shadow: 0 0 10px var(--amber-glow);
  letter-spacing: 0.04em;
}
.confirm-arrow {
  font-size: 26px;
  color: var(--ink-dim);
}
.confirm-zero {
  font-size: 44px;
  color: var(--red);
  text-shadow: 0 0 10px var(--red-glow);
  letter-spacing: 0.04em;
}
.confirm-actions {
  display: flex;
  gap: 10px;
}
.ctrl-confirm {
  border-color: var(--red);
  color: #ffb0b0;
}
.ctrl-confirm:focus-visible,
.ctrl-confirm.focused {
  background: linear-gradient(180deg, #2a1010 0%, #180808 100%);
  box-shadow: 0 0 0 1px var(--red), 0 0 16px var(--red-glow);
}