:root {
  --bg: #0d0e12;
  --surface: #16181f;
  --surface-alt: #1e2129;
  --border: #2a2e3a;
  --text: #c8cdd8;
  --heading: #f0f1f5;
  --muted: #8b8fa3;
  --accent: #5b8def;
  --accent-light: #3b9fea;
  --shadow-md: rgba(0, 0, 0, 0.32);
  --shadow-lg: rgba(0, 0, 0, 0.5);
}

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

html,
body {
  height: 100%;
  background-color: var(--bg);
  color: var(--text);
  font-family: "Poppins", sans-serif;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

#app {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.wrapper {
  width: 100%;
  max-width: 680px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.5rem;
  animation: fadeUp 0.55s cubic-bezier(0.4, 0, 0.2, 1) both;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Header */

.header {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.branding {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.overline {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 600;
  color: var(--heading);
  line-height: 1.3;
}

.birthday-line {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0.01em;
}

/* Countdown grid */

.countdown-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  width: 100%;
}

.countdown-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.75rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.countdown-block:hover {
  border-color: rgba(91, 141, 239, 0.35);
  box-shadow: 0 4px 20px var(--shadow-md);
}

.number {
  display: inline-flex;
  font-size: clamp(2.2rem, 6vw, 3.5rem);
  font-weight: 700;
  color: var(--heading);
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

/* Each digit is its own independent mechanical dial */
.digit-wrap {
  position: relative;
  display: inline-block;
  width: 0.66em;
  height: 1.1em;
  overflow: hidden;
  perspective: 240px;
  background: transparent;
}

.digit-face {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  backface-visibility: hidden;
  will-change: transform, filter;
}

/* Odometer roll: incoming digit drops from above into position, outgoing
   digit continues rotating downward and out — both move the same
   direction, like numbers scrolling past a window on a physical drum.
   3D rotateX adds the curvature of a rotating dial; filter fakes the
   highlight/shadow shift a real dial gets as it turns. */
.dial-enter-active,
.dial-leave-active {
  transition: transform 560ms cubic-bezier(0.16, 1, 0.3, 1),
    filter 560ms cubic-bezier(0.16, 1, 0.3, 1);
  transform-style: preserve-3d;
}

.dial-enter-from {
  transform: translateY(-100%) rotateX(40deg);
  filter: brightness(0.8);
}

.dial-enter-to {
  transform: translateY(0) rotateX(0deg);
  filter: brightness(1);
}

.dial-leave-from {
  transform: translateY(0) rotateX(0deg);
  filter: brightness(1);
}

.dial-leave-to {
  transform: translateY(100%) rotateX(-40deg);
  filter: brightness(0.8);
}

.dial-leave-active {
  position: absolute;
  inset: 0;
}

.label {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

/* Progress bar */

.progress-wrap {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.progress-label {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.progress-pct {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.progress-track {
  width: 100%;
  height: 4px;
  background: var(--surface);
  border-radius: 99px;
  position: relative;
  overflow: visible;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-light) 100%);
  border-radius: 99px;
  transition: width 1s linear;
}

.progress-marker {
  position: absolute;
  top: 50%;
  width: 10px;
  height: 10px;
  background: var(--accent-light);
  border: 2px solid var(--bg);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 8px rgba(59, 159, 234, 0.5);
  transition: left 1s linear;
}

/* Timezone */

.timezone-info {
  display: flex;
  align-items: stretch;
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.tz-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.875rem 1.1rem;
}

.tz-divider {
  width: 1px;
  background: var(--border);
  flex-shrink: 0;
}

.tz-label {
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.tz-offset {
  font-size: 0.55rem;
  color: var(--muted);
  letter-spacing: 0;
  font-weight: 400;
}

.tz-value {
  font-size: 0.7rem;
  color: var(--muted);
  line-height: 1.4;
  word-break: break-word;
}

/* Responsive */

@media (max-width: 480px) {
  .countdown-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .countdown-block {
    padding: 1.5rem 1rem;
  }

  .timezone-info {
    flex-direction: column;
  }

  .tz-divider {
    width: unset;
    height: 1px;
  }
}