:root {
  --jcj-navy: #0f2740;
  --jcj-navy-deep: #0b1d30;
  --jcj-blue: #2f86c9;
  --jcj-blue-deep: #206eaf;
  --jcj-ice: #edf6fb;
  --jcj-sea: #d9edf8;
  --jcj-ink: #17212b;
  --jcj-muted: #5f7180;
  --jcj-panel: #ffffff;
  --jcj-border: rgba(15, 39, 64, 0.12);
  --jcj-shadow: 0 18px 44px rgba(15, 39, 64, 0.12);
  --jcj-shadow-sm: 0 6px 18px rgba(15, 39, 64, 0.08);
  --radius-lg: 1.1rem;
  --radius-full: 9999px;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --font-body: "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--jcj-ink);
  background:
    radial-gradient(circle at top right, rgba(47, 134, 201, 0.18), transparent 28%),
    linear-gradient(180deg, #f7fbfe 0%, #eef6fb 100%);
}

.app {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 12px;
}

.panel {
  width: min(1100px, 100%);
  background: var(--jcj-panel);
  border: 1px solid var(--jcj-border);
  border-radius: 1.4rem;
  overflow: hidden;
  box-shadow: var(--jcj-shadow);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  padding: 14px 18px;
  background: linear-gradient(135deg, var(--jcj-navy), var(--jcj-blue-deep));
  color: #fff;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.brand-lockup {
  width: 160px;
  max-width: 34vw;
  background: #fff;
  border-radius: 0.8rem;
  padding: 0.45rem 0.7rem;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.35);
}

.brand-lockup img {
  width: 100%;
  height: auto;
  display: block;
}

.brand-copy h1 {
  margin: 0;
  font-size: var(--text-xl);
  line-height: 1.05;
}

.brand-copy p {
  margin: 0.25rem 0 0;
  font-size: var(--text-sm);
  opacity: 0.92;
  letter-spacing: 0.03em;
}

.topbar-actions {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.popout-help-wrap {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.35rem;
}

.control-help {
  margin: 0;
  max-width: 19rem;
  font-size: 0.78rem;
  line-height: 1.3;
  color: rgba(255, 255, 255, 0.88);
  text-align: right;
}

.content {
  display: grid;
  gap: 18px;
  padding: 18px;
}

.hero,
.controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.hero {
  grid-template-columns: 1fr;
}

.clock-shell {
  background: linear-gradient(180deg, var(--jcj-ice), #ffffff);
  border: 1px solid rgba(47, 134, 201, 0.16);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 2.6vw, 2.4rem);
  position: relative;
  overflow: hidden;
  min-height: 340px;
  display: grid;
  align-content: center;
}

.clock-shell::after {
  content: "";
  position: absolute;
  inset: auto -10% -40% auto;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 134, 201, 0.18), rgba(47, 134, 201, 0));
}

.clock-label {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.8rem;
  border-radius: var(--radius-full);
  background: rgba(47, 134, 201, 0.12);
  color: var(--jcj-blue-deep);
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  width: fit-content;
}

.clock-display {
  position: relative;
  z-index: 1;
  margin: 1rem 0 0;
  text-align: center;
  font-size: clamp(3.4rem, 9vw, 7.4rem);
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--jcj-navy);
  font-variant-numeric: tabular-nums lining-nums;
  user-select: none;
}

.card {
  background: #fff;
  border: 1px solid var(--jcj-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--jcj-shadow-sm);
  padding: 1rem;
}

.card h2 {
  margin: 0 0 var(--space-3);
  font-size: var(--text-lg);
  color: var(--jcj-navy);
}

.input-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

label {
  display: grid;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--jcj-navy);
}

input[type="number"] {
  min-height: 46px;
  width: 100%;
  border: 1px solid var(--jcj-border);
  border-radius: 0.85rem;
  padding: 0.7rem 0.8rem;
  text-align: center;
  font-size: 1.05rem;
  color: var(--jcj-navy);
  background: #fff;
  font-variant-numeric: tabular-nums lining-nums;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

button {
  min-height: 44px;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  padding: 0.72rem 1rem;
  font-size: var(--text-sm);
  font-weight: 700;
  cursor: pointer;
  transition:
    transform var(--transition),
    background var(--transition),
    color var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}

button:hover {
  transform: translateY(-1px);
}

button:active {
  transform: translateY(0);
}

button:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(47, 134, 201, 0.28);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--jcj-blue);
  color: #fff;
  box-shadow: var(--jcj-shadow-sm);
}

.btn-primary:hover {
  background: var(--jcj-blue-deep);
}

.btn-navy {
  background: var(--jcj-navy);
  color: #fff;
  box-shadow: var(--jcj-shadow-sm);
}

.btn-navy:hover {
  background: var(--jcj-navy-deep);
}

.btn-ghost {
  background: #fff;
  color: var(--jcj-navy);
  border-color: var(--jcj-border);
}

.btn-ghost:hover {
  background: var(--jcj-ice);
}

.status {
  margin-top: var(--space-4);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  color: var(--jcj-muted);
  font-size: var(--text-sm);
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-full);
  background: var(--jcj-sea);
  color: var(--jcj-navy);
  font-weight: 700;
}

.clock-state-pill {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  z-index: 2;
  min-height: 32px;
  padding: 0.3rem 0.7rem;
  font-size: 0.82rem;
  box-shadow: var(--jcj-shadow-sm);
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(15, 39, 64, 0.1);
}

.notes {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--jcj-muted);
  line-height: 1.6;
}

.notes li + li {
  margin-top: 0.45rem;
}

.banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 0.9rem 1rem;
  border-top: 1px solid var(--jcj-border);
  background: #f8fbfe;
  color: var(--jcj-muted);
  font-size: var(--text-sm);
}

.banner strong {
  color: var(--jcj-navy);
}

@media (max-width: 920px) {
  .hero,
  .controls {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .app,
  .content,
  .topbar {
    padding: var(--space-4);
  }

  .topbar,
  .brand {
    flex-direction: column;
    align-items: flex-start;
  }

  .brand-lockup {
    width: 140px;
    max-width: 60vw;
  }

  .topbar-actions {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
  }

  .popout-help-wrap {
    align-items: stretch;
    width: 100%;
  }

  .control-help {
    max-width: 100%;
    text-align: left;
  }

  .topbar-actions button {
    width: 100%;
    justify-content: center;
  }

  .clock-shell {
    min-height: 280px;
    padding: 1.25rem;
  }

  .clock-display {
    letter-spacing: 0.04em;
    font-size: clamp(2.8rem, 11vw, 5.2rem);
  }

  .input-row {
    grid-template-columns: 1fr;
  }

  .banner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
  }
}