:root {
  --fg: #fff;
  --bg: #000;
  --muted: rgba(255,255,255,0.65);
}

* { box-sizing: border-box; }

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  cursor: none;
  user-select: none;
}

#grid {
  width: 100%;
  height: 100%;
  padding: 3.0vh 3.0vw;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 1fr 1fr 1fr;
  gap: 2.5vh 2.5vw;
}

#tl { grid-column: 1; grid-row: 1; align-self: start; justify-self: start; }
#tr { grid-column: 3; grid-row: 1; align-self: start; justify-self: end; text-align: right; }
#bl { grid-column: 1; grid-row: 3; align-self: end; justify-self: start; }
#br { grid-column: 3; grid-row: 3; align-self: end; justify-self: end; text-align: right; }

#center { grid-column: 2; grid-row: 2; }

.panel {
  max-width: 34vw;
}

.clockDate {
  font-size: clamp(16px, 2.8vw, 44px);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.05;
}

.clockTime {
  font-size: clamp(28px, 4.2vw, 70px);
  font-weight: 700;
  line-height: 1.0;
  margin-top: 0.35rem;
}

.panelTitle {
  font-size: clamp(14px, 1.3vw, 18px);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
  color: var(--muted);
}

.muted {
  margin-top: 0.6rem;
  font-size: clamp(12px, 1.1vw, 14px);
  color: var(--muted);
}

.scrollBox {
  max-height: 26vh;
  overflow: hidden auto;
  padding-right: 0.4rem;
}

.row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.6rem;
  align-items: baseline;
  font-size: clamp(12px, 1.2vw, 16px);
  line-height: 1.25;
  padding: 0.18rem 0;
}

.row .left { opacity: 0.9; }
.row .mid { color: var(--muted); }
.row .right { font-weight: 650; }

#tr .row { grid-template-columns: auto 1fr auto; }
#br .row { grid-template-columns: 1fr; }
#br .row a { color: var(--fg); text-decoration: none; }
#br .row a:visited { color: var(--fg); }

.modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(0,0,0,0.85);
}

.modal.hidden { display: none; }

.modalCard {
  width: min(520px, 92vw);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 14px;
  padding: 18px 16px;
  background: rgba(0,0,0,0.9);
}

.modalTitle {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.modalHint {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 12px;
}

#locationForm {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

#locationInput {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.22);
  background: #050505;
  color: #fff;
  font-size: 16px;
  outline: none;
}

#locationForm button {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.22);
  background: #101010;
  color: #fff;
  font-weight: 700;
}

.error {
  margin-top: 10px;
  color: #ffb3b3;
  font-size: 13px;
}

@media (max-width: 900px) {
  #grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto 1fr auto;
  }
  #center { display: none; }
  #tl { grid-column: 1; grid-row: 1; }
  #tr { grid-column: 2; grid-row: 1; }
  #bl { grid-column: 1; grid-row: 3; }
  #br { grid-column: 2; grid-row: 3; }
  .panel { max-width: 46vw; }
}