:root {
  --accent: #fefefe;
  --accent-dim: rgba(255, 255, 255, 0.1);
  --bg: #0b0b0c;
  --panel: #1a1a1c;
  --border: #333;
  --text: #fefefe;
  --text-dim: #aaa;
  --text-mid: #888;
  --red: #ff5f5f;
  --red-dim: rgba(255, 95, 95, 0.1);
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 2rem 1rem;
}
.container {
  width: 100%;
  max-width: 760px;
}
.site-header {
  text-align: center;
  margin-bottom: 3rem;
}
.site-header h1 {
  font-weight: 800;
  font-size: 3rem;
  letter-spacing: 0.1em;
  color: var(--accent);
}
.header-rule {
  width: 50px;
  height: 1px;
  background: var(--accent-dim);
  margin: 0.9rem auto;
}
.site-header p {
  font-size: 1rem;
  color: var(--text-dim);
  letter-spacing: 0.2em;
}
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.6);
}
.clock-display,
.sw-display {
  text-align: center;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 2rem;
}
.panel-label {
  font-size: 0.85rem;
  color: var(--text-dim);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
}
.clock-display {
  display: flex;
  justify-content: center;
  align-items: center;
  font-weight: 700;
  color: var(--text);
  font-size: 5rem;
  margin-bottom: 1rem;
  gap: 1.5rem; 
}
.colon {
  color: var(--accent);
  margin: 0 2px;
  animation: blink 1s step-start infinite;
}

@keyframes blink {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 0.2; }
}
.ampm-badge {
  display: inline-block;
  background: var(--accent-dim);
  color: var(--accent);
  font-size: 0.65rem;
  padding: 4px 10px;
  border-radius: 4px;
  margin-left: 8px;
  vertical-align: middle;
}
.date-display {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-mid);
  letter-spacing: 0.2em;
}
.sw-main {
  font-size: 5rem;
}
.sw-dot {
  font-size: 2rem;
  color: var(--accent);
  opacity: 0.5;
  margin: 0 2px;
}

.sw-ms {
  font-size: 2rem;
  color: var(--text-dim);
}

.btn-row {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.sw-btn {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 0.7rem 2rem;
  border-radius: 6px;
  border: 1px solid;
  cursor: pointer;
  transition: all 0.25s ease;
  min-width: 110px;
  background: transparent;
}
.btn-start {
  color: var(--accent);
  border-color: rgba(255, 255, 255, 0.2);
  background: var(--accent-dim);
}
.btn-start:hover {
  background: var(--accent);
  color: var(--bg);
  transform: scale(1.05);
}
.btn-stop {
  color: var(--red);
  border-color: rgba(255, 95, 95, 0.3);
  background: var(--red-dim);
}

.btn-stop:hover {
  background: var(--red);
  color: var(--bg);
  transform: scale(1.05);
}
.btn-reset {
  color: var(--text-dim);
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.05);
}
.btn-reset:hover {
  color: var(--text-mid);
  border-color: #555;
  background: rgba(255, 255, 255, 0.1);
  transform: scale(1.03);
}
@media (max-width: 576px) {
  .clock-display { font-size: 3rem; }
  .sw-main { font-size: 3rem; }
  .sw-ms { font-size: 1.5rem; }
  .sw-dot { font-size: 1.5rem; }
}