:root {
  --ink: #182026;
  --soft: #5f6a74;
  --line: rgba(24, 32, 38, 0.16);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 8%, rgba(46, 140, 89, 0.22), transparent 28%),
    radial-gradient(circle at 85% 90%, rgba(236, 140, 42, 0.18), transparent 32%),
    linear-gradient(180deg, #f2f5eb, #e9eddf);
}

.app {
  width: min(900px, calc(100vw - 24px));
  margin: 20px auto;
  display: grid;
  gap: 12px;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.9);
}

h1,
h2 {
  margin: 0;
}

p {
  color: var(--soft);
}

.timer-wrap {
  margin-top: 10px;
  display: grid;
  gap: 7px;
}

.label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.timer {
  margin: 0;
  font-size: clamp(2rem, 8vw, 3.5rem);
  font-weight: 800;
  color: var(--ink);
}

.mode {
  margin: 0;
  font-family: Consolas, monospace;
  font-size: 0.85rem;
}

.progress-track {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: rgba(24, 32, 38, 0.12);
  overflow: hidden;
}

.progress-bar {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #2e8c59, #4fa76f);
  transition: width 150ms linear;
}

.actions {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

button {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  background: #fff;
  font-weight: 700;
  cursor: pointer;
}

.status {
  margin-top: 9px;
  font-family: Consolas, monospace;
}

.hint {
  margin-top: 8px;
  font-size: 0.82rem;
  font-family: Consolas, monospace;
}

.stats {
  margin: 10px 0 0;
  padding-left: 16px;
  display: grid;
  gap: 8px;
}

.stats li {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 8px;
}

h3 {
  margin: 12px 0 0;
}