:root {
  --bg: #f4efe7;
  --bg-accent: radial-gradient(circle at 20% 10%, #ffd8a8 0%, transparent 40%),
    radial-gradient(circle at 80% 0%, #c7e7ff 0%, transparent 38%),
    linear-gradient(180deg, #f4efe7 0%, #fffaf2 100%);
  --surface: #ffffff;
  --surface-alt: #f5f7fb;
  --text: #1e1f24;
  --muted: #51576a;
  --brand: #0c7a56;
  --brand-strong: #0a5f44;
  --danger: #b14646;
  --ring: #123b7a;
  --border: #d8dbe3;
  --shadow: 0 18px 45px rgba(18, 30, 58, 0.12);
}

:root[data-theme="dark"] {
  --bg: #101520;
  --bg-accent: radial-gradient(circle at 0% 0%, #25314d 0%, transparent 40%),
    radial-gradient(circle at 100% 0%, #1b4b45 0%, transparent 32%),
    linear-gradient(180deg, #0e121c 0%, #151d2c 100%);
  --surface: #1a2335;
  --surface-alt: #111b2b;
  --text: #eaf2ff;
  --muted: #b5c1d8;
  --brand: #63d2a8;
  --brand-strong: #35b485;
  --danger: #e68f8f;
  --ring: #8db5ff;
  --border: #2d3851;
  --shadow: 0 24px 60px rgba(2, 6, 14, 0.45);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg-accent);
  min-height: 100vh;
  line-height: 1.45;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
  white-space: nowrap;
}

a {
  color: var(--brand-strong);
  text-decoration-thickness: 2px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--ring);
  outline-offset: 2px;
}

.site-header,
.site-footer {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.site-header {
  padding: 1rem 0;
}

.site-title {
  margin: 0;
  font-family: "Bricolage Grotesque", "Trebuchet MS", sans-serif;
  font-size: clamp(1.25rem, 2.5vw, 1.8rem);
  letter-spacing: 0.02em;
}

.header-row {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.main-nav {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.theme-btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 0.55rem 0.8rem;
  border-radius: 0.8rem;
  cursor: pointer;
}

.page {
  width: min(1120px, 92vw);
  margin: 0 auto;
  padding-bottom: 2rem;
}

.hero {
  background: var(--surface);
  border-radius: 1.2rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  padding: 1rem;
}

.hero h1 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-family: "Bricolage Grotesque", "Trebuchet MS", sans-serif;
  line-height: 1.1;
  font-size: clamp(1.6rem, 4.2vw, 2.6rem);
}

.timer-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.timer-panel {
  background: linear-gradient(150deg, var(--surface-alt), var(--surface));
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1rem;
}

.timer-panel.is-complete {
  animation: pulse 0.9s ease-out;
}

.timer-value {
  margin: 0;
  font-family: "Bricolage Grotesque", "Trebuchet MS", sans-serif;
  font-size: clamp(3rem, 14vw, 6rem);
  line-height: 1;
  letter-spacing: 0.03em;
  text-align: center;
}

.status-line {
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  margin-top: 0.8rem;
  font-weight: 700;
  flex-wrap: wrap;
}

.task-row {
  margin-top: 0.8rem;
}

.task-row label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

input[type="text"],
input[type="number"] {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 0.7rem;
  font-size: 1rem;
  padding: 0.62rem 0.68rem;
  background: var(--surface);
  color: var(--text);
}

.control-grid,
.preset-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.6rem;
}

.btn {
  border: 1px solid transparent;
  background: var(--surface);
  color: var(--text);
  border-radius: 0.9rem;
  padding: 0.78rem 0.9rem;
  min-height: 46px;
  cursor: pointer;
  font-weight: 700;
}

.btn-primary {
  background: var(--brand);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--brand-strong);
}

.btn-danger {
  background: #fff0f0;
  border-color: #ffc9c9;
  color: var(--danger);
}

.quick-settings {
  border-top: 1px dashed var(--border);
  margin-top: 1rem;
  padding-top: 1rem;
}

.custom-row {
  display: grid;
  gap: 0.55rem;
  grid-template-columns: 1fr 1fr;
}

.inline-check {
  margin-top: 0.7rem;
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
}

.announce {
  min-height: 1.5em;
  margin-top: 0.8rem;
  color: var(--muted);
  font-weight: 600;
}

.support-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1rem;
}

.ad-slot {
  margin: 1rem 0;
  border: 2px dashed var(--border);
  border-radius: 0.9rem;
  padding: 0.9rem;
  background: color-mix(in oklab, var(--surface), transparent 20%);
}

.ad-slot p {
  margin: 0;
  font-weight: 700;
  color: var(--muted);
  text-align: center;
}

.site-footer {
  margin-top: 2rem;
  margin-bottom: 1.4rem;
  font-size: 0.95rem;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.focus-mode .secondary,
.focus-mode .ad-slot,
.focus-mode .site-footer,
.focus-mode .main-nav,
.focus-mode .hero-copy {
  display: none;
}

.focus-mode .timer-value {
  font-size: clamp(4rem, 17vw, 8rem);
}

@media (min-width: 760px) {
  .timer-grid {
    grid-template-columns: 1.3fr 1fr;
    align-items: start;
  }

  .control-grid,
  .preset-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .support-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(12, 122, 86, 0.45);
  }
  100% {
    box-shadow: 0 0 0 16px rgba(12, 122, 86, 0);
  }
}