:root {
  color-scheme: light;
  --ink: #12231d;
  --muted: #62736b;
  --line: #d9e7df;
  --paper: #f7faf7;
  --card: #ffffff;
  --green: #1f6f55;
  --mint: #7bd9a5;
  --blue: #2f6f97;
  --gold: #b98a22;
  --violet: #7651a8;
  --shadow: 0 18px 40px rgba(22, 54, 42, 0.12);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 0%, rgba(123, 217, 165, 0.24), transparent 28rem),
    linear-gradient(160deg, #f7faf7 0%, #edf5f0 52%, #f8f4ec 100%);
  color: var(--ink);
}

button {
  font: inherit;
}

.app-shell {
  width: min(100%, 860px);
  margin: 0 auto;
  padding: max(18px, env(safe-area-inset-top)) 16px max(28px, env(safe-area-inset-bottom));
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.eyebrow,
.hero-copy p {
  margin: 0 0 3px;
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(1.65rem, 8vw, 2.6rem);
  line-height: 1;
}

.icon-button {
  display: grid;
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  color: var(--green);
  box-shadow: 0 8px 22px rgba(25, 72, 53, 0.1);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  overflow: hidden;
  min-height: 260px;
  padding: 22px;
  border-radius: 18px;
  background:
    linear-gradient(135deg, rgba(31, 111, 85, 0.88), rgba(47, 111, 151, 0.86)),
    url("assets/hero.svg") center/cover;
  color: #fff;
  box-shadow: var(--shadow);
}

.hero h2 {
  max-width: 13ch;
  margin-bottom: 10px;
  font-size: clamp(2.25rem, 13vw, 4.7rem);
  line-height: 0.92;
}

.hero-copy span {
  display: block;
  max-width: 36rem;
  color: rgba(255, 255, 255, 0.86);
  font-weight: 700;
}

.water-card {
  align-self: end;
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: 360px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(10px);
}

.water-ring {
  display: flex;
  align-items: baseline;
  justify-content: center;
  flex: 0 0 76px;
  width: 76px;
  height: 76px;
  border: 7px solid rgba(255, 255, 255, 0.28);
  border-top-color: #fff;
  border-radius: 999px;
}

.water-ring span {
  font-size: 1.8rem;
  font-weight: 900;
}

.water-card p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.92rem;
}

.quick-actions {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 7px;
  margin: 14px 0;
}

.glass {
  aspect-ratio: 1;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--blue);
  font-weight: 900;
  box-shadow: 0 6px 16px rgba(25, 72, 53, 0.08);
}

.glass.filled {
  border-color: #2f6f97;
  background: #d8f0ff;
}

.tabs {
  position: sticky;
  top: 0;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  padding: 8px 0;
  background: linear-gradient(180deg, rgba(247, 250, 247, 0.96), rgba(247, 250, 247, 0.82));
  backdrop-filter: blur(12px);
}

.tab {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--muted);
  font-weight: 800;
}

.tab.active {
  border-color: var(--green);
  background: var(--green);
  color: #fff;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
  margin: 18px 0 10px;
}

.section-heading h2 {
  margin: 0;
  font-size: 1.12rem;
}

.section-heading span {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 800;
}

.lower {
  margin-top: 24px;
}

.timeline,
.list-grid,
.swap-list,
.expect-list {
  display: grid;
  gap: 10px;
}

.task,
.info-card,
.swap,
.expect {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 8px 22px rgba(25, 72, 53, 0.07);
}

.task {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  padding: 14px;
}

.task input {
  width: 24px;
  height: 24px;
  accent-color: var(--green);
}

.task h3,
.info-card h3,
.swap strong,
.expect strong {
  margin: 0 0 6px;
  font-size: 1rem;
}

.task ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.task li + li {
  margin-top: 5px;
}

.day-picker {
  display: grid;
  grid-template-columns: repeat(7, minmax(72px, 1fr));
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.day-button {
  min-height: 58px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  font-weight: 900;
}

.day-button span {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
}

.day-button.active {
  border-color: var(--blue);
  background: #e6f3fb;
}

.info-card,
.swap,
.expect {
  padding: 14px;
}

.info-card p,
.swap p,
.expect p {
  margin-bottom: 0;
  color: var(--muted);
}

.rules-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 0;
  list-style: none;
  counter-reset: rules;
}

.rules-list li {
  counter-increment: rules;
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--muted);
}

.rules-list li::before {
  content: counter(rules);
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border-radius: 8px;
  background: var(--green);
  color: #fff;
  font-weight: 900;
}

.note {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 0.86rem;
  text-align: center;
}

@media (min-width: 720px) {
  .hero {
    grid-template-columns: 1fr 340px;
    align-items: end;
  }

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

@media (max-width: 420px) {
  .app-shell {
    padding-left: 12px;
    padding-right: 12px;
  }

  .hero {
    padding: 18px;
    border-radius: 14px;
  }

  .quick-actions {
    gap: 5px;
  }

  .glass {
    font-size: 0.85rem;
  }
}