:root {
  --bg: #f4f7f6;
  --bg-elev: #ffffff;
  --ink: #1a2b32;
  --muted: #5a6f78;
  --line: #d5e0e4;
  --accent: #1f6f78;
  --accent-ink: #ffffff;
  --main: #2a6b4f;
  --warn: #9a5b1a;
  --danger: #9b2c2c;
  --phase-1: #c9dbe8;
  --phase-2: #cfe8d6;
  --phase-3: #f0dcc4;
  --phase-4: #ddd0e8;
  --radius: 14px;
  --touch: 44px;
  --font: "Segoe UI", "Helvetica Neue", system-ui, sans-serif;
  --shadow: 0 10px 30px rgba(26, 58, 74, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f171a;
    --bg-elev: #172328;
    --ink: #e7eef1;
    --muted: #9bb0b8;
    --line: #2a3b42;
    --accent: #3aa0aa;
    --accent-ink: #061216;
    --main: #4caf82;
    --warn: #e0a45a;
    --danger: #e07070;
    --phase-1: #243540;
    --phase-2: #243a30;
    --phase-3: #3a3024;
    --phase-4: #322840;
    --shadow: none;
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(31, 111, 120, 0.12), transparent 60%),
    radial-gradient(900px 400px at 100% 0%, rgba(42, 107, 79, 0.1), transparent 55%),
    var(--bg);
  color: var(--ink);
  font-family: var(--font);
}

body {
  padding-bottom: calc(64px + env(safe-area-inset-bottom));
}

.hidden {
  display: none !important;
}

#app {
  max-width: 720px;
  margin: 0 auto;
}

.login-panel {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 2rem 1.25rem;
}

.brand {
  font-size: clamp(2.5rem, 10vw, 3.5rem);
  letter-spacing: -0.03em;
  font-weight: 700;
  color: var(--accent);
}

.brand-sm {
  font-size: 1.1rem;
  color: var(--accent);
}

.lede {
  color: var(--muted);
  max-width: 28ch;
  line-height: 1.45;
}

label {
  display: block;
  margin: 1.25rem 0 0.4rem;
  font-size: 0.9rem;
  color: var(--muted);
}

input[type="password"],
input[type="text"],
textarea {
  width: 100%;
  min-height: var(--touch);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.7rem 0.9rem;
  background: var(--bg-elev);
  color: var(--ink);
  font-size: 1rem;
}

.btn {
  min-height: var(--touch);
  min-width: var(--touch);
  border: 0;
  border-radius: 12px;
  padding: 0.7rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}

.btn.primary {
  background: var(--accent);
  color: var(--accent-ink);
  width: 100%;
  margin-top: 1rem;
}

.btn.ghost {
  background: transparent;
  color: var(--muted);
}

.btn.done {
  background: var(--main);
  color: #fff;
  width: 100%;
}

.btn.done.is-done {
  background: transparent;
  color: var(--main);
  border: 1px solid var(--main);
}

.error {
  color: var(--danger);
  margin-top: 0.75rem;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  z-index: 5;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.avatar-slot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--main));
  opacity: 0.85;
}

#main {
  padding: 0.5rem 1rem 1.5rem;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  color: var(--muted);
  font-size: 0.92rem;
  margin-bottom: 1rem;
}

.meta strong {
  color: var(--ink);
  font-weight: 650;
}

.banner {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
}

.banner.warn {
  border-color: color-mix(in srgb, var(--warn) 40%, var(--line));
}

.slot-group {
  margin-bottom: 1.25rem;
}

.slot-group h2 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 0 0 0.5rem;
}

.task {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.95rem 1rem;
  margin-bottom: 0.65rem;
  box-shadow: var(--shadow);
}

.task.main {
  border-left: 4px solid var(--main);
}

.task h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  line-height: 1.3;
}

.task .kind {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.task p {
  margin: 0 0 0.8rem;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.4;
}

.task a {
  color: var(--accent);
}

.reward {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 650;
}

.reward.open { color: var(--main); }
.reward.locked { color: var(--danger); }
.reward.waiting { color: var(--warn); }

.week-grid {
  display: grid;
  gap: 0.75rem;
}

.week {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.75rem;
}

.week h3 {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
}

.days {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0.35rem;
}

.day-cell {
  min-height: var(--touch);
  border-radius: 10px;
  border: 1px solid transparent;
  background: color-mix(in srgb, var(--line) 55%, transparent);
  color: var(--ink);
  font-size: 0.8rem;
  cursor: pointer;
  padding: 0.25rem;
}

.day-cell.counted {
  background: color-mix(in srgb, var(--main) 35%, var(--bg-elev));
}

.day-cell.future {
  opacity: 0.55;
}

.day-cell.today {
  border-color: var(--accent);
  font-weight: 700;
}

.day-cell.phase-1 { background: var(--phase-1); }
.day-cell.phase-2 { background: var(--phase-2); }
.day-cell.phase-3 { background: var(--phase-3); }
.day-cell.phase-4 { background: var(--phase-4); }
.day-cell.counted.phase-1,
.day-cell.counted.phase-2,
.day-cell.counted.phase-3,
.day-cell.counted.phase-4 {
  outline: 2px solid var(--main);
}

.tabbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.15rem;
  padding: 0.35rem 0.35rem calc(0.35rem + env(safe-area-inset-bottom));
  background: color-mix(in srgb, var(--bg-elev) 92%, transparent);
  border-top: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.tab {
  min-height: var(--touch);
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: 10px;
}

.tab.active {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}

.tab:disabled {
  opacity: 0.4;
}

@media (min-width: 860px) {
  body {
    padding-bottom: 0;
    padding-left: 200px;
  }

  .tabbar {
    left: 0;
    right: auto;
    top: 0;
    bottom: 0;
    width: 200px;
    grid-template-columns: 1fr;
    align-content: start;
    padding: 5rem 0.75rem 1rem;
    border-top: 0;
    border-right: 1px solid var(--line);
  }

  .tab {
    text-align: left;
    padding-left: 0.85rem;
  }

  #app {
    max-width: 880px;
  }
}