:root {
  color-scheme: light;
  --bg: #f5f7f8;
  --card: #ffffff;
  --text: #16181d;
  --muted: #6b7280;
  --border: #e6e8eb;
  --primary: #10b981;
  --primary-dark: #059669;
  --blue: #3b82f6;
  --purple: #8b5cf6;
  --orange: #f59e0b;
  --pink: #ec4899;
  --red: #ef4444;
  --rose: #e11d48;
  --cyan: #0891b2;
  --teal: #0d9488;
  --indigo: #4338ca;
  --radius: 14px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}
#app { max-width: 1080px; margin: 0 auto; padding: 20px 20px 60px; }

/* ---------- Auth screen ---------- */
.auth-wrap { max-width: 380px; margin: 12vh auto 0; padding: 0 20px; }
.auth-wrap h1 { text-align: center; font-size: 22px; margin-bottom: 4px; }
.auth-wrap p.tagline { text-align: center; color: var(--muted); font-size: 13px; margin-top: 0; margin-bottom: 24px; }
.auth-tabs { display: flex; gap: 6px; margin-bottom: 16px; justify-content: center; }
.auth-tabs button { border: 1px solid var(--border); background: #fff; padding: 7px 16px; border-radius: 20px; font-size: 13px; cursor: pointer; color: var(--muted); font-weight: 600; }
.auth-tabs button.active { background: var(--text); color: #fff; border-color: var(--text); }
.auth-error { background: #fee2e2; color: var(--red); padding: 8px 12px; border-radius: 8px; font-size: 13px; margin-bottom: 10px; }
.auth-loading { text-align: center; color: var(--muted); font-size: 14px; margin-top: 20vh; }

header.top {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 14px; flex-wrap: wrap; gap: 10px;
}
header.top h1 { font-size: 22px; margin: 0; display:flex; align-items:center; gap:8px; }
header.top .date { color: var(--muted); font-size: 14px; }

.quicklog-bar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; align-items: center; }
details.qd { position: relative; }
details.qd summary {
  list-style: none; cursor: pointer; border: 1px solid var(--border); background: #fff;
  padding: 8px 14px; border-radius: 20px; font-size: 13px; font-weight: 600; color: var(--text);
  display: flex; align-items: center; gap: 6px; user-select: none;
}
details.qd summary::-webkit-details-marker { display: none; }
details.qd summary::after { content: '▾'; font-size: 10px; color: var(--muted); }
details.qd[open] summary { border-color: var(--primary); color: var(--primary-dark); background: #ecfdf5; }
.qd-menu {
  position: absolute; top: calc(100% + 6px); left: 0; background: #fff; border: 1px solid var(--border);
  border-radius: 10px; box-shadow: 0 8px 24px rgba(0,0,0,.1); padding: 6px; min-width: 230px; z-index: 40;
  display: flex; flex-direction: column; gap: 2px; max-height: 320px; overflow-y: auto;
}
.qd-menu button {
  text-align: left; border: none; background: transparent; padding: 8px 10px; border-radius: 6px;
  font-size: 13px; cursor: pointer; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.qd-menu button:hover { background: #f0f1f3; }
.qd-menu .qd-divider { height: 1px; background: var(--border); margin: 4px 2px; }
.qd-menu .qd-empty { padding: 8px 10px; font-size: 12px; color: var(--muted); }

.scan-btn {
  border: 1px solid var(--primary); background: #ecfdf5; color: var(--primary-dark);
  padding: 8px 14px; border-radius: 20px; font-size: 13px; font-weight: 700; cursor: pointer;
  display: flex; align-items: center; gap: 6px;
}
.scan-btn:hover { background: #d1fae5; }
.scan-btn[disabled] { opacity: .6; cursor: wait; }

nav.tabs {
  display: flex; gap: 6px; overflow-x: auto; padding-bottom: 4px; margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
nav.tabs button {
  border: none; background: transparent; padding: 10px 14px; font-size: 14px;
  color: var(--muted); cursor: pointer; border-radius: 10px 10px 0 0; white-space: nowrap;
  font-weight: 500; position: relative; top: 1px;
}
nav.tabs button.active { color: var(--primary-dark); border-bottom: 2px solid var(--primary); background: #ecfdf5; }
nav.tabs button:hover:not(.active) { background: #f0f1f3; }

.grid { display: grid; gap: 14px; }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 820px) {
  .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .grid.cols-3 { grid-template-columns: repeat(2, 1fr); }
  .grid.cols-2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px;
}
.card h3 { margin: 0 0 10px; font-size: 14px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
.stat-card .value { font-size: 26px; font-weight: 700; margin: 2px 0; }
.stat-card .sub { font-size: 12px; color: var(--muted); }
.stat-card .bar-track { height: 6px; background: #eef0f2; border-radius: 4px; margin-top: 8px; overflow: hidden; }
.stat-card .bar-fill { height: 100%; border-radius: 4px; }

.section-title { font-size: 16px; font-weight: 700; margin: 26px 0 12px; }
.section-title:first-child { margin-top: 0; }

.chart-wrap { position: relative; height: 220px; }

form.log-form { display: grid; gap: 12px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; }
.field { display: flex; flex-direction: column; gap: 4px; flex: 1; min-width: 120px; }
.field label { font-size: 12px; color: var(--muted); font-weight: 600; }
input, select, textarea {
  padding: 9px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px;
  font-family: inherit; background: #fff; color: var(--text);
}
textarea { resize: vertical; min-height: 50px; }
button.btn {
  border: none; padding: 10px 16px; border-radius: 8px; font-size: 14px; font-weight: 600;
  cursor: pointer; background: var(--primary); color: #fff;
}
button.btn:hover { background: var(--primary-dark); }
button.btn.secondary { background: #eef0f2; color: var(--text); }
button.btn.secondary:hover { background: #e2e5e8; }
button.btn.danger { background: #fee2e2; color: var(--red); }
button.btn.danger:hover { background: #fecaca; }
button.btn.small { padding: 6px 10px; font-size: 12px; }
button.btn[disabled] { opacity: .6; cursor: wait; }
button.icon-btn { border: none; background: transparent; cursor: pointer; color: var(--muted); font-size: 15px; padding: 4px 8px; }
button.icon-btn:hover { color: var(--red); }
button.icon-btn.copy:hover { color: var(--primary-dark); }

.subtabs { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.subtabs button { border: 1px solid var(--border); background: #fff; padding: 7px 13px; border-radius: 20px; font-size: 13px; cursor: pointer; color: var(--muted); font-weight: 600; }
.subtabs button.active { background: var(--text); color: #fff; border-color: var(--text); }

.exercise-block { border: 1px solid var(--border); border-radius: 10px; padding: 10px; margin-bottom: 8px; background: #fafbfc; }
.set-row { display: flex; gap: 8px; align-items: center; margin-bottom: 6px; }
.set-row span { font-size: 12px; color: var(--muted); width: 46px; }
.metric-row { display: flex; gap: 8px; align-items: center; margin-bottom: 6px; }

table.simple { width: 100%; border-collapse: collapse; font-size: 13px; }
table.simple th, table.simple td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); }
table.simple th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }

.habit-row { display: flex; align-items: center; justify-content: space-between; padding: 10px 4px; border-bottom: 1px solid var(--border); }
.habit-row:last-child { border-bottom: none; }
.habit-left { display: flex; align-items: center; gap: 10px; }
.checkbox-btn { width: 26px; height: 26px; border-radius: 8px; border: 2px solid var(--border); background: #fff; cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 14px; color: #fff; }
.checkbox-btn.done { background: var(--primary); border-color: var(--primary); }
.streak-pill { font-size: 12px; background: #fff7ed; color: var(--orange); padding: 3px 9px; border-radius: 20px; font-weight: 600; }

.empty { color: var(--muted); font-size: 13px; padding: 20px 0; text-align: center; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 20px; font-size: 11px; font-weight: 700; }
.badge.gym { background: #ecfdf5; color: var(--primary-dark); }
.badge.running { background: #eff6ff; color: var(--blue); }
.badge.cardio { background: #fff1f2; color: var(--rose); }
.badge.swimming { background: #ecfeff; color: var(--cyan); }
.badge.meal { background: #fff7ed; color: var(--orange); }
.badge.water { background: #eff6ff; color: var(--blue); }
.badge.sleep { background: #f5f3ff; color: var(--purple); }
.badge.testing { background: #fdf2f8; color: var(--pink); }
.badge.recovery { background: #f0fdfa; color: var(--teal); }
.badge.steps { background: #eef2ff; color: var(--indigo); }

.filter-bar { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; align-items: center; }
.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: #fff; padding: 10px 18px; border-radius: 8px; font-size: 13px;
  opacity: 0; pointer-events: none; transition: opacity .25s; z-index: 50; max-width: 90vw; text-align: center;
}
.toast.show { opacity: 1; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 700px) { .two-col { grid-template-columns: 1fr; } }