:root {
  --bg: #f8f7f5;
  --bg-soft: #f1efe9;
  --card: #ffffff;
  --card-2: #f8f7f5;
  --line: rgba(28,25,23,0.10);
  --ink: #1c1917;
  --ink-2: #57534e;
  --ink-3: #a8a29e;

  --primary: #4f46e5;
  --primary-mid: #6366f1;
  --primary-deep: #3730a3;
  --primary-soft: rgba(79,70,229,0.09);

  --amber: #f59e0b;
  --amber-soft: rgba(245,158,11,0.11);
  --fire: #ef4444;
  --fire-soft: rgba(239,68,68,0.09);
  --good: #10b981;
  --good-soft: rgba(16,185,129,0.09);
  --bad: #f43f5e;
  --bad-soft: rgba(244,63,94,0.09);
  --sky: #0ea5e9;

  /* backward-compat aliases for inline styles in JS views */
  --mint: var(--good);
  --coral: var(--bad);

  --radius: 16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 2px 14px rgba(0,0,0,0.08), 0 1px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.10), 0 2px 8px rgba(0,0,0,0.05);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
  line-height: 1.6;
}
h1,h2,h3,h4,.display { font-family: 'Space Grotesk','Inter',sans-serif; letter-spacing: -0.01em; }

#app { max-width: 760px; margin: 0 auto; padding: 0 16px 96px; }

/* ---------- header ---------- */
header {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 2px 12px; position: sticky; top: 0; z-index: 40;
  background: linear-gradient(var(--bg) 80%, transparent);
}
.logo {
  display: flex; align-items: center; gap: 9px;
  font-family: 'Space Grotesk'; font-weight: 700; font-size: 19px;
  cursor: pointer; user-select: none; color: var(--ink);
}
.logo .dot {
  width: 32px; height: 32px; border-radius: 10px; display: block; flex: none;
  background: #fff url("../assets/loop-ai-tutor-icon-512.png?v=spark-book-20260708") center/cover no-repeat;
  border: 1px solid rgba(79,70,229,0.12);
  box-shadow: 0 2px 8px rgba(79,70,229,0.22);
  overflow: hidden;
}
.logo .dot::before, .loop-mark::before {
  content: none;
}
.hdr-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--card); border: 1px solid var(--line);
  padding: 6px 12px; border-radius: 999px; font-size: 13px; font-weight: 600; color: var(--ink-2);
  white-space: nowrap; box-shadow: var(--shadow-sm);
}
.pill b { color: var(--ink); font-variant-numeric: tabular-nums; }
.iconbtn {
  background: var(--card); border: 1px solid var(--line); color: var(--ink-2);
  width: 36px; height: 36px; border-radius: 999px; cursor: pointer; font-size: 16px;
  box-shadow: var(--shadow-sm); transition: .15s;
}
.iconbtn:hover { color: var(--primary); border-color: rgba(79,70,229,0.3); }
.iconbtn.settings-btn {
  width: auto; min-width: 0; padding: 0 13px; font: 700 12px 'Inter';
}

/* ---------- nav ---------- */
nav.tabs {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 50;
  display: flex; justify-content: center; gap: 2px;
  background: rgba(255,255,255,0.96); backdrop-filter: blur(16px);
  border-top: 1px solid var(--line); padding: 8px 6px calc(8px + env(safe-area-inset-bottom));
  box-shadow: 0 -4px 24px rgba(0,0,0,0.06);
}
nav.tabs button {
  flex: 0 1 128px; background: none; border: 0;
  font: 700 12px 'Inter'; cursor: pointer; padding: 10px 8px; border-radius: 999px;
  display: flex; align-items: center; justify-content: center; color: var(--ink-3);
  transition: .15s; position: relative;
}
nav.tabs button.active { color: var(--primary); background: var(--primary-soft); }
nav.tabs button .badge {
  position: absolute; top: -1px; right: 4px;
  background: var(--bad); color: #fff; font-size: 10px; font-weight: 700;
  min-width: 17px; height: 17px; border-radius: 999px; display: grid; place-items: center; padding: 0 4px;
}

/* ---------- cards & buttons ---------- */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow);
}
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 600 15px 'Inter'; color: #fff;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-mid) 100%);
  border: 0; border-radius: 13px; padding: 13px 22px; cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease;
  box-shadow: 0 2px 10px rgba(79,70,229,0.28);
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(79,70,229,0.40); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: .45; cursor: default; transform: none; box-shadow: none; }
.btn.ghost {
  background: var(--card); color: var(--ink);
  border: 1.5px solid var(--line); box-shadow: var(--shadow-sm);
}
.btn.ghost:hover { box-shadow: var(--shadow); border-color: rgba(79,70,229,0.35); color: var(--primary); }
.btn.warn {
  background: linear-gradient(135deg, var(--bad), #fb7185); color: #fff;
  box-shadow: 0 2px 10px rgba(244,63,94,0.28);
}
.btn.warn:hover { box-shadow: 0 6px 20px rgba(244,63,94,0.40); }
.btn.small { padding: 9px 16px; font-size: 13.5px; border-radius: 10px; }
.btn.block { width: 100%; }

.chip {
  display: inline-flex; align-items: center; gap: 6px; cursor: pointer; user-select: none;
  background: var(--card-2); border: 1.5px solid var(--line); color: var(--ink-2);
  border-radius: 999px; padding: 7px 14px; font-size: 13.5px; font-weight: 500; transition: .12s;
}
.chip:hover { border-color: rgba(79,70,229,0.4); color: var(--primary); }
.chip.on { background: var(--primary-soft); border-color: var(--primary); color: var(--primary); font-weight: 600; }
button.chip { font-family: inherit; }

.choice-row { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; margin: 2px 0 6px; }
.chip.choice { border-color: var(--primary); color: var(--primary); background: transparent; font-weight: 600; }
.chip.choice:hover { background: var(--primary); color: #fff; }

input[type=text], input[type=password], textarea, select {
  width: 100%; background: var(--bg-soft); color: var(--ink);
  border: 1.5px solid var(--line); border-radius: 12px; padding: 12px 14px;
  font: 500 15px 'Inter'; outline: none; transition: border-color .15s, box-shadow .15s;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,0.12);
  background: #fff;
}
label.lbl { display: block; font-size: 11.5px; font-weight: 700; color: var(--ink-3); margin: 14px 0 6px; text-transform: uppercase; letter-spacing: .07em; }

.muted { color: var(--ink-2); }
.tiny { font-size: 12.5px; color: var(--ink-2); }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spread { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.stack > * + * { margin-top: 16px; }
section.view { display: none; padding-top: 6px; }
section.view.active { display: block; animation: rise .28s ease; }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* ---------- dashboard ---------- */
.home { padding-top: 2px; }
.home-hero-panel {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 18px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow-sm);
}
.home-hero-panel h1 {
  font-size: 30px; line-height: 1.1; margin-top: 2px;
}
.home-hero-panel p:not(.eyebrow) {
  color: var(--ink-2); font-size: 14px; line-height: 1.55; margin-top: 8px; max-width: 540px;
}
.eyebrow {
  color: var(--primary); font-size: 11px; font-weight: 800; letter-spacing: .08em;
  text-transform: uppercase;
}
.status-pill {
  border: 1px solid rgba(16,185,129,0.24); background: var(--good-soft); color: #047857;
  border-radius: 999px; padding: 6px 10px; font-size: 12px; font-weight: 800; white-space: nowrap;
}
.focus-panel {
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-mid) 100%);
  color: #fff; border-radius: var(--radius); padding: 22px; box-shadow: 0 5px 22px rgba(79,70,229,0.30);
}
.focus-panel .eyebrow { color: rgba(255,255,255,0.75); }
.focus-panel h2 { font-size: 24px; line-height: 1.15; margin-top: 4px; color: #fff; }
.focus-panel p { color: rgba(255,255,255,0.82); font-size: 14px; line-height: 1.45; margin-top: 6px; max-width: 520px; }
.plan-count {
  flex: none; width: 78px; height: 78px; border-radius: 16px;
  display: grid; place-items: center; align-content: center;
  background: rgba(255,255,255,0.13); border: 1px solid rgba(255,255,255,0.24);
}
.plan-count b { font: 800 28px 'Space Grotesk'; line-height: 1; color: #fff; }
.plan-count span { font-size: 11px; color: rgba(255,255,255,0.78); margin-top: 3px; }
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.stat {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 14px; display: flex; flex-direction: column; gap: 3px;
  box-shadow: var(--shadow-sm); position: relative; overflow: hidden;
}
.stat::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--stat-accent, var(--primary));
}
.stat.fire  { --stat-accent: var(--fire); }
.stat.amber { --stat-accent: var(--amber); }
.stat.good  { --stat-accent: var(--good); }
.stat .k { font-size: 11px; font-weight: 700; color: var(--ink-3); text-transform: uppercase; letter-spacing: .06em; }
.stat .v { font-family: 'Space Grotesk'; font-size: 24px; font-weight: 700; font-variant-numeric: tabular-nums; margin-top: 2px; }
.stat .s { font-size: 11px; color: var(--ink-2); }

.hero-cta {
  display: flex; align-items: center; gap: 16px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-mid) 100%);
  border: 0; border-radius: var(--radius);
  padding: 18px 20px; cursor: pointer; transition: transform .15s, box-shadow .15s;
  box-shadow: 0 4px 20px rgba(79,70,229,0.32); color: #fff;
}
.hero-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(79,70,229,0.45); }
.hero-cta .big { font-size: 32px; }
.hero-cta b { font-family: 'Space Grotesk'; font-size: 17px; display: block; color: #fff; }
.hero-cta .tiny { color: rgba(255,255,255,0.8); font-size: 13px; margin-top: 2px; }

/* ---------- daily plan ---------- */
.daily-plan { display: flex; flex-direction: column; gap: 8px; }
.daily-step {
  width: 100%; border: 0; text-align: left; font: inherit; color: inherit;
  display: flex; align-items: center; gap: 14px; border-radius: 16px;
  padding: 14px 16px; cursor: pointer; transition: transform .12s, box-shadow .12s;
}
.daily-step .step-index {
  width: 26px; height: 26px; border-radius: 999px; flex: none;
  display: grid; place-items: center; font-size: 13px; font-weight: 700;
  border: 1.5px solid var(--line); color: var(--ink-2); background: #fff;
}
.daily-step .body { flex: 1; min-width: 0; }
.daily-step .body b { font-family: 'Space Grotesk'; font-size: 15px; display: block; }
.daily-step .body .tiny { margin-top: 2px; }
.daily-step .step-status {
  flex: none; border-radius: 999px; padding: 4px 9px; font-size: 11px; font-weight: 800;
  color: var(--ink-3); background: var(--card-2); border: 1px solid var(--line);
}

.daily-step.primary {
  background: var(--card); color: var(--ink); box-shadow: var(--shadow);
  border: 1.5px solid rgba(79,70,229,0.28);
}
.daily-step.primary:hover { transform: translateY(-1px); box-shadow: var(--shadow-lg); }
.daily-step.primary .step-index { background: var(--primary); border-color: var(--primary); color: #fff; }
.daily-step.primary .step-status { background: var(--primary-soft); border-color: rgba(79,70,229,0.18); color: var(--primary); }

.daily-step.pending {
  background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow-sm);
}
.daily-step.pending:hover { border-color: rgba(79,70,229,0.35); }

.daily-step.done {
  background: var(--card-2); border: 1px solid var(--line); opacity: .68; cursor: pointer;
}
.daily-step.done .step-index { background: var(--good); border-color: var(--good); color: #fff; }
.daily-step.done .body b { text-decoration: line-through; color: var(--ink-2); font-weight: 500; }
.daily-step.done .step-status { display: none; }

.daily-done {
  display: flex; align-items: center; gap: 14px; text-align: left;
}
.daily-done .done-mark {
  width: 34px; height: 34px; border-radius: 999px; display: grid; place-items: center;
  background: var(--good); color: #fff; font-weight: 800; flex: none;
}
.daily-done b { font-family: 'Space Grotesk'; font-size: 16px; display: block; }

/* activity chart */
.chart7 { display: flex; align-items: flex-end; gap: 8px; height: 92px; padding-top: 8px; }
.chart7 .col { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; height: 100%; justify-content: flex-end; position: relative; }
.chart7 .bar {
  width: 100%; max-width: 34px; border-radius: 6px 6px 0 0;
  background: var(--primary-soft); border: 1.5px solid rgba(79,70,229,0.15);
  min-height: 4px; transition: .2s;
}
.chart7 .col.today .bar {
  background: linear-gradient(180deg, var(--primary-mid), var(--primary));
  border-color: var(--primary); box-shadow: 0 4px 12px rgba(79,70,229,0.25);
}
.chart7 .col:hover .bar { filter: brightness(1.12); }
.chart7 .d { font-size: 10.5px; color: var(--ink-3); font-weight: 600; }
.chart7 .tip {
  position: absolute; bottom: calc(100% + 4px); left: 50%; transform: translateX(-50%);
  background: var(--ink); color: #fff;
  font-size: 11px; font-weight: 600; padding: 4px 8px; border-radius: 7px; white-space: nowrap;
  opacity: 0; pointer-events: none; transition: .12s; z-index: 5;
}
.chart7 .col:hover .tip { opacity: 1; }

.badges-row { display: flex; gap: 10px; flex-wrap: wrap; }
.badge-tile {
  text-align: center; width: 74px; padding: 12px 4px 10px; border-radius: 14px;
  background: var(--card-2); border: 1.5px solid var(--line); transition: .15s;
}
.badge-tile:not(.locked) {
  border-color: rgba(245,158,11,0.45); background: var(--amber-soft);
  box-shadow: 0 2px 10px rgba(245,158,11,0.18);
}
.badge-tile.locked { opacity: .28; filter: grayscale(1); }
.badge-tile .badge-state { font-size: 10px; text-transform: uppercase; letter-spacing: .06em; font-weight: 800; color: var(--ink-3); }
.badge-tile:not(.locked) .badge-state { color: #92400e; }
.badge-tile .n { font-size: 10px; font-weight: 600; color: var(--ink-2); margin-top: 5px; line-height: 1.25; }

/* ---------- chat ---------- */
.chatlog { display: flex; flex-direction: column; gap: 14px; min-height: 200px; padding: 4px 0 12px; }
.msg { max-width: 88%; padding: 13px 16px; border-radius: 18px; font-size: 14.5px; white-space: pre-wrap; word-wrap: break-word; line-height: 1.65; }
.msg.user {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-mid) 100%);
  color: #fff; border-bottom-right-radius: 5px;
  box-shadow: 0 2px 10px rgba(79,70,229,0.25);
}
.msg.bot {
  align-self: flex-start; background: var(--card);
  border: 1px solid var(--line); border-bottom-left-radius: 5px; box-shadow: var(--shadow-sm);
}
.msg.bot .cursor { display: inline-block; width: 8px; height: 15px; background: var(--primary); border-radius: 2px; animation: blink 1s infinite; vertical-align: text-bottom; }
@keyframes blink { 50% { opacity: .15; } }
.msg.bot b { color: var(--primary-deep); }
.msg.bot code { background: var(--primary-soft); border-radius: 5px; padding: 1px 5px; font-size: 13px; color: var(--primary-deep); }
.quick-row { display: flex; gap: 8px; flex-wrap: wrap; overflow-x: visible; padding: 4px 0 10px; scrollbar-width: none; }
.quick-row::-webkit-scrollbar { display: none; }
.quick-row .chip { flex: none; }
.action-chip { padding-left: 8px; }
.chip-icon {
  width: 18px; height: 18px; border-radius: 999px; display: grid; place-items: center;
  background: var(--primary-soft); color: var(--primary); font-size: 11px; font-weight: 800;
  line-height: 1;
}
.composer { display: flex; gap: 8px; align-items: flex-end; position: sticky; bottom: 76px; background: var(--bg); padding-top: 8px; }
.composer textarea { resize: none; height: 52px; max-height: 130px; }
.savecards {
  background: var(--amber-soft); border: 1.5px dashed rgba(245,158,11,0.5);
  border-radius: 12px; padding: 10px 14px; font-size: 13.5px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
}

/* ---------- quiz ---------- */
.q-option {
  display: block; width: 100%; text-align: left; cursor: pointer;
  background: var(--card-2); border: 1.5px solid var(--line); color: var(--ink);
  border-radius: 13px; padding: 14px 16px; font: 500 14.5px 'Inter'; margin-top: 10px;
  transition: .12s; box-shadow: var(--shadow-sm);
}
.q-option:hover:not(:disabled) { border-color: rgba(79,70,229,0.45); background: var(--primary-soft); }
.q-option.correct { border-color: var(--good); background: var(--good-soft); }
.q-option.wrong { border-color: var(--bad); background: var(--bad-soft); }
.q-option:disabled { cursor: default; }
.progressbar { height: 8px; background: var(--bg-soft); border-radius: 99px; overflow: hidden; border: 1px solid var(--line); }
.progressbar > div { height: 100%; background: linear-gradient(90deg, var(--primary), var(--primary-mid)); border-radius: 99px; transition: width .35s ease; }
.explain { background: rgba(14,165,233,0.08); border-left: 3px solid var(--sky); padding: 11px 14px; border-radius: 0 10px 10px 0; font-size: 13.5px; color: var(--ink-2); margin-top: 12px; }

/* ---------- review / flashcard ---------- */
.flashcard { perspective: 1200px; cursor: pointer; min-height: 240px; }
.fc-inner { position: relative; width: 100%; min-height: 240px; transition: transform .45s; transform-style: preserve-3d; }
.flashcard.flipped .fc-inner { transform: rotateY(180deg); }
.fc-face {
  position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px;
  background: var(--card); border: 1.5px solid var(--line);
  border-radius: var(--radius); padding: 28px; text-align: center; box-shadow: var(--shadow);
}
.fc-face.back {
  transform: rotateY(180deg); border-color: rgba(79,70,229,0.3);
  background: linear-gradient(160deg, #fff 0%, rgba(79,70,229,0.04) 100%);
}
.fc-face .t { font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); font-weight: 700; }
.fc-face .content { font-size: 18px; font-weight: 600; font-family: 'Space Grotesk'; color: var(--ink); }
.grade-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 14px; }
.grade-row button {
  border: 1.5px solid var(--line); background: var(--card); color: var(--ink);
  border-radius: 12px; padding: 12px 4px; cursor: pointer; font: 600 13px 'Inter';
  box-shadow: var(--shadow-sm); transition: .12s;
}
.grade-row button span { display: block; font-size: 10.5px; color: var(--ink-3); font-weight: 500; margin-top: 3px; }
.grade-row button:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); }
.grade-row button.g-again:hover { border-color: var(--bad); color: var(--bad); background: var(--bad-soft); }

/* ---------- paths ---------- */
.milestone { display: flex; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.milestone:last-child { border-bottom: 0; }
.m-check {
  width: 28px; height: 28px; border-radius: 999px; border: 2px solid var(--line); flex: none;
  cursor: pointer; display: grid; place-items: center; font-size: 14px; margin-top: 2px;
  transition: .15s; background: none; color: var(--ink);
}
.m-check:hover { border-color: var(--primary); color: var(--primary); }
.m-check.done { background: var(--good); border-color: var(--good); color: #fff; }
.topic-link { color: var(--primary); cursor: pointer; text-decoration: underline dotted; }

/* ---------- onboarding ---------- */
.ob-wrap { max-width: 480px; margin: 5vh auto 0; }
.ob-hero {
  text-align: center; padding: 36px 24px 30px;
  background: linear-gradient(150deg, var(--primary) 0%, #7c3aed 100%);
  border-radius: var(--radius); color: #fff; margin-bottom: 20px;
  box-shadow: 0 8px 32px rgba(79,70,229,0.35);
}
.ob-hero .brain { font-size: 60px; display: block; margin-bottom: 10px; filter: drop-shadow(0 4px 14px rgba(0,0,0,0.28)); }
.ob-hero h1 { font-size: 34px; font-weight: 800; }
.ob-hero p { color: rgba(255,255,255,0.82); margin-top: 8px; font-size: 15px; line-height: 1.55; }
.loop-mark {
  width: 64px; height: 64px; border-radius: 18px; display: block;
  background: #fff url("../assets/loop-ai-tutor-icon-512.png?v=spark-book-20260708") center/cover no-repeat;
  border: 1px solid rgba(255,255,255,0.42);
  box-shadow: 0 8px 24px rgba(0,0,0,0.18);
  overflow: hidden;
  margin: 0 auto 12px;
}
.loop-mark.large::before { content: none; }
.steps-dots { display: flex; gap: 7px; justify-content: center; margin: 20px 0 6px; }
.steps-dots i { width: 8px; height: 8px; border-radius: 99px; background: var(--line); transition: .25s; }
.steps-dots i.on { background: var(--primary); width: 22px; }

/* ---------- toast & modal ---------- */
#toasts { position: fixed; top: 14px; left: 50%; transform: translateX(-50%); z-index: 100; display: flex; flex-direction: column; gap: 8px; align-items: center; width: min(92vw, 420px); }
.toast {
  background: var(--ink); color: #fff;
  border-radius: 12px; padding: 11px 18px; font-size: 14px; font-weight: 600;
  box-shadow: var(--shadow-lg); animation: rise .2s ease;
}
.toast.xp { background: linear-gradient(135deg, #78350f, #92400e); border: 1px solid rgba(245,158,11,0.4); }
dialog {
  background: var(--card); color: var(--ink); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px; max-width: min(92vw, 460px); width: 100%;
  margin: auto; box-shadow: var(--shadow-lg);
}
dialog::backdrop { background: rgba(0,0,0,0.35); backdrop-filter: blur(5px); }

.spin { display: inline-block; width: 16px; height: 16px; border: 2px solid var(--line); border-top-color: var(--primary); border-radius: 99px; animation: spn .7s linear infinite; }
@keyframes spn { to { transform: rotate(360deg); } }
.demo-tag { background: var(--amber-soft); color: #92400e; border: 1px solid rgba(245,158,11,0.4); font-size: 11px; font-weight: 700; padding: 3px 9px; border-radius: 999px; letter-spacing: .04em; }

.burst { position: fixed; pointer-events: none; z-index: 200; font-size: 22px; animation: burst 1s ease-out forwards; }
@keyframes burst { 0% { opacity: 1; transform: translateY(0) scale(.6); } 100% { opacity: 0; transform: translateY(-90px) scale(1.4); } }

@media (max-width: 560px) {
  .stat .v { font-size: 20px; }
  #app { padding-bottom: 92px; }
  header { gap: 8px; }
  .logo { font-size: 16px; gap: 7px; }
  .logo .dot { width: 28px; height: 28px; border-radius: 9px; }
  .pill { display: none; }
  .settings-btn { height: 32px; padding: 0 10px; }
  .home-hero-panel, .focus-panel { flex-direction: column; align-items: stretch; padding: 18px; }
  .home-hero-panel h1 { font-size: 26px; }
  .status-pill { align-self: flex-start; }
  .plan-count { width: 100%; height: auto; padding: 10px; display: flex; justify-content: space-between; }
  .stat-grid { grid-template-columns: 1fr; }
  .daily-step { align-items: flex-start; }
  .daily-step .step-status { display: none; }
  .ob-hero { padding: 28px 18px 22px; }
  .ob-hero h1 { font-size: 28px; }
}