:root {
  --bg: #07111f;
  --panel: rgba(13, 24, 42, 0.74);
  --panel-strong: rgba(17, 32, 55, 0.92);
  --line: rgba(255, 255, 255, 0.10);
  --text: #f8fafc;
  --muted: #9aa8ba;
  --accent: #22c55e;
  --accent-2: #38bdf8;
  --danger: #fb7185;
  --warn: #facc15;
  --radius: 18px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.34);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html { min-height: 100%; background: var(--bg); }

body {
  margin: 0;
  min-height: 100dvh;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 8%, rgba(34, 197, 94, 0.22), transparent 32%),
    radial-gradient(circle at 88% 18%, rgba(56, 189, 248, 0.18), transparent 30%),
    linear-gradient(155deg, #06101d 0%, #081522 48%, #020617 100%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  overflow-x: hidden;
}

button, input, select { font: inherit; }

.ambient { position: fixed; inset: 0; overflow: hidden; pointer-events: none; z-index: -1; }
.ambient span {
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: 999px;
  filter: blur(50px);
  opacity: .34;
  animation: float 10s ease-in-out infinite alternate;
}
.ambient span:nth-child(1) { background: #22c55e; left: -50px; top: 90px; }
.ambient span:nth-child(2) { background: #38bdf8; right: -70px; top: 170px; animation-delay: -4s; }
.ambient span:nth-child(3) { background: #a78bfa; left: 42%; bottom: -80px; animation-delay: -7s; }
@keyframes float { from { transform: translate3d(0,0,0) scale(.95); } to { transform: translate3d(24px,-26px,0) scale(1.08); } }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: calc(12px + env(safe-area-inset-top)) 16px 12px;
  background: rgba(3, 10, 20, 0.72);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(22px);
}

.topbar h1 { margin: 2px 0 0; font-size: clamp(1.2rem, 5vw, 1.8rem); letter-spacing: 0; }
.eyebrow { margin: 0; color: var(--accent); font-size: .76rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.muted { color: var(--muted); margin: 6px 0 0; line-height: 1.55; }

main {
  width: min(960px, 100%);
  margin: 0 auto;
  padding: 14px 14px calc(92px + env(safe-area-inset-bottom));
}

.view { display: none; animation: fade .22s ease; }
.view.active { display: block; }
@keyframes fade { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: none; } }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
  padding: 16px;
  margin-bottom: 12px;
}

.hero h2, .card h2 { margin: 0; font-size: clamp(1.18rem, 5vw, 1.7rem); letter-spacing: 0; }
.hero { display: grid; gap: 16px; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.stat-grid div, .score-grid .mini {
  min-width: 0;
  border-radius: 14px;
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--line);
  padding: 12px 10px;
  text-align: center;
}
.stat-grid strong, .score-grid strong { display: block; font-size: 1.35rem; color: var(--accent); }
.stat-grid span, .score-grid span { color: var(--muted); font-size: .78rem; }

.quick-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}
.quick-card {
  min-height: 88px;
  text-align: left;
  color: var(--text);
  background: linear-gradient(145deg, rgba(34,197,94,.18), rgba(56,189,248,.10));
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
}
.quick-card span, .resource-card span, .pill {
  display: inline-flex;
  color: #08111f;
  background: var(--accent);
  padding: 4px 8px;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 900;
}
.quick-card strong { display: block; margin-top: 10px; font-size: 1rem; }

.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.de-block {
  margin: 0;
  line-height: 1.7;
  font-size: 1rem;
  color: #e8eef7;
}
.number-line { margin: 4px 0 0; font-size: 2rem; color: var(--accent-2); font-weight: 900; }

.icon-btn, .tiny-btn, .primary-btn, .secondary-btn {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 13px;
  color: var(--text);
  background: rgba(255,255,255,.08);
  padding: 9px 12px;
  font-weight: 800;
}
.tiny-btn { min-height: 34px; padding: 6px 10px; }
.primary-btn { background: linear-gradient(135deg, #22c55e, #14b8a6); color: #03110b; border-color: rgba(255,255,255,.16); }
.secondary-btn { background: rgba(255,255,255,.08); }

.sticky-tools {
  position: sticky;
  top: calc(74px + env(safe-area-inset-top));
  z-index: 10;
}
.searchbox span { display: block; color: var(--muted); font-weight: 800; font-size: .78rem; margin-bottom: 6px; }
input, select {
  width: 100%;
  color: var(--text);
  background: rgba(2, 6, 23, .72);
  border: 1px solid var(--line);
  border-radius: 13px;
  min-height: 46px;
  padding: 0 12px;
  outline: none;
}
input:focus, select:focus { border-color: rgba(34,197,94,.66); box-shadow: 0 0 0 3px rgba(34,197,94,.12); }

.segmented {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-top: 10px;
}
.segmented button {
  min-width: 0;
  color: var(--muted);
  background: rgba(255,255,255,.05);
  border: 1px solid var(--line);
  border-radius: 12px;
  min-height: 38px;
  font-weight: 800;
}
.segmented button.active { color: #021008; background: var(--accent); }
.filter-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 10px; }

.result-info { color: var(--muted); font-size: .82rem; margin: 8px 4px 10px; }
.list { display: grid; gap: 10px; }

.entry-card {
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--panel-strong);
  padding: 14px;
}
.entry-top { display: flex; justify-content: space-between; gap: 10px; align-items: flex-start; }
.entry-title { margin: 0; font-size: 1.06rem; line-height: 1.35; }
.entry-sub { color: var(--muted); margin: 5px 0 0; line-height: 1.5; }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.tag { border-radius: 999px; background: rgba(56,189,248,.12); color: #bae6fd; border: 1px solid rgba(56,189,248,.22); padding: 4px 8px; font-size: .72rem; font-weight: 800; }
.verb-table { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px; margin-top: 12px; }
.verb-table div { background: rgba(255,255,255,.05); border-radius: 10px; padding: 8px; color: #dbeafe; }
.verb-table b { color: var(--accent); }

.game-filters { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.game-filters label { display: inline-flex; gap: 7px; align-items: center; color: var(--muted); background: rgba(255,255,255,.06); border: 1px solid var(--line); border-radius: 999px; padding: 8px 10px; }
.game-filters input { width: auto; min-height: auto; }
.timer {
  min-width: 48px;
  text-align: center;
  border-radius: 999px;
  color: #020617;
  background: var(--warn);
  padding: 9px 12px;
  font-weight: 900;
}
.quiz-card h2 { line-height: 1.35; word-break: break-word; }
.choices { display: grid; gap: 9px; margin: 16px 0; }
.choice {
  width: 100%;
  text-align: left;
  min-height: 52px;
  border-radius: 14px;
  padding: 12px;
  color: var(--text);
  background: rgba(255,255,255,.07);
  border: 1px solid var(--line);
}
.choice.correct { background: rgba(34,197,94,.22); border-color: rgba(34,197,94,.75); }
.choice.wrong { background: rgba(251,113,133,.18); border-color: rgba(251,113,133,.7); }
.game-actions { display: grid; grid-template-columns: 1fr 96px; gap: 10px; }
.score-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }

.phrase-stack { display: grid; gap: 8px; }
.phrase-stack div, .number-logic div {
  border-radius: 13px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.05);
  padding: 12px;
  line-height: 1.45;
}

.resource-grid { display: grid; gap: 10px; margin-bottom: 12px; }
.resource-card {
  text-decoration: none;
  color: var(--text);
  display: block;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(34,197,94,.16), rgba(167,139,250,.10));
  padding: 16px;
}
.resource-card strong { display: block; margin-top: 10px; }
.resource-card small { display: block; color: var(--muted); margin-top: 4px; }

.bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 4px;
  padding: 8px 8px calc(8px + env(safe-area-inset-bottom));
  background: rgba(3, 10, 20, 0.86);
  border-top: 1px solid var(--line);
  backdrop-filter: blur(22px);
}
.bottom-nav button {
  min-width: 0;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 14px;
  min-height: 52px;
  font-size: .74rem;
  font-weight: 800;
}
.bottom-nav button span { display: block; font-size: 1.15rem; line-height: 1; margin-bottom: 3px; }
.bottom-nav button.active { color: #021008; background: var(--accent); }

@media (min-width: 720px) {
  main { padding-left: 22px; padding-right: 22px; }
  .hero { grid-template-columns: 1.5fr 1fr; align-items: center; }
  .quick-grid, .resource-grid { grid-template-columns: repeat(4, 1fr); }
  .list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .choices { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 360px) {
  .segmented { grid-template-columns: repeat(2, 1fr); }
  .filter-row, .game-actions { grid-template-columns: 1fr; }
  .bottom-nav button { font-size: .68rem; }
}