:root {
  --ink: #25304a;
  --muted: #66708a;
  --paper: rgba(255, 255, 255, 0.94);
  --line: rgba(85, 98, 140, 0.16);
  --primary: #6c5ce7;
  --primary-dark: #5146c8;
  --accent: #ffb703;
  --success: #22b573;
  --danger: #ff5d73;
  --shadow: 0 18px 50px rgba(38, 44, 78, 0.18);
  --radius: 24px;
}

* { box-sizing: border-box; }

html { min-width: 320px; }

body {
  margin: 0 !important;
  padding: 0 !important;
  display: block !important;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Trebuchet MS", "Microsoft YaHei", system-ui, sans-serif !important;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 8% 10%, rgba(255,255,255,.28), transparent 20%),
    radial-gradient(circle at 92% 18%, rgba(255,255,255,.2), transparent 16%),
    linear-gradient(120deg, rgba(255,255,255,.06), transparent 45%);
  z-index: 0;
}

.hub-bar {
  position: sticky;
  top: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: min(1180px, calc(100% - 28px));
  margin: 14px auto 0;
  padding: 10px 12px 10px 18px;
  color: var(--ink);
  background: rgba(255,255,255,.9);
  border: 1px solid rgba(255,255,255,.65);
  border-radius: 18px;
  box-shadow: 0 10px 30px rgba(24, 31, 57, .14);
  backdrop-filter: blur(16px);
}

.hub-brand { display: flex; align-items: center; gap: 10px; font-weight: 900; letter-spacing: .5px; }
.hub-brand-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 11px; color: white; background: linear-gradient(135deg, #6c5ce7, #00b4d8); }
.hub-actions { display: flex; align-items: center; gap: 8px; }
.hub-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 15px;
  border-radius: 12px;
  color: #fff !important;
  background: var(--primary);
  text-decoration: none;
  font-weight: 800;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.hub-link.secondary { color: var(--ink) !important; background: #eef0ff; }
.hub-link:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(71, 60, 180, .22); }

.game-container {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 28px)) !important;
  max-width: 1180px !important;
  min-height: 0 !important;
  margin: 18px auto 34px !important;
  padding: clamp(18px, 3vw, 34px) !important;
  overflow: hidden;
  color: var(--ink) !important;
  background: var(--paper) !important;
  border: 1px solid rgba(255,255,255,.7) !important;
  border-radius: 30px !important;
  box-shadow: var(--shadow) !important;
  backdrop-filter: blur(12px);
}

.game-container h1, .header h1 {
  margin: 0 0 8px !important;
  color: var(--ink) !important;
  font-size: clamp(28px, 4vw, 46px) !important;
  line-height: 1.1 !important;
  text-shadow: none !important;
}

.subtitle { margin-bottom: 22px !important; color: var(--muted) !important; font-size: clamp(14px, 1.6vw, 18px) !important; }

.game-area, .story-container, .practice-area, .typing-area, .keyboard-container {
  border: 1px solid var(--line) !important;
  border-radius: var(--radius) !important;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.65), 0 10px 30px rgba(38,44,78,.08) !important;
}

.stats {
  display: grid !important;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px !important;
  margin: 18px 0 !important;
}

.stat-item, .result-item {
  min-width: 0 !important;
  padding: 14px 10px !important;
  color: var(--ink) !important;
  background: linear-gradient(145deg, #fff, #f4f6ff) !important;
  border: 1px solid var(--line) !important;
  border-radius: 18px !important;
  box-shadow: 0 8px 18px rgba(51, 60, 99, .08) !important;
}

.stat-label, .result-label { color: var(--muted) !important; font-size: 13px !important; }
.stat-value, .result-value { color: var(--primary) !important; font-size: clamp(20px, 2.4vw, 28px) !important; }

.controls { display: flex !important; flex-wrap: wrap; justify-content: center; gap: 12px !important; margin-top: 18px !important; }

button, .difficulty-btn {
  min-height: 48px !important;
  padding: 10px 20px !important;
  border: 0 !important;
  border-radius: 15px !important;
  color: #fff !important;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark)) !important;
  box-shadow: 0 8px 18px rgba(74, 61, 180, .25) !important;
  font-family: inherit !important;
  font-size: 16px !important;
  font-weight: 900 !important;
  cursor: pointer;
  touch-action: manipulation;
  transition: transform .16s ease, box-shadow .16s ease, filter .16s ease !important;
}

button:hover, .difficulty-btn:hover { transform: translateY(-2px) !important; filter: brightness(1.04); }
button:active, .difficulty-btn:active { transform: translateY(1px) scale(.98) !important; }
button:disabled { opacity: .48 !important; transform: none !important; box-shadow: none !important; cursor: not-allowed; }
.difficulty-btn { min-height: 42px !important; padding: 8px 18px !important; color: var(--ink) !important; background: #edf0fa !important; box-shadow: none !important; }
.difficulty-btn.active { color: white !important; background: linear-gradient(135deg, #ff8a5b, #ff5d73) !important; box-shadow: 0 7px 16px rgba(255,93,115,.24) !important; }

input[type="text"], input:not([type]), textarea {
  width: min(100%, 680px) !important;
  min-height: 58px !important;
  padding: 12px 18px !important;
  color: var(--ink) !important;
  background: #fff !important;
  border: 3px solid #dfe3f2 !important;
  border-radius: 17px !important;
  outline: none !important;
  box-shadow: 0 8px 20px rgba(36, 44, 78, .08) !important;
  font-family: inherit !important;
  font-size: clamp(18px, 2.4vw, 25px) !important;
  transition: border-color .18s ease, box-shadow .18s ease !important;
}
input:focus, textarea:focus { border-color: var(--primary) !important; box-shadow: 0 0 0 5px rgba(108,92,231,.14), 0 9px 22px rgba(36,44,78,.1) !important; }

.progress-bar, .progress-container { overflow: hidden; border-radius: 999px !important; background: #e8ebf5 !important; }
.progress { border-radius: 999px !important; background: linear-gradient(90deg, #00c2a8, #72dd78) !important; box-shadow: none !important; transition: width .3s ease !important; }

.level-indicator, .difficulty-selector { display: flex !important; flex-wrap: wrap; align-items: center; justify-content: center; gap: 10px !important; }
.level-dot { border: 3px solid rgba(255,255,255,.85) !important; box-shadow: 0 4px 10px rgba(39,48,80,.16) !important; }
.level-dot.active { transform: scale(1.14); }

.message, .results, .combo-message {
  z-index: 11000 !important;
  color: var(--ink) !important;
  background: rgba(255,255,255,.97) !important;
  border: 1px solid var(--line) !important;
  border-radius: 24px !important;
  box-shadow: 0 24px 70px rgba(24,31,57,.28) !important;
}
.message h2, .results h2 { color: var(--primary) !important; text-shadow: none !important; }

.keyboard { max-width: 900px; margin-inline: auto; }
.key { border-radius: 10px !important; box-shadow: 0 4px 0 rgba(35,43,70,.16) !important; }
.current-sentence, .word-display, .current-word { line-height: 1.55 !important; }

@media (max-width: 820px) {
  .hub-bar { width: min(100% - 18px, 1180px); margin-top: 9px; }
  .game-container { width: min(100% - 18px, 1180px) !important; margin-top: 12px !important; border-radius: 23px !important; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .game-area { min-height: 360px !important; }
  .keyboard-container { overflow-x: auto; }
  .keyboard { min-width: 680px; transform-origin: left top; }
}

@media (min-width: 900px) and (max-height: 820px) {
  .hub-bar {
    width: min(1060px, calc(100% - 22px));
    margin-top: 6px;
    padding: 5px 9px 5px 12px;
    border-radius: 15px;
  }

  .hub-brand-mark { width: 25px; height: 25px; border-radius: 8px; }
  .hub-brand { font-size: 14px; gap: 8px; }
  .hub-link { min-height: 30px; padding: 0 10px; font-size: 13px; border-radius: 10px; }

  .game-container {
    width: min(1060px, calc(100% - 22px)) !important;
    max-width: 1060px !important;
    margin: 8px auto 16px !important;
    padding: 14px 18px !important;
    border-radius: 22px !important;
  }

  .game-container h1, .header h1 {
    margin-bottom: 4px !important;
    font-size: clamp(24px, 2.6vw, 34px) !important;
  }

  .subtitle {
    margin-bottom: 12px !important;
    font-size: 14px !important;
  }

  .stats {
    gap: 6px !important;
    margin: 7px 0 !important;
  }

  .stat-item, .result-item {
    min-height: 46px !important;
    padding: 5px 8px !important;
    border-radius: 14px !important;
  }

  .stat-label, .result-label { font-size: 12px !important; }
  .stat-value, .result-value { font-size: 19px !important; }

  .controls {
    gap: 8px !important;
    margin-top: 10px !important;
  }

  button, .difficulty-btn {
    min-height: 38px !important;
    padding: 7px 14px !important;
    border-radius: 12px !important;
    font-size: 14px !important;
  }

  input[type="text"], input:not([type]), textarea {
    min-height: 44px !important;
    padding: 8px 14px !important;
    border-width: 2px !important;
    border-radius: 13px !important;
    font-size: 18px !important;
  }

  .game-area, .story-container, .practice-area, .typing-area, .keyboard-container {
    border-radius: 18px !important;
  }

  .story-container { max-height: 260px !important; }
  .current-sentence, .word-display, .current-word { line-height: 1.35 !important; }

  .game-area {
    gap: 10px !important;
    margin: 10px 0 !important;
    max-height: none !important;
  }

  .keyboard-container {
    padding: 10px !important;
  }

  .keyboard {
    gap: 5px !important;
    max-width: 760px !important;
  }

  .keyboard-row { gap: 4px !important; }

  .key {
    width: 30px !important;
    height: 30px !important;
    min-height: 30px !important;
    font-size: 13px !important;
    border-radius: 8px !important;
  }

  .practice-area {
    min-height: 120px !important;
    max-height: 220px !important;
    padding: 10px !important;
    overflow: auto !important;
  }

  .target-keys {
    margin: 4px 0 !important;
    font-size: 30px !important;
    letter-spacing: 4px !important;
  }

  .instructions {
    min-height: 34px !important;
    margin-bottom: 8px !important;
    font-size: 14px !important;
  }

  .sentence-display { font-size: 16px !important; }
  .hand-graphic { display: none !important; }
  .hand { width: 72px !important; height: 90px !important; }
  .finger { width: 12px !important; height: 18px !important; }
  .left-hand .finger.ring { left: 18px !important; }
  .left-hand .finger.middle { left: 33px !important; }
  .left-hand .finger.index { left: 48px !important; }
  .left-hand .finger.thumb { left: 55px !important; top: 38px !important; width: 16px !important; height: 13px !important; }
  .right-hand .finger.ring { right: 18px !important; }
  .right-hand .finger.middle { right: 33px !important; }
  .right-hand .finger.index { right: 48px !important; }
  .right-hand .finger.thumb { right: 55px !important; top: 38px !important; width: 16px !important; height: 13px !important; }

  .timer-container { height: auto !important; padding: 8px !important; }
  .timer { font-size: 30px !important; }
  .typing-area {
    min-height: 260px !important;
    padding: 12px !important;
  }

  .word-display {
    min-height: 74px !important;
    padding: 10px !important;
    font-size: 22px !important;
  }

  .feedback, .combo-display { min-height: 24px !important; font-size: 14px !important; }
  .progress-container, .progress-bar { margin: 8px 0 !important; }

  .ship { transform: translateX(-50%) scale(.76) !important; transform-origin: center bottom; }
  .game-area:has(.stars) {
    height: 270px !important;
    min-height: 260px !important;
    max-height: 270px !important;
  }

  .story-panel {
    max-height: 56px !important;
    padding: 8px 12px !important;
    overflow: auto !important;
  }

  .story-text { font-size: 13px !important; line-height: 1.35 !important; }
  .input-container { margin: 8px 0 !important; }
  .level-indicator { margin: 6px 0 !important; }
}

@media (max-width: 520px) {
  .hub-brand span:last-child { display: none; }
  .hub-link { padding-inline: 11px; font-size: 14px; }
  .hub-link.secondary { display: none; }
  .game-container { padding: 16px !important; }
  .controls button { flex: 1 1 130px; }
  .stat-item { padding: 11px 7px !important; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}