:root {
  --bg: #f7f9fc;
  --surface: #ffffff;
  --surface2: #e8edf4;
  --border: #d2dbe6;
  --text: #2c3e50;
  --text-dim: #8899aa;
  --green: #6aaa64;
  --green-glow: rgba(106, 170, 100, 0.15);
  --yellow: #c9b458;
  --yellow-glow: rgba(201, 180, 88, 0.15);
  --gray: #787c7e;
  --gray-light: #a4aeb4;
  --accent: #6b8cae;
  --accent-glow: rgba(107, 140, 174, 0.15);
  --danger: #d9534f;
  --tile-empty: #dce3ea;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Sora', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: radial-gradient(circle, rgba(107,140,174,0.07) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none; z-index: 0;
}

.app { position: relative; z-index: 1; width: 100%; max-width: 500px; padding: 0 16px; }

header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 0; border-bottom: 1px solid var(--border);
}

.logo { display: flex; align-items: center; gap: 10px; }

.logo-icon {
  width: 36px; height: 36px; border-radius: 8px;
  background: linear-gradient(135deg, var(--green), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 800; color: var(--surface);
  font-family: 'Space Mono', monospace;
  box-shadow: 0 2px 10px var(--green-glow);
}

.logo h1 {
  font-family: 'Space Mono', monospace;
  font-size: 22px; font-weight: 700; letter-spacing: 3px;
  text-transform: uppercase;
}

.header-btns { display: flex; gap: 8px; }

.icon-btn {
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--surface); border: 1px solid var(--border);
  color: var(--text-dim); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; transition: all 0.2s;
}

.icon-btn:hover { background: var(--surface2); color: var(--text); }

.toast {
  position: fixed; top: 70px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: var(--bg); padding: 10px 24px;
  border-radius: 10px; font-weight: 600; font-size: 14px;
  z-index: 100; opacity: 0; pointer-events: none;
  transition: opacity 0.3s;
}

.toast.show { opacity: 1; }

.board {
  display: flex; flex-direction: column; align-items: center;
  gap: 6px; padding: 24px 0 16px;
}

.row { display: flex; gap: 6px; }

.tile {
  width: 58px; height: 58px; border-radius: 8px;
  border: 2px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Space Mono', monospace;
  font-size: 24px; font-weight: 700; text-transform: uppercase;
  transition: transform 0.1s, border-color 0.15s;
  background: var(--surface); color: var(--text);
}

.tile.filled { border-color: var(--gray-light); animation: pop 0.1s ease; color: var(--text); }

.tile.correct {
  background: var(--green); border-color: var(--green);
  color: var(--surface); box-shadow: 0 2px 12px var(--green-glow);
}

.tile.present {
  background: var(--yellow); border-color: var(--yellow);
  color: var(--surface); box-shadow: 0 2px 12px var(--yellow-glow);
}

.tile.absent { background: var(--gray); border-color: var(--gray); color: var(--surface); }

.tile.reveal { animation: flipIn 0.3s ease forwards; }

@keyframes pop { 0%{transform:scale(1)} 50%{transform:scale(1.12)} 100%{transform:scale(1)} }
@keyframes flipIn { 0%{transform:rotateX(90deg)} 100%{transform:rotateX(0deg)} }
@keyframes bounce { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-20px)} }
@keyframes shake{0%,100%{transform:translateX(0)}20%{transform:translateX(-6px)}40%{transform:translateX(6px)}60%{transform:translateX(-4px)}80%{transform:translateX(4px)}}

.tile.win { animation: bounce 0.5s ease; }

.keyboard { padding: 4px 0 20px; display: flex; flex-direction: column; align-items: center; gap: 6px; }

.kb-row { display: flex; gap: 5px; }

.key {
  height: 52px; min-width: 32px; padding: 0 8px;
  border-radius: 8px; border: none;
  background: var(--surface2); color: var(--text);
  font-family: 'Sora', sans-serif; font-size: 14px; font-weight: 600;
  cursor: pointer; text-transform: uppercase;
  transition: all 0.15s; display: flex; align-items: center; justify-content: center;
}

.key:active { transform: scale(0.93); }

.key.wide { min-width: 58px; font-size: 12px; }

.key.correct { background: var(--green); color: var(--surface); }

.key.present { background: var(--yellow); color: var(--surface); }

.key.absent { background: #c4cad0; color: var(--surface); }

.modal-overlay {
  position: fixed; inset: 0; background: rgba(44, 62, 80, 0.3);
  backdrop-filter: blur(6px); z-index: 50;
  display: none; align-items: center; justify-content: center;
  padding: 20px;
}

.modal-overlay.open { display: flex; }

.modal {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 28px; width: 100%; max-width: 380px;
  position: relative; box-shadow: 0 8px 40px rgba(44,62,80,0.12);
}

.modal-close {
  position: absolute; top: 12px; right: 12px;
  background: none; border: none; color: var(--text-dim);
  font-size: 22px; cursor: pointer;
}

.modal h2 {
  font-family: 'Space Mono', monospace;
  font-size: 18px; text-align: center; margin-bottom: 20px;
  letter-spacing: 2px; text-transform: uppercase;
}

.dist-title {
  font-size: 14px !important;
  margin-bottom: 14px;
}

.stats-row { display: flex; justify-content: center; gap: 16px; margin-bottom: 20px; }

.stat-item { text-align: center; }

.stat-num { font-size: 28px; font-weight: 800; font-family: 'Space Mono', monospace; }

.stat-label { font-size: 11px; color: var(--text-dim); margin-top: 2px; }

.dist-row { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }

.dist-num { font-family: 'Space Mono', monospace; font-size: 13px; width: 14px; text-align: right; color: var(--text-dim); }

.dist-bar {
  height: 24px; border-radius: 4px; background: var(--gray-light);
  display: flex; align-items: center; justify-content: flex-end;
  padding-right: 8px; font-size: 12px; font-weight: 700; color: var(--surface);
  font-family: 'Space Mono', monospace; min-width: 24px;
  transition: width 0.4s ease;
}

.dist-bar.highlight { background: var(--green); }

.share-btn {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; padding: 14px; border-radius: 12px; border: none;
  background: linear-gradient(135deg, var(--green), #5a9a58);
  color: var(--surface); font-family: 'Sora', sans-serif; font-size: 15px;
  font-weight: 700; cursor: pointer; margin-top: 16px;
  transition: transform 0.15s, box-shadow 0.15s;
  box-shadow: 0 4px 20px var(--green-glow);
}

.share-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 28px var(--green-glow); }

.help-section { padding: 8px 0; }

.help-section p { font-size: 14px; color: var(--text-dim); line-height: 1.6; margin-bottom: 12px; }

.example-row { display: flex; gap: 5px; margin-bottom: 16px; }

.mini-tile {
  width: 38px; height: 38px; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-family: 'Space Mono', monospace; font-size: 16px; font-weight: 700;
  text-transform: uppercase; border: 2px solid var(--border);
  background: var(--surface); color: var(--text);
}

.mini-tile.correct { background: var(--green); border-color: var(--green); color: var(--surface); }

.mini-tile.present { background: var(--yellow); border-color: var(--yellow); color: var(--surface); }

.mini-tile.absent { background: var(--gray); border-color: var(--gray); color: var(--surface); }

.help-hint { font-size: 13px; color: var(--text-dim); margin-top: -8px; margin-bottom: 16px; }

.hint-green { color: var(--green); }

.hint-yellow { color: var(--yellow); }

.hint-dim { color: var(--text-dim); }

.help-footer { text-align: center; color: var(--accent); font-weight: 600; }

@media (max-width: 400px) {
  .tile { width: 50px; height: 50px; font-size: 20px; }
  .key { height: 46px; min-width: 27px; font-size: 12px; }
  .key.wide { min-width: 48px; }
}