@import url('https://fonts.googleapis.com/css2?family=Raleway:wght@400;600;700;800;900&display=swap');

/* ── Theme variables ── */
:root {
  --bg:                  #0d0d1a;
  --bg-board:            #1e1e3a;
  --bg-tile-absent:      #2c2c3a;
  --tile-border:         #2a2a4a;
  --tile-active-border:  #a78bfa;
  --tile-correct:        #22c55e;
  --tile-correct-glow:   rgba(34,197,94,0.33);
  --tile-present:        #f59e0b;
  --tile-present-glow:   rgba(245,158,11,0.33);
  --text:                #ffffff;
  --text-muted:          #888888;
  --key-bg:              #1e1e3a;
  --key-border:          rgba(167,139,250,0.2);
  --key-text:            #a78bfa;
  --key-absent-bg:       #2a2a3a;
  --key-absent-text:     #444444;
  --tab-active-from:     #a78bfa;
  --tab-active-to:       #38bdf8;
  --title-color:         #38bdf8;
  --badge-active-border: #f59e0b;
  --badge-solved-bg:     #22c55e;
  --badge-lost-bg:       #ef4444;
  --board-solved-border: rgba(34,197,94,0.4);
  --board-solved-bg:     rgba(15,31,15,0.8);
  --overlay-bg:          rgba(0,0,0,0.85);
  --overlay-box-bg:      #1e1e3a;
}


/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Raleway', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  touch-action: pan-x pan-y;
}

/* ── Header ── */
.header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--tile-border);
  flex-shrink: 0;
}

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

.hub-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(167, 139, 250, 0.8);
  text-decoration: none;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: rgba(167, 139, 250, 0.08);
  border: 1px solid rgba(167, 139, 250, 0.25);
  border-radius: 20px;
  padding: 6px 14px;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.hub-back:hover {
  color: #a78bfa;
  background: rgba(167, 139, 250, 0.15);
  border-color: rgba(167, 139, 250, 0.5);
}

.title {
  font-size: 32px;
  font-weight: 900;
  letter-spacing: 8px;
  color: var(--title-color);
  text-transform: uppercase;
}


/* ── Mode tabs ── */
.mode-tabs {
  display: flex;
  gap: 6px;
}

.mode-tab {
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-family: 'Raleway', sans-serif;
  font-size: 0.85rem;
  font-weight: 800;
  cursor: pointer;
  border: 1px solid var(--tile-border);
  background: var(--key-bg);
  color: var(--text-muted);
  transition: background 0.15s, color 0.15s;
}

.mode-tab.active {
  background: var(--tab-active-from);
  border-color: transparent;
  color: #0d0d1a;
}

/* ── Game container ── */
.game-container {
  width: 100%;
  max-width: 1400px;
  padding: 14px 20px 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}

/* ── Board badges ── */
.board-badges {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: center;
}

.board-badge {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 800;
  border: 1px solid var(--tile-border);
  color: var(--text-muted);
  background: var(--bg-board);
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.board-badge.badge-active {
  border-color: var(--badge-active-border);
  color: var(--badge-active-border);
}

.board-badge.badge-solved {
  background: var(--badge-solved-bg);
  border-color: var(--badge-solved-bg);
  color: #fff;
}

.board-badge.badge-lost {
  background: var(--badge-lost-bg);
  border-color: var(--badge-lost-bg);
  color: #fff;
}

/* ── Board grid ── */
.board-grid {
  display: grid;
  gap: 8px;
  width: 100%;
  justify-content: center;
}

.board-grid.mode-classic { grid-template-columns: 1fr; max-width: 380px; width: 380px; flex: 1; }
.board-grid.mode-quad    { grid-template-columns: repeat(2, 1fr); max-width: 760px; }
.board-grid.mode-octo    { grid-template-columns: repeat(4, 1fr); width: 100%; }
.board-grid.mode-16      { grid-template-columns: repeat(4, 1fr); width: 100%; }

.board-cell {
  background: var(--bg-board);
  border: 1px solid var(--tile-border);
  border-radius: 6px;
  padding: 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}

.board-cell.solved {
  background: var(--board-solved-bg);
  border-color: var(--board-solved-border);
}

.board-cell.lost {
  border-color: rgba(239,68,68,0.4);
}

.board-label {
  font-size: 7px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--text-muted);
  text-transform: uppercase;
  min-height: 10px;
}

.board-cell.solved .board-label { color: var(--tile-correct); }

.board-answer {
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 2px;
  color: #ef4444;
  text-transform: uppercase;
  min-height: 11px;
}

/* ── Rows and tiles ── */
.board { display: flex; flex-direction: column; gap: 3px; }
.row   { display: flex; gap: 3px; }

/* Classic mode: stretch board to fill available height */
.board-grid.mode-classic .board-cell { height: 100%; }
.board-grid.mode-classic .board { flex: 1; }
.board-grid.mode-classic .row { flex: 1; }

.tile {
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  text-transform: uppercase;
  border: 1px solid var(--tile-border);
  border-radius: 3px;
  transition: border-color 0.1s, transform 0.1s;
  color: var(--text);
}

.mode-classic .tile { width: 62px; height: auto; max-height: 80px; font-size: 2em; }
.mode-quad    .tile { width: 46px; height: 46px; font-size: 1.5em; }
.mode-octo    .tile { width: 32px; height: 32px; font-size: 1em; }
.mode-16      .tile { width: 26px; height: 26px; font-size: 0.75em; }

.tile.tile-active { border-color: var(--tile-active-border); }
.tile.pulse       { transform: scale(1.1); }
.tile.invalid     { border-color: #ef4444 !important; }

.tile.correct {
  background: var(--tile-correct);
  color: #fff;
  border-color: var(--tile-correct);
  box-shadow: 0 0 8px var(--tile-correct-glow);
}
.tile.present {
  background: var(--tile-present);
  color: #fff;
  border-color: var(--tile-present);
  box-shadow: 0 0 8px var(--tile-present-glow);
}
.tile.absent {
  background: var(--bg-tile-absent);
  color: var(--text-muted);
  border-color: var(--bg-tile-absent);
}

/* ── Keyboard ── */
.keyboard-container {
  width: 100%;
  padding: 10px 20px 20px;
  border-top: 1px solid var(--tile-border);
  background: var(--bg);
  flex-shrink: 0;
  position: sticky;
  bottom: 0;
}

.keyboard { display: flex; flex-direction: column; gap: 6px; align-items: stretch; }
.keyboard-row { display: flex; gap: 5px; justify-content: center; }

.key {
  flex: 1;
  max-width: 52px;
  height: 58px;
  padding: 0 4px;
  background: var(--key-bg);
  border: 1px solid var(--key-border);
  border-radius: 5px;
  color: var(--key-text);
  font-family: 'Raleway', sans-serif;
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: filter 0.1s;
  user-select: none;
}

.key.key-wide { max-width: 72px; font-size: 11px; }
.key:active, .key.key-hover { filter: brightness(0.75); }
.key.key-absent { background: var(--key-absent-bg) !important; color: var(--key-absent-text) !important; }
.key.key-correct, .key.key-present { color: #fff !important; }

/* ── Overlay ── */
.overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.overlay-box {
  background: var(--overlay-box-bg);
  border: 1px solid var(--tile-border);
  border-radius: 10px;
  padding: 28px 36px;
  text-align: center;
  max-width: 440px;
  width: 90%;
}

.overlay-box h1 { font-size: 2em; margin-bottom: 8px; }
.overlay-box h2 { font-size: 1em; color: var(--text-muted); margin-bottom: 16px; font-weight: 600; }

.overlay-words {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-bottom: 20px;
}

.overlay-word {
  padding: 5px 12px;
  background: var(--bg-tile-absent);
  border-radius: 4px;
  font-weight: 800;
  letter-spacing: 2px;
  font-size: 0.9em;
  text-transform: uppercase;
}

.play-again-btn {
  width: 100%;
  padding: 14px;
  background: var(--tile-correct);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-family: 'Raleway', sans-serif;
  font-size: 1em;
  font-weight: 800;
  cursor: pointer;
}

/* ── Responsive: iPad portrait (≤820px) ── */
@media (max-width: 820px) {
  .mode-octo .tile { width: 28px; height: 28px; font-size: 0.85em; }
  .mode-16   .tile { width: 20px; height: 20px; font-size: 0.6em; }
}

/* ── Tab label visibility ── */
.tab-label-short { display: none; }
.tab-label-long  { display: inline; }

/* ── Word-tile logo (hidden on desktop) ── */
.logo-tiles {
  display: none;
  gap: 2px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.logo-tile {
  width: 22px;
  height: 22px;
  border: 1px solid var(--tab-active-from);
  border-radius: 3px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 11px;
  text-transform: uppercase;
  background: var(--tab-active-from);
  color: #0d0d1a;
  flex-shrink: 0;
}

/* ── Responsive: mobile (≤600px) ── */
@media (max-width: 600px) {
  .header { padding: 10px 12px 8px; position: relative; }
  .title  { display: none; }
  .logo-tiles { display: flex; }
  .mode-tab { padding: 5px 8px; font-size: 11px; }

  .tab-label-short { display: inline; }
  .tab-label-long  { display: none; }

  .game-container { padding: 8px 8px 6px; }

  .board-grid.mode-classic { width: auto; max-width: calc(100vw - 32px); }
  .board-grid.mode-octo    { grid-template-columns: repeat(2, 1fr); }

  .mode-classic .tile { width: 62px; height: auto; max-height: 80px; font-size: 2em; }
  .mode-quad    .tile { width: 38px; height: 38px; font-size: 1.2em; }
  .mode-octo    .tile { width: 30px; height: 30px; font-size: 0.9em; }
  .mode-16      .tile { width: 14px; height: 14px; font-size: 0.45em; }

  .key { height: 50px; font-size: 12px; }
  .key.key-wide { max-width: 60px; font-size: 11px; }
  .keyboard-row { gap: 3px; }
  .keyboard { gap: 4px; }
  .keyboard-container { padding: 6px 8px 12px; }
}

/* ── Responsive: small phone (≤390px) ── */
@media (max-width: 390px) {
  .title { font-size: 13px; letter-spacing: 1px; }
  .mode-tab { padding: 4px 8px; font-size: 10px; }

  .mode-classic .tile { width: 44px; font-size: 1.3em; }
  .mode-quad    .tile { width: 30px; height: 30px; font-size: 0.9em; }
  .mode-octo    .tile { width: 26px; height: 26px; font-size: 0.8em; }

  .key { height: 44px; font-size: 11px; }
  .key.key-wide { max-width: 54px; font-size: 10px; }
  .keyboard-row { gap: 2px; }
  .keyboard { gap: 3px; }
}