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

:root { color-scheme: light only; }
* { box-sizing: border-box; margin: 0; padding: 0; }

/* ============================================================
   TEMAS — variables por tema
   ============================================================ */

/* CLARO */
[data-theme="light"] {
  --bg:           #f4f6fb;
  --bg2:          #eaecf4;
  --surface:      #ffffff;
  --surface2:     #f0f2f8;
  --border:       #dde2ef;
  --border-strong:#9aa3bf;
  --text:         #1a2035;
  --text-2:       #4a5270;
  --text-dim:     #8892b0;
  --p1:           #2563eb;
  --p2:           #7c3aed;
  --selected:     #dbeafe;
  --highlight:    #eff6ff;
  --diagonal:     rgba(37,99,235,0.11);
  --diagonal-strong: rgba(37,99,235,0.18);
  --same-num:     #bfdbfe;
  --error:        #ef4444;
  --opponent:     rgba(124,58,237,0.12);
  --success:      #10b981;
  --shadow:       0 2px 12px rgba(0,0,0,0.08);
  --shadow-lg:    0 8px 32px rgba(0,0,0,0.12);
  --num-color:    #1e40af;
}

/* OSCURO */
[data-theme="dark"] {
  --bg:           #0f1117;
  --bg2:          #161b27;
  --surface:      #1c2333;
  --surface2:     #222940;
  --border:       #2a3450;
  --border-strong:#3d4f7a;
  --text:         #e8eaf6;
  --text-2:       #aab4d4;
  --text-dim:     #6b7aaa;
  --p1:           #4d8aff;
  --p2:           #a472ff;
  --selected:     #1e3a6e;
  --highlight:    #162040;
  --diagonal:     rgba(77,138,255,0.14);
  --diagonal-strong: rgba(77,138,255,0.22);
  --same-num:     #1a3060;
  --error:        #f87171;
  --opponent:     rgba(164,114,255,0.15);
  --success:      #34d399;
  --shadow:       0 2px 12px rgba(0,0,0,0.4);
  --shadow-lg:    0 8px 32px rgba(0,0,0,0.5);
  --num-color:    #60a5fa;
}

/* OCÉANO */
[data-theme="ocean"] {
  --bg:           #0a1628;
  --bg2:          #0d1f3c;
  --surface:      #102040;
  --surface2:     #152850;
  --border:       #1e3a6e;
  --border-strong:#2d5499;
  --text:         #cce4ff;
  --text-2:       #88aadd;
  --text-dim:     #4a72aa;
  --p1:           #38bdf8;
  --p2:           #818cf8;
  --selected:     #0c3060;
  --highlight:    #082040;
  --diagonal:     rgba(56,189,248,0.13);
  --diagonal-strong: rgba(56,189,248,0.22);
  --same-num:     #0a2850;
  --error:        #fb7185;
  --opponent:     rgba(129,140,248,0.18);
  --success:      #2dd4bf;
  --shadow:       0 2px 12px rgba(0,0,0,0.5);
  --shadow-lg:    0 8px 32px rgba(0,0,0,0.6);
  --num-color:    #38bdf8;
}

/* ============================================================
   BASE
   ============================================================ */
html, body {
  width: 100%; height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'Nunito', 'Segoe UI', system-ui, sans-serif;
  -webkit-text-size-adjust: 100%;
  touch-action: manipulation;
}

body:not(.lobby-body) {
  overflow: hidden;
}

.hidden { display: none !important; }

/* ============================================================
   LOBBY — PANTALLA DE INICIO
   ============================================================ */

body.lobby-body {
  overflow-y: auto;
  min-height: 100dvh;
}

.lobby-screen {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 20px 40px;
  background: var(--bg);
  position: relative;
}

/* Topbar */
.lobby-topbar {
  width: 100%;
  max-width: 400px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0 8px;
}

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

.brand-logo {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--p1), var(--p2));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; font-weight: 900; color: white;
  box-shadow: 0 3px 10px rgba(37,99,235,0.3);
}

.brand-name {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.5px;
}

.theme-toggle {
  width: 38px; height: 38px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow);
  transition: transform 0.2s;
}
.theme-toggle:active { transform: scale(0.9); }

/* Hero */
.lobby-hero {
  width: 100%; max-width: 400px;
  text-align: center;
  padding: 8px 0 20px;
}

.lobby-tagline {
  font-size: 0.8rem;
  color: var(--text-dim);
  letter-spacing: 0.5px;
  font-weight: 600;
}

/* Secciones */
.lobby-section {
  width: 100%; max-width: 400px;
  margin-bottom: 16px;
}

.section-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

/* Input nombre */
.name-input {
  width: 100%;
  padding: 14px 16px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 14px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  font-family: 'Nunito', sans-serif;
  box-shadow: var(--shadow);
  transition: border-color 0.2s;
}
.name-input::placeholder { color: var(--text-dim); font-weight: 400; }
.name-input:focus { outline: none; border-color: var(--p1); }

/* Continuar partida */
.continue-card {
  width: 100%; max-width: 400px;
  background: var(--surface);
  border: 2px solid var(--p1);
  border-radius: 16px;
  padding: 14px 16px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
  box-shadow: 0 4px 16px rgba(37,99,235,0.15);
  margin-bottom: 16px;
}

.continue-left { display: flex; align-items: center; gap: 12px; flex: 1; min-width: 0; }

.continue-icon {
  width: 36px; height: 36px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--p1), var(--p2));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem; color: white;
}

.continue-title { font-size: 0.9rem; font-weight: 800; color: var(--p1); }
.continue-meta  { font-size: 0.72rem; color: var(--text-dim); margin-top: 1px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.btn-pill {
  padding: 8px 18px;
  border: none; border-radius: 20px;
  font-size: 0.85rem; font-weight: 800;
  cursor: pointer; white-space: nowrap;
  font-family: 'Nunito', sans-serif;
  transition: transform 0.1s;
}
.btn-pill:active { transform: scale(0.94); }
.btn-pill-blue { background: var(--p1); color: white; }

/* Dificultad */
.diff-selector {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.diff-opt {
  display: flex; flex-direction: column;
  align-items: center; gap: 2px;
  padding: 14px 10px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 14px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, transform 0.1s;
  box-shadow: var(--shadow);
  font-family: 'Nunito', sans-serif;
}
.diff-opt:active { transform: scale(0.96); }
.diff-opt.active {
  border-color: var(--p1);
  background: var(--highlight);
}
.diff-name { font-size: 0.95rem; font-weight: 800; color: var(--text); }
.diff-desc { font-size: 0.72rem; color: var(--text-dim); font-weight: 600; }
.diff-opt.active .diff-name { color: var(--p1); }

/* Acciones principales */
.main-actions {
  width: 100%; max-width: 400px;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 20px;
}

.main-action-btn {
  display: flex; align-items: center;
  gap: 12px;
  padding: 16px 14px;
  border: none; border-radius: 16px;
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.12s;
  font-family: 'Nunito', sans-serif;
  text-align: left;
  box-shadow: var(--shadow-lg);
}
.main-action-btn:active { transform: scale(0.96); box-shadow: var(--shadow); }

.primary-btn {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: white;
}
.secondary-btn {
  background: linear-gradient(135deg, #7c3aed, #6d28d9);
  color: white;
}

.action-icon {
  font-size: 1.6rem;
  line-height: 1;
  flex-shrink: 0;
}
.action-text { display: flex; flex-direction: column; gap: 1px; }
.action-title { font-size: 0.95rem; font-weight: 800; }
.action-sub   { font-size: 0.72rem; opacity: 0.8; font-weight: 600; }

/* Divisor */
.or-divider {
  width: 100%; max-width: 400px;
  display: flex; align-items: center; gap: 12px;
  color: var(--text-dim); font-size: 0.8rem; font-weight: 700;
  margin-bottom: 16px;
}
.or-divider::before, .or-divider::after {
  content: ''; flex: 1;
  height: 1px; background: var(--border);
}

/* Unirse — siempre abajo, cómodo */
.join-section {
  width: 100%; max-width: 400px;
  display: flex; flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.join-input {
  width: 100%;
  padding: 16px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 14px;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text);
  text-align: center;
  letter-spacing: 8px;
  text-transform: uppercase;
  font-family: 'Nunito', sans-serif;
  box-shadow: var(--shadow);
  transition: border-color 0.2s;
}
.join-input::placeholder { letter-spacing: 2px; font-size: 0.9rem; font-weight: 600; color: var(--text-dim); }
.join-input:focus { outline: none; border-color: var(--p1); }

.join-btn {
  width: 100%;
  padding: 16px;
  background: var(--text);
  color: var(--bg);
  border: none; border-radius: 14px;
  font-size: 1rem; font-weight: 800;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  font-family: 'Nunito', sans-serif;
  box-shadow: var(--shadow-lg);
  transition: transform 0.1s, opacity 0.1s;
}
.join-btn:active { transform: scale(0.97); opacity: 0.9; }
.join-arrow { font-size: 1.2rem; }

/* Error */
.error-msg {
  width: 100%; max-width: 400px;
  background: rgba(239,68,68,0.1);
  border: 1.5px solid var(--error);
  color: var(--error);
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
}

/* Footer */
.lobby-footer {
  margin-top: auto;
  padding-top: 20px;
  font-size: 0.72rem;
  color: var(--text-dim);
  text-align: center;
}

/* Spinner de carga */
.spinner {
  display: inline-block;
  width: 18px; height: 18px;
  border: 2.5px solid rgba(255,255,255,0.4);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================================
   CREAR TABLERO PROPIO
   ============================================================ */

.create-wrapper {
  width: 100%; height: 100dvh;
  overflow-y: auto;
  display: flex; justify-content: center;
  padding: 12px;
  background: var(--bg);
}
.create-container {
  width: 100%; max-width: 520px;
  display: flex; flex-direction: column;
  align-items: center; gap: 16px;
  padding: 20px 0 32px;
}
.create-title { font-size: 1.4rem; font-weight: 800; color: var(--text); }
.create-subtitle { font-size: 0.85rem; color: var(--text-dim); text-align: center; }

--cell-size: min(52px, calc((100dvw - 24px) / 9));

.board-input {
  display: grid;
  grid-template-columns: repeat(9, var(--cell-size));
  grid-template-rows: repeat(9, var(--cell-size));
  border: 2.5px solid var(--text); border-radius: 6px;
  overflow: hidden; background: var(--surface);
  box-shadow: var(--shadow-lg);
}
.cell-input {
  width: var(--cell-size); height: var(--cell-size);
  border-right: 1px solid var(--border); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: calc(var(--cell-size) * 0.42); font-weight: 800;
  color: var(--text); cursor: pointer; background: var(--surface);
  user-select: none; font-family: 'Nunito', sans-serif;
}
.cell-input:hover { background: var(--highlight); }
.cell-input.active-input { background: var(--selected) !important; outline: 2px solid var(--p1); outline-offset: -2px; z-index: 2; }
.cell-input.diagonal { background: var(--diagonal); }
.cell-input[data-col="2"], .cell-input[data-col="5"] { border-right: 2px solid var(--border-strong); }
.cell-input[data-row="2"], .cell-input[data-row="5"] { border-bottom: 2px solid var(--border-strong); }
.cell-input[data-col="8"] { border-right: none; }
.cell-input[data-row="8"] { border-bottom: none; }

.create-numpad { display: grid; grid-template-columns: repeat(5,1fr); gap: 8px; width: 100%; max-width: 280px; }
.create-num-btn {
  padding: 12px; background: var(--surface);
  border: 1.5px solid var(--border); border-radius: 10px;
  font-size: 1.2rem; font-weight: 800; color: var(--p1);
  cursor: pointer; font-family: 'Nunito', sans-serif;
  box-shadow: var(--shadow);
}
.create-num-btn:active { transform: scale(0.93); }
.create-num-btn.clear-btn { color: var(--error); border-color: var(--error); }
.create-actions { display: flex; gap: 10px; width: 100%; }
.create-actions .btn {
  flex: 1; padding: 13px; border: none; border-radius: 12px;
  font-size: 1rem; font-weight: 800; cursor: pointer; color: white;
  font-family: 'Nunito', sans-serif;
}
.btn-primary   { background: var(--p1); }
.btn-secondary { background: var(--p2); }

/* ============================================================
   JUEGO
   ============================================================ */

:root {
  --cell-size: min(52px, calc((100dvw - 24px) / 9));
}

.game-wrapper {
  width: 100dvw; height: 100dvh;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg); overflow: hidden; padding: 8px;
}

.game-container {
  width: 100%;
  max-width: calc(var(--cell-size) * 9 + 6px);
  display: flex; flex-direction: column; align-items: center;
  gap: clamp(4px, 1dvh, 10px);
}

/* Header — dos filas */
.game-header {
  width: 100%;
  display: flex; flex-direction: column; gap: 6px;
}

.game-header-top {
  display: flex; align-items: center; justify-content: space-between;
}

.home-btn {
  width: 36px; height: 36px;
  background: var(--surface); border: 1.5px solid var(--border);
  border-radius: 10px; font-size: 1.05rem;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow);
  -webkit-tap-highlight-color: transparent;
  font-weight: 700; color: var(--text);
}

.hdr-actions { display: flex; align-items: center; gap: 6px; }

.hdr-btn {
  width: 36px; height: 36px;
  background: var(--surface); border: 1.5px solid var(--border);
  border-radius: 10px; font-size: 1rem;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow);
  -webkit-tap-highlight-color: transparent;
}
.hdr-btn:active { transform: scale(0.92); }

.game-header-info {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  padding: 7px 14px;
  box-shadow: var(--shadow);
}

.hdr-errors {
  font-size: 0.78rem; font-weight: 800;
  color: var(--text-dim);
  min-width: 52px;
}
.hdr-errors.has-errors { color: var(--error); }

.hdr-diff {
  font-size: 0.78rem; font-weight: 700;
  color: var(--text-dim);
  text-align: center;
}

.hdr-timer {
  font-size: 0.95rem; font-weight: 900;
  color: var(--text); letter-spacing: 2px;
  font-variant-numeric: tabular-nums;
  min-width: 52px; text-align: right;
}

/* Legacy — por compatibilidad */
.timer {
  font-size: 0.95rem; font-weight: 900; color: var(--text);
  letter-spacing: 2px; font-variant-numeric: tabular-nums;
}
.header-right { display: flex; flex-direction: column; align-items: flex-end; gap: 2px; }
.room-code-display {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.8rem; font-weight: 800; color: var(--text); letter-spacing: 3px;
}
.share-btn {
  width: 26px; height: 26px;
  background: var(--p1); border: none;
  border-radius: 8px; font-size: 0.75rem;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
}
.error-badge { font-size: 0.7rem; font-weight: 800; color: var(--text-dim); }
.error-badge.has-errors { color: var(--error); }

/* Jugadores */
.players-bar {
  width: 100%; display: flex;
  align-items: center; justify-content: space-between; gap: 4px;
  transition: opacity 0.4s ease, max-height 0.4s ease;
  max-height: 48px; overflow: hidden;
}
.players-bar.hidden-coop {
  max-height: 0; opacity: 0; pointer-events: none; margin: 0;
}
.players-bar.reveal-coop {
  animation: coopReveal 0.5s cubic-bezier(0.175,0.885,0.32,1.275) forwards;
}
@keyframes coopReveal {
  from { max-height: 0; opacity: 0; transform: translateY(-8px); }
  to   { max-height: 48px; opacity: 1; transform: translateY(0); }
}

.player-tag {
  display: flex; align-items: center; gap: 5px;
  background: var(--surface); border: 1.5px solid var(--border);
  border-radius: 20px; padding: 4px 10px;
  font-size: 0.78rem; font-weight: 700; color: var(--text);
  box-shadow: var(--shadow);
}

.player-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }

.status-message {
  font-size: 0.7rem; color: var(--text-dim);
  text-align: center; flex: 1; padding: 0 4px; font-weight: 600;
}

/* ============================================================
   TABLERO
   ============================================================ */

.board {
  display: grid;
  grid-template-columns: repeat(9, var(--cell-size));
  grid-template-rows: repeat(9, var(--cell-size));
  border: 2.5px solid var(--text); border-radius: 8px;
  overflow: hidden; background: var(--surface);
  box-shadow: var(--shadow-lg); flex-shrink: 0;
}

.cell {
  width: var(--cell-size); height: var(--cell-size);
  display: flex; align-items: center; justify-content: center;
  font-size: calc(var(--cell-size) * 0.56);
  font-weight: 800;
  font-family: 'Nunito', sans-serif;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  cursor: pointer; position: relative;
  background: var(--surface); color: var(--text-dim);
  overflow: hidden; user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.1s;
}

.cell[data-col="2"], .cell[data-col="5"] { border-right: 2px solid var(--border-strong); }
.cell[data-row="2"], .cell[data-row="5"] { border-bottom: 2px solid var(--border-strong); }
.cell[data-col="8"] { border-right: none; }
.cell[data-row="8"] { border-bottom: none; }

.cell.fixed    { color: var(--text); font-weight: 800; cursor: default; }
.cell.diagonal {
  background: var(--diagonal);
  box-shadow: inset 0 0 0 1px rgba(37,99,235,0.18);
}
.cell.diagonal.highlight { background: var(--diagonal-strong); }
.cell.highlight.diagonal { background: var(--diagonal-strong); }
.cell.same-num           { background: var(--same-num); }

.cell.selected {
  background: var(--selected) !important;
  outline: 2.5px solid var(--p1); outline-offset: -2.5px; z-index: 2;
}
.cell.opponent-cell {
  background: var(--opponent) !important;
  outline: 2.5px solid var(--p2); outline-offset: -2.5px; z-index: 2;
  cursor: not-allowed;
}
.cell.conflict {
  background: rgba(239,68,68,0.1) !important;
}

/* Animaciones */
.cell.error { animation: errorShake 0.3s ease; }
@keyframes errorShake {
  0%,100% { transform: translateX(0); }
  25%      { transform: translateX(-3px); }
  75%      { transform: translateX(3px); }
}

.cell.correct { animation: correctPop 0.28s cubic-bezier(0.175,0.885,0.32,1.275); }
@keyframes correctPop {
  0%   { transform: scale(1); }
  55%  { transform: scale(1.2); }
  100% { transform: scale(1); }
}

.cell.correct-flash { animation: correctFlash 0.5s ease forwards; }
@keyframes correctFlash {
  0%   { background: var(--surface); }
  25%  { background: var(--selected); box-shadow: inset 0 0 0 2px var(--p1); }
  100% { background: var(--surface); box-shadow: none; }
}

.cell.section-complete { animation: sectionPop 0.55s ease forwards; }
@keyframes sectionPop {
  0%   { transform: scale(1);    background: var(--surface); }
  30%  { transform: scale(1.12); background: #bbf7d0; }
  65%  { transform: scale(1.05); background: #86efac; }
  100% { transform: scale(1);    background: var(--surface); }
}

.cell.blocked-flash { animation: blocked 0.35s ease; }
@keyframes blocked {
  0%,100% { background: rgba(239,68,68,0.05); }
  50%     { background: rgba(239,68,68,0.2); }
}

/* Diagonal completada — animación más espectacular */
.cell.diagonal-complete {
  animation: diagonalPop 0.75s cubic-bezier(0.175,0.885,0.32,1.275) forwards;
  z-index: 3;
}
@keyframes diagonalPop {
  0%   { transform: scale(1);    background: var(--diagonal); box-shadow: none; }
  20%  { transform: scale(1.22); background: rgba(251,191,36,0.45); box-shadow: 0 0 18px rgba(251,191,36,0.7); }
  50%  { transform: scale(1.12); background: rgba(251,191,36,0.28); box-shadow: 0 0 10px rgba(251,191,36,0.4); }
  75%  { transform: scale(1.06); background: rgba(251,191,36,0.15); }
  100% { transform: scale(1);    background: var(--diagonal); box-shadow: none; }
}

/* ============================================================
   PENCIL MARKS
   ============================================================ */
.notes-grid {
  display: grid; grid-template-columns: repeat(3,1fr);
  grid-template-rows: repeat(3,1fr);
  width: 100%; height: 100%; padding: 1px;
}
.note-num {
  display: flex; align-items: center; justify-content: center;
  font-size: calc(var(--cell-size) * 0.2); font-weight: 700;
  color: var(--p1); opacity: 0.7; line-height: 1;
  font-family: 'Nunito', sans-serif;
}

/* ============================================================
   TOOLBAR
   ============================================================ */
.toolbar { display: flex; gap: 6px; width: 100%; justify-content: center; }

.tool-btn {
  flex: 1; max-width: 80px;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 8px 4px;
  background: var(--surface); border: 1.5px solid var(--border);
  border-radius: 12px; cursor: pointer;
  box-shadow: var(--shadow);
  -webkit-tap-highlight-color: transparent;
  font-family: 'Nunito', sans-serif;
}
.tool-btn:active { transform: scale(0.93); }
.tool-icon  { font-size: 1.2rem; line-height: 1; }
.tool-label { font-size: 0.6rem; color: var(--text-dim); font-weight: 700; }
.tool-btn.active { background: var(--highlight); border-color: var(--p1); }
.tool-btn.active .tool-label { color: var(--p1); }
.tool-btn.muted { opacity: 0.45; }

/* ============================================================
   NUMPAD
   ============================================================ */
.numpad { display: grid; grid-template-columns: repeat(9,1fr); gap: 4px; width: 100%; }

.num-btn {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  height: clamp(50px, 7.5dvh, 68px);
  background: var(--surface); border: 2px solid var(--border);
  border-radius: 12px; cursor: pointer;
  box-shadow: var(--shadow); padding: 4px 2px;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.08s, box-shadow 0.08s;
  font-family: 'Nunito', sans-serif;
}
.num-btn:active { transform: scale(0.88); box-shadow: none; }
.num-btn.depleted { opacity: 0.18; pointer-events: none; }

.num-val {
  font-size: clamp(17px, calc(var(--cell-size)*0.52), 28px);
  font-weight: 900; color: var(--num-color); line-height: 1;
  font-family: 'Nunito', sans-serif;
}
.num-count {
  font-size: clamp(8px, 1.6dvw, 10px);
  color: var(--text-dim); font-weight: 700; line-height: 1; margin-top: 1px;
}
.num-btn.note-mode .num-val  { color: var(--text-dim); opacity: 0.5; }
.num-btn.note-mode .num-count { display: none; }

/* ============================================================
   MODAL COMPARTIR
   ============================================================ */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex; align-items: center; justify-content: center;
  z-index: 200;
  backdrop-filter: blur(4px);
}

.modal-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 20px;
  padding: 28px 24px;
  width: min(340px, 92vw);
  text-align: center;
  box-shadow: var(--shadow-lg);
  animation: modalPop 0.3s cubic-bezier(0.175,0.885,0.32,1.275);
}
@keyframes modalPop {
  from { transform: scale(0.85); opacity: 0; }
  to   { transform: scale(1);    opacity: 1; }
}

.modal-card h3 {
  font-size: 1.1rem; font-weight: 800;
  color: var(--text); margin-bottom: 16px;
}

.share-code-display {
  font-size: 2.5rem; font-weight: 900;
  color: var(--p1); letter-spacing: 8px;
  margin-bottom: 8px;
}

.share-hint {
  font-size: 0.8rem; color: var(--text-dim);
  font-weight: 600; margin-bottom: 20px;
}

.share-buttons { display: flex; gap: 10px; margin-bottom: 14px; }

.share-action-btn {
  flex: 1; padding: 13px 8px;
  border: none; border-radius: 12px;
  font-size: 0.9rem; font-weight: 800;
  cursor: pointer; display: flex;
  align-items: center; justify-content: center; gap: 6px;
  font-family: 'Nunito', sans-serif;
  transition: transform 0.1s;
}
.share-action-btn:active { transform: scale(0.96); }

.whatsapp-btn { background: #25D366; color: white; }
.copy-btn     { background: var(--surface2); color: var(--text); border: 1.5px solid var(--border); }

.modal-close {
  width: 100%; padding: 10px;
  background: none; border: 1.5px solid var(--border);
  border-radius: 10px; font-size: 0.85rem;
  font-weight: 700; color: var(--text-dim);
  cursor: pointer; font-family: 'Nunito', sans-serif;
}

/* ============================================================
   TOAST GUARDADO
   ============================================================ */
.save-toast {
  position: fixed; bottom: 24px; left: 50%;
  transform: translateX(-50%);
  background: var(--text); color: var(--bg);
  padding: 10px 20px; border-radius: 20px;
  font-size: 0.9rem; font-weight: 700; z-index: 300;
  animation: toastIn 0.3s ease;
  font-family: 'Nunito', sans-serif;
}
@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(10px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ============================================================
   WIN SCREEN
   ============================================================ */
.win-screen {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.55);
  display: flex; align-items: center; justify-content: center;
  z-index: 100; backdrop-filter: blur(6px);
}

#confetti-canvas { position: absolute; inset: 0; pointer-events: none; }

.win-card {
  position: relative; z-index: 1;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 24px;
  padding: 36px 28px; text-align: center;
  width: min(320px, 90vw);
  box-shadow: var(--shadow-lg);
  animation: winCardPop 0.5s cubic-bezier(0.175,0.885,0.32,1.275);
}
@keyframes winCardPop {
  from { transform: scale(0.6); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}

.win-emoji {
  font-size: 3.5rem; margin-bottom: 8px;
  animation: winSpin 0.6s ease 0.3s both;
}
@keyframes winSpin {
  from { transform: rotate(-20deg) scale(0.8); }
  60%  { transform: rotate(15deg) scale(1.2); }
  to   { transform: rotate(0) scale(1); }
}

.win-card h2 { font-size: 1.4rem; font-weight: 900; color: var(--text); margin-bottom: 20px; }

.win-stats {
  display: flex; align-items: center; justify-content: center;
  gap: 20px; margin-bottom: 24px;
  background: var(--surface2); border-radius: 14px; padding: 16px;
}

.win-stat { display: flex; flex-direction: column; align-items: center; gap: 3px; }
.win-stat-val   { font-size: 1.6rem; font-weight: 900; color: var(--p1); }
.win-stat-label { font-size: 0.72rem; color: var(--text-dim); font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; }
.win-stat-divider { width: 1px; height: 40px; background: var(--border); }

.win-card button {
  width: 100%; padding: 14px;
  background: linear-gradient(135deg, var(--p1), var(--p2));
  border: none; border-radius: 14px;
  color: white; font-size: 1rem; font-weight: 800;
  cursor: pointer; font-family: 'Nunito', sans-serif;
}

/* ============================================================
   BOTTOM NAVIGATION
   ============================================================ */

.bottom-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: 64px;
  background: var(--surface);
  border-top: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-around;
  z-index: 50;
  padding-bottom: env(safe-area-inset-bottom);
  box-shadow: 0 -4px 20px rgba(0,0,0,0.06);
}

.nav-btn {
  flex: 1;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 3px;
  padding: 8px 4px;
  background: none; border: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.nav-icon  { font-size: 1.4rem; line-height: 1; transition: transform 0.2s; }
.nav-label { font-size: 0.65rem; font-weight: 700; color: var(--text-dim); font-family: 'Nunito', sans-serif; }

.nav-btn.active .nav-icon  { transform: scale(1.1); }
.nav-btn.active .nav-label { color: var(--p1); }

/* ============================================================
   VIEWS — sistema de tabs
   ============================================================ */

.view {
  display: none;
  flex-direction: column;
  height: calc(100dvh - 64px); /* menos la nav */
  overflow: hidden;
}

.active-view { display: flex; }

.view-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 0 16px;
  -webkit-overflow-scrolling: touch;
}

/* ============================================================
   LOBBY — HOME TAB
   ============================================================ */

body.lobby-body {
  overflow: hidden;
  height: 100dvh;
  background: var(--bg);
}

.home-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0 16px;
}

.home-brand { display: flex; align-items: center; gap: 8px; }

.brand-logo-sm {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--p1), var(--p2));
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; font-weight: 900; color: white;
}

.brand-title { font-size: 1.1rem; font-weight: 800; color: var(--text); }

.streak-badge {
  display: flex; align-items: center; gap: 4px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 20px;
  padding: 5px 12px;
  font-size: 0.85rem; font-weight: 800; color: var(--text);
  box-shadow: var(--shadow);
}

.home-section { margin-bottom: 20px; }

.section-title {
  font-size: 0.72rem; font-weight: 800;
  color: var(--text-dim);
  text-transform: uppercase; letter-spacing: 1px;
  margin-bottom: 10px;
}

/* Continuar en home */
.continue-card-home {
  background: var(--surface);
  border: 2px solid var(--p1);
  border-radius: 16px;
  padding: 14px 16px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  box-shadow: 0 4px 16px rgba(37,99,235,0.12);
}
.continue-card-left { display: flex; align-items: center; gap: 12px; flex: 1; min-width: 0; }
.continue-card-icon {
  width: 36px; height: 36px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--p1), var(--p2));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem; color: white;
}
.continue-card-title { font-size: 0.9rem; font-weight: 800; color: var(--p1); }
.continue-card-meta  { font-size: 0.72rem; color: var(--text-dim); margin-top: 1px; }

.pill-btn {
  padding: 8px 18px; border: none; border-radius: 20px;
  font-size: 0.85rem; font-weight: 800; cursor: pointer;
  white-space: nowrap; font-family: 'Nunito', sans-serif;
}
.pill-blue { background: var(--p1); color: white; }

/* Unirse en home */
.join-row-home { display: flex; gap: 8px; }

.join-input-home {
  flex: 1; padding: 13px 12px;
  background: var(--surface);
  border: 2px solid var(--border); border-radius: 13px;
  font-size: 1.1rem; font-weight: 800; color: var(--text);
  text-align: center; letter-spacing: 6px; text-transform: uppercase;
  font-family: 'Nunito', sans-serif;
  box-shadow: var(--shadow);
}
.join-input-home::placeholder { letter-spacing: 1px; font-size: 0.8rem; font-weight: 600; color: var(--text-dim); }
.join-input-home:focus { outline: none; border-color: var(--p1); }

.join-btn-home {
  padding: 13px 16px;
  background: var(--text); color: var(--bg);
  border: none; border-radius: 13px;
  font-size: 0.9rem; font-weight: 800; cursor: pointer;
  white-space: nowrap; font-family: 'Nunito', sans-serif;
  box-shadow: var(--shadow);
}
.join-btn-home:active { transform: scale(0.96); }

/* Tablero propio */
.custom-card {
  width: 100%;
  display: flex; align-items: center; gap: 12px;
  padding: 14px 16px;
  background: var(--surface);
  border: 1.5px solid var(--border); border-radius: 14px;
  cursor: pointer; text-align: left;
  box-shadow: var(--shadow); font-family: 'Nunito', sans-serif;
}
.custom-card:active { transform: scale(0.98); }
.custom-card-icon { font-size: 1.4rem; }
.custom-card-text { flex: 1; }
.custom-card-title { font-size: 0.95rem; font-weight: 800; color: var(--text); }
.custom-card-sub   { font-size: 0.75rem; color: var(--text-dim); font-weight: 600; }
.custom-card-arrow { font-size: 1.4rem; color: var(--text-dim); }

/* Botón Nuevo Juego fijo */
.nuevo-juego-bar {
  position: sticky; bottom: 0;
  padding: 12px 16px;
  background: linear-gradient(to top, var(--bg) 80%, transparent);
}

.nuevo-juego-btn {
  width: 100%; padding: 16px;
  background: linear-gradient(135deg, var(--p1), #1d4ed8);
  color: white; border: none; border-radius: 16px;
  font-size: 1.1rem; font-weight: 900;
  cursor: pointer; font-family: 'Nunito', sans-serif;
  box-shadow: 0 6px 20px rgba(37,99,235,0.35);
  transition: transform 0.1s, box-shadow 0.1s;
}
.nuevo-juego-btn:active { transform: scale(0.97); box-shadow: 0 3px 10px rgba(37,99,235,0.25); }

/* ============================================================
   BOTTOM SHEET — genérico
   ============================================================ */

.sheet-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 90;
  opacity: 0; transition: opacity 0.3s;
  backdrop-filter: blur(3px);
}
.sheet-overlay.overlay-open { opacity: 1; }

.bottom-sheet {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--surface);
  border-radius: 24px 24px 0 0;
  padding: 12px 20px 32px;
  z-index: 100;
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.32,0.72,0,1);
  max-height: 85dvh;
  overflow-y: auto;
}
.bottom-sheet.sheet-open { transform: translateY(0); }

.sheet-handle {
  width: 40px; height: 4px;
  background: var(--border);
  border-radius: 2px;
  margin: 0 auto 16px;
}

.sheet-title {
  font-size: 1.2rem; font-weight: 900;
  color: var(--text); text-align: center;
  margin-bottom: 6px;
}

.sheet-sub {
  font-size: 0.85rem; color: var(--text-dim);
  text-align: center; margin-bottom: 20px; font-weight: 600;
}

.sheet-close-btn {
  width: 100%; margin-top: 12px;
  padding: 13px; border-radius: 12px;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  font-size: 0.9rem; font-weight: 700;
  color: var(--text-dim); cursor: pointer;
  font-family: 'Nunito', sans-serif;
}

/* ============================================================
   SHEET — Nuevo Juego (dificultad)
   ============================================================ */

.diff-list { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }

.diff-list-item {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 16px;
  background: var(--surface2);
  border: 2px solid var(--border); border-radius: 14px;
  cursor: pointer; text-align: left;
  font-family: 'Nunito', sans-serif;
  transition: border-color 0.15s, transform 0.1s;
}
.diff-list-item:active { transform: scale(0.98); }
.diff-list-item.active-diff { border-color: var(--p1); background: var(--highlight); }

.diff-emoji { font-size: 1.6rem; }
.diff-list-info { flex: 1; }
.diff-list-name { display: block; font-size: 1rem; font-weight: 800; color: var(--text); }
.diff-list-desc { display: block; font-size: 0.75rem; color: var(--text-dim); font-weight: 600; margin-top: 1px; }
.diff-list-arrow { font-size: 1.3rem; color: var(--text-dim); }

/* ============================================================
   SHEET — Ajustes
   ============================================================ */

.settings-list { display: flex; flex-direction: column; gap: 2px; margin-top: 8px; }

.settings-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 4px;
  border-bottom: 1px solid var(--border);
}

.settings-label { font-size: 0.95rem; font-weight: 700; color: var(--text); }

.toggle-btn {
  padding: 6px 18px;
  border-radius: 20px; border: 2px solid var(--border);
  background: var(--surface2);
  font-size: 0.8rem; font-weight: 800;
  color: var(--text-dim); cursor: pointer;
  font-family: 'Nunito', sans-serif;
  transition: background 0.15s, border-color 0.15s;
}
.toggle-btn.active {
  background: var(--p1); border-color: var(--p1); color: white;
}

.settings-action-btn {
  padding: 7px 16px;
  background: var(--surface2); border: 1.5px solid var(--border);
  border-radius: 10px; font-size: 0.82rem; font-weight: 700;
  color: var(--text); cursor: pointer; font-family: 'Nunito', sans-serif;
}

.settings-theme-pills { display: flex; gap: 6px; }

.theme-pill {
  width: 36px; height: 36px;
  border: 2px solid var(--border); border-radius: 10px;
  background: var(--surface2); font-size: 1rem;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: border-color 0.15s;
}
.theme-pill:active { transform: scale(0.92); }

/* ============================================================
   SHEET — Compartir / Invitar
   ============================================================ */

.share-code-big {
  font-size: 2.8rem; font-weight: 900;
  color: var(--p1); letter-spacing: 10px;
  text-align: center; margin: 12px 0 8px;
}

.share-hint {
  font-size: 0.8rem; color: var(--text-dim);
  text-align: center; margin-bottom: 20px; font-weight: 600;
  line-height: 1.4;
}

.share-actions { display: flex; flex-direction: column; gap: 10px; }

.share-btn-wa {
  width: 100%; padding: 15px;
  background: #25D366; color: white;
  border: none; border-radius: 14px;
  font-size: 1rem; font-weight: 800; cursor: pointer;
  font-family: 'Nunito', sans-serif;
}
.share-btn-copy {
  width: 100%; padding: 15px;
  background: var(--surface2);
  border: 1.5px solid var(--border); border-radius: 14px;
  font-size: 1rem; font-weight: 800; cursor: pointer;
  color: var(--text); font-family: 'Nunito', sans-serif;
}

/* Animación de espera */
.waiting-animation {
  display: flex; flex-direction: column;
  align-items: center; gap: 16px;
  padding: 20px 0;
}

.waiting-dots { display: flex; gap: 8px; }
.waiting-dots span {
  width: 10px; height: 10px;
  background: var(--p1); border-radius: 50%;
  animation: dotPulse 1.2s ease infinite;
}
.waiting-dots span:nth-child(2) { animation-delay: 0.2s; }
.waiting-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes dotPulse {
  0%,100% { opacity: 0.3; transform: scale(0.85); }
  50%      { opacity: 1;   transform: scale(1.1); }
}

.waiting-text { font-size: 0.9rem; color: var(--text-dim); font-weight: 700; text-align: center; }
.waiting-code {
  font-size: 2rem; font-weight: 900; color: var(--p1);
  letter-spacing: 8px;
}

/* ============================================================
   PERFIL
   ============================================================ */

.profile-header {
  display: flex; align-items: center; gap: 16px;
  padding: 24px 0 20px;
}

.profile-avatar {
  width: 64px; height: 64px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--p1), var(--p2));
  border-radius: 20px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem; font-weight: 900; color: white;
  box-shadow: 0 4px 16px rgba(37,99,235,0.25);
}

.profile-name-input {
  font-size: 1.2rem; font-weight: 800;
  color: var(--text); background: transparent;
  border: none; border-bottom: 2px solid var(--border);
  padding: 4px 0; width: 100%;
  font-family: 'Nunito', sans-serif;
}
.profile-name-input:focus { outline: none; border-color: var(--p1); }
.profile-name-input::placeholder { color: var(--text-dim); font-weight: 600; }

.profile-sub { font-size: 0.78rem; color: var(--text-dim); font-weight: 600; margin-top: 4px; }

/* Stats grid */
.stats-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 10px; margin-bottom: 24px;
}

.stat-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 14px; padding: 16px 12px;
  text-align: center;
  box-shadow: var(--shadow);
}

.stat-val   { font-size: 1.6rem; font-weight: 900; color: var(--p1); display: block; }
.stat-label { font-size: 0.72rem; color: var(--text-dim); font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; margin-top: 4px; display: block; }

/* Tema en perfil */
.profile-section { margin-bottom: 24px; }

.theme-options { display: flex; gap: 10px; }

.theme-opt {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; gap: 6px;
  padding: 12px 8px;
  background: var(--surface);
  border: 2px solid var(--border); border-radius: 14px;
  cursor: pointer; font-size: 0.78rem; font-weight: 700;
  color: var(--text-dim); font-family: 'Nunito', sans-serif;
}
.theme-opt.active { border-color: var(--p1); color: var(--p1); }

.theme-preview {
  width: 32px; height: 20px; border-radius: 6px;
}
.light-preview { background: linear-gradient(135deg, #f4f6fb, #ffffff); border: 1px solid #dde2ef; }
.dark-preview  { background: linear-gradient(135deg, #0f1117, #1c2333); }
.ocean-preview { background: linear-gradient(135deg, #0a1628, #102040); }

/* Historial */
.history-list { display: flex; flex-direction: column; gap: 6px; }
.history-empty { font-size: 0.85rem; color: var(--text-dim); text-align: center; padding: 20px; font-weight: 600; }

.history-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 14px;
  background: var(--surface);
  border: 1.5px solid var(--border); border-radius: 12px;
}
.history-left { display: flex; align-items: center; gap: 10px; }
.history-right { display: flex; align-items: center; gap: 12px; }

.history-diff {
  font-size: 0.72rem; font-weight: 800;
  padding: 3px 8px; border-radius: 20px;
  text-transform: capitalize;
}
.history-diff.easy { background: #dcfce7; color: #16a34a; }
.history-diff.hard { background: #fee2e2; color: #dc2626; }

.history-date  { font-size: 0.78rem; color: var(--text-dim); font-weight: 600; }
.history-time  { font-size: 0.85rem; font-weight: 800; color: var(--text); }
.history-errors { font-size: 0.78rem; color: var(--text-dim); font-weight: 700; }

/* ============================================================
   PLACEHOLDER (Batalla)
   ============================================================ */

.placeholder-view {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  height: 100%; text-align: center;
  padding: 40px 24px;
  gap: 16px;
}
.placeholder-icon { font-size: 4rem; }
.placeholder-view h2 { font-size: 1.5rem; font-weight: 900; color: var(--text); }
.placeholder-view p { font-size: 0.9rem; color: var(--text-dim); line-height: 1.6; max-width: 280px; }
.coming-soon-badge {
  padding: 8px 20px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 20px;
  font-size: 0.85rem; font-weight: 800; color: var(--text-dim);
}

/* ============================================================
   JUEGO — ajustes específicos
   ============================================================ */

.icon-btn {
  width: 38px; height: 38px;
  background: var(--surface); border: 1.5px solid var(--border);
  border-radius: 10px; font-size: 1.1rem;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow); -webkit-tap-highlight-color: transparent;
}

.header-actions { display: flex; align-items: center; gap: 6px; }

/* J2 en espera — tenue */
.p2-waiting { opacity: 0.4; }

/* Toast de error flotante */
.error-toast {
  position: fixed; bottom: 24px; left: 50%;
  transform: translateX(-50%);
  background: var(--error); color: white;
  padding: 10px 20px; border-radius: 20px;
  font-size: 0.9rem; font-weight: 700; z-index: 300;
  font-family: 'Nunito', sans-serif;
  animation: toastIn 0.3s ease;
  white-space: nowrap;
}

/* Spinner */
.spinner {
  display: inline-block; width: 18px; height: 18px;
  border: 2.5px solid rgba(255,255,255,0.4);
  border-top-color: white; border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================================
   BATALLA — PANTALLAS
   ============================================================ */

.battle-screen {
  width: 100dvw;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--bg);
  padding: 16px 16px 32px;
  overflow-y: auto;
}

.battle-screen.hidden { display: none; }

.battle-back-btn {
  align-self: flex-start;
  padding: 8px 14px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 20px;
  font-size: 0.85rem; font-weight: 700;
  color: var(--text-dim); cursor: pointer;
  font-family: 'Nunito', sans-serif;
  margin-bottom: 20px;
}

/* ============================================================
   BATALLA — PANTALLA DE BÚSQUEDA
   ============================================================ */

.battle-search-content {
  width: 100%; max-width: 400px;
  display: flex; flex-direction: column;
  align-items: center; gap: 20px;
}

.battle-logo { font-size: 3.5rem; text-align: center; }

.battle-title {
  font-size: 2rem; font-weight: 900;
  color: var(--text); text-align: center;
  margin-top: -8px;
}

.battle-subtitle {
  font-size: 0.85rem; color: var(--text-dim);
  text-align: center; font-weight: 600;
  margin-top: -12px;
}

.battle-diff-selector { width: 100%; }

.battle-diff-pills {
  display: flex; gap: 8px; margin-top: 8px;
}

.battle-diff-pill {
  flex: 1; padding: 10px;
  background: var(--surface);
  border: 2px solid var(--border); border-radius: 12px;
  font-size: 0.9rem; font-weight: 800;
  color: var(--text-dim); cursor: pointer;
  font-family: 'Nunito', sans-serif;
  transition: all 0.15s;
}
.battle-diff-pill.active {
  border-color: #e02454;
  background: rgba(224,36,84,0.08);
  color: #e02454;
}

.battle-actions {
  width: 100%;
  display: flex; flex-direction: column; gap: 10px;
}

.battle-main-btn {
  width: 100%; display: flex; align-items: center; gap: 14px;
  padding: 16px; border: none; border-radius: 16px;
  cursor: pointer; text-align: left;
  font-family: 'Nunito', sans-serif;
  transition: transform 0.1s;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}
.battle-main-btn:active { transform: scale(0.97); }

.primary-battle-btn {
  background: linear-gradient(135deg, #e02454, #b91c49);
  color: white;
}
.secondary-battle-btn {
  background: var(--surface);
  border: 1.5px solid var(--border) !important;
  color: var(--text);
}

.battle-btn-icon { font-size: 1.8rem; flex-shrink: 0; }
.battle-btn-text { display: flex; flex-direction: column; gap: 2px; }
.battle-btn-title { font-size: 1rem; font-weight: 800; }
.battle-btn-sub   { font-size: 0.75rem; opacity: 0.8; font-weight: 600; }

.battle-join-section { width: 100%; }
.battle-join-row { display: flex; gap: 8px; margin-top: 8px; }

/* ============================================================
   BATALLA — MATCHMAKING ANIMATION
   ============================================================ */

.battle-waiting-content {
  width: 100%; max-width: 360px;
  display: flex; flex-direction: column;
  align-items: center; gap: 20px;
  padding-top: 20px;
}

.battle-waiting-title {
  font-size: 1.4rem; font-weight: 900;
  color: var(--text); text-align: center;
}

.matchmaking-animation {
  display: flex; align-items: center; gap: 20px;
  padding: 24px;
  background: var(--surface);
  border: 1.5px solid var(--border); border-radius: 20px;
  width: 100%;
  box-shadow: 0 4px 16px rgba(0,0,0,0.07);
}

.mm-player {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; gap: 8px;
}

.mm-avatar {
  width: 56px; height: 56px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; font-weight: 900; color: white;
}

.you-avatar  { background: linear-gradient(135deg, #2563eb, #1d4ed8); }
.opp-avatar-loading {
  background: var(--surface2);
  border: 2px dashed var(--border);
}

.mm-searching-dots {
  display: flex; gap: 5px;
}
.mm-searching-dots span {
  width: 8px; height: 8px;
  background: var(--text-dim); border-radius: 50%;
  animation: dotPulse 1.2s ease infinite;
}
.mm-searching-dots span:nth-child(2) { animation-delay: 0.2s; }
.mm-searching-dots span:nth-child(3) { animation-delay: 0.4s; }

.mm-name { font-size: 0.82rem; font-weight: 700; color: var(--text-dim); }

.mm-vs {
  font-size: 1.2rem; font-weight: 900;
  color: #e02454; flex-shrink: 0;
}

.waiting-hint {
  font-size: 0.8rem; color: var(--text-dim);
  text-align: center; font-weight: 600;
}

/* Sala privada */
.private-code-display {
  font-size: 2.5rem; font-weight: 900;
  color: #e02454; letter-spacing: 8px;
  text-align: center;
  background: var(--surface);
  border: 2px solid #e02454;
  border-radius: 16px; padding: 16px 24px;
  width: 100%; max-width: 320px;
}

.waiting-dots-row {
  display: flex; gap: 8px; margin-top: 8px;
}
.waiting-dots-row span {
  width: 10px; height: 10px;
  background: #e02454; border-radius: 50%;
  animation: dotPulse 1.2s ease infinite;
}
.waiting-dots-row span:nth-child(2) { animation-delay: 0.2s; }
.waiting-dots-row span:nth-child(3) { animation-delay: 0.4s; }

/* ============================================================
   BATALLA — PANTALLA DE JUEGO
   ============================================================ */

#screen-battle {
  padding: 8px;
  gap: clamp(4px, 1dvh, 10px);
  justify-content: flex-start;
}

.battle-header {
  width: 100%;
  max-width: calc(var(--cell-size) * 9 + 6px);
  display: flex; align-items: center; justify-content: space-between;
}

.battle-timer-block {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
}

.battle-timer {
  font-size: 1.2rem; font-weight: 900;
  color: var(--text); letter-spacing: 2px;
  font-variant-numeric: tabular-nums;
}

.battle-penalty {
  font-size: 0.78rem; font-weight: 800;
  color: #ef4444; letter-spacing: 1px;
}

.battle-penalty.penalty-flash {
  animation: penaltyFlash 1s ease;
}

@keyframes penaltyFlash {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 1; transform: scale(1.3); color: #ef4444; }
}

.battle-header-right {
  display: flex; align-items: center; gap: 8px;
}

/* Puntos de errores */
.battle-errors-display {
  display: flex; gap: 5px; align-items: center;
}

.error-dot {
  font-size: 1rem; color: #e02454;
  transition: opacity 0.3s, transform 0.3s;
}

.error-dot-used {
  opacity: 0.2;
  transform: scale(0.8);
}

/* ============================================================
   BARRA DE PROGRESO
   ============================================================ */

.battle-progress-bar-section {
  width: 100%;
  max-width: calc(var(--cell-size) * 9 + 6px);
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 14px;
  padding: 10px 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.battle-progress-row {
  display: flex; align-items: center; gap: 8px; margin-bottom: 4px;
}

.progress-label {
  font-size: 0.7rem; font-weight: 800;
  white-space: nowrap;
  flex-shrink: 0; max-width: 60px;
  overflow: hidden; text-overflow: ellipsis;
}

.you-label { color: #2563eb; }
.opp-label { color: #e02454; text-align: right; }

.progress-track {
  flex: 1; height: 10px;
  background: var(--surface2);
  border-radius: 5px; overflow: hidden;
  position: relative;
  border: 1px solid var(--border);
}

.progress-fill {
  position: absolute; top: 0; height: 100%;
  border-radius: 5px;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  width: 0%;
}

.your-fill {
  left: 0;
  background: linear-gradient(90deg, #2563eb, #60a5fa);
}

.opp-fill {
  right: 0;
  background: linear-gradient(270deg, #e02454, #f87171);
}

.battle-progress-nums {
  display: flex; align-items: center; gap: 4px;
  font-size: 0.72rem; font-weight: 700; color: var(--text-dim);
  justify-content: center;
}

.progress-total { color: var(--text-dim); }
.progress-sep   { color: var(--border-strong); }

/* ============================================================
   RESULTADO DE BATALLA
   ============================================================ */

.battle-result {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex; align-items: center; justify-content: center;
  z-index: 200;
  backdrop-filter: blur(6px);
}

.battle-result.hidden { display: none; }

#battle-confetti {
  position: absolute; inset: 0; pointer-events: none;
}

.result-card {
  position: relative; z-index: 1;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 24px;
  padding: 36px 24px;
  text-align: center;
  width: min(340px, 92vw);
  box-shadow: 0 8px 40px rgba(0,0,0,0.25);
  animation: winCardPop 0.5s cubic-bezier(0.175,0.885,0.32,1.275);
}

.result-emoji {
  font-size: 3.5rem; margin-bottom: 8px;
  animation: winSpin 0.6s ease 0.3s both;
}

.result-card h2 {
  font-size: 1.5rem; font-weight: 900; color: var(--text);
  margin-bottom: 8px;
}

.result-sub {
  font-size: 0.85rem; color: var(--text-dim); font-weight: 600;
  margin-bottom: 20px; line-height: 1.4;
}

.result-stats {
  display: flex; align-items: center; justify-content: center;
  gap: 16px; margin-bottom: 24px;
  background: var(--surface2); border-radius: 14px; padding: 14px;
}

.result-stat { display: flex; flex-direction: column; align-items: center; gap: 3px; }
.result-stat-val   { font-size: 1.4rem; font-weight: 900; color: #e02454; }
.result-stat-label { font-size: 0.65rem; color: var(--text-dim); font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; }

.result-actions { display: flex; flex-direction: column; gap: 8px; }

.result-btn {
  width: 100%; padding: 14px;
  border: none; border-radius: 14px;
  font-size: 1rem; font-weight: 800;
  cursor: pointer; font-family: 'Nunito', sans-serif;
}

.result-btn-secondary {
  background: var(--surface2);
  border: 1.5px solid var(--border) !important;
  color: var(--text-dim);
}

/* Colores batalla en tablero */
.cell.battle-correct { animation: correctPop 0.28s cubic-bezier(0.175,0.885,0.32,1.275); }
.cell.battle-error   { animation: errorShake 0.3s ease; color: #ef4444 !important; }