/* ============================================================
   Daily Sudoku — "paper & persimmon" puzzle-arcade
   ============================================================ */
:root {
  --paper: #f3ecdd;
  --paper-deep: #eadfc8;
  --card: #fffdf6;
  --ink: #26221a;
  --ink-soft: #6b6252;
  --line: #cfc4ab;
  --accent: #e8543f;        /* persimmon */
  --accent-deep: #c23c2a;
  --teal: #2b7a6c;          /* pen / notes */
  --gold: #e3a51f;
  --heart: #e0454f;
  --shadow: 0 4px 0 rgba(38, 34, 26, .18);
  --shadow-lift: 0 8px 24px rgba(38, 34, 26, .16);
  --radius: 14px;
  --font-display: 'Bungee', cursive;
  --font-body: 'Nunito', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

/* display rules below would otherwise override the hidden attribute */
[hidden] { display: none !important; }

html, body { height: 100%; }

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
  min-height: 100dvh;
}

/* --- backdrop --- */
.bg-texture {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
}
.bg-digits {
  position: fixed; inset: -10%; z-index: 0; pointer-events: none;
  opacity: .028; font-family: var(--font-display); color: var(--ink);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='340' height='340'%3E%3Cg fill='%2326221a' font-family='sans-serif' font-weight='900'%3E%3Ctext x='20' y='80' font-size='72' transform='rotate(-12 40 60)'%3E7%3C/text%3E%3Ctext x='210' y='120' font-size='54' transform='rotate(9 230 100)'%3E3%3C/text%3E%3Ctext x='110' y='230' font-size='88' transform='rotate(-6 140 200)'%3E5%3C/text%3E%3Ctext x='250' y='300' font-size='60' transform='rotate(14 270 280)'%3E9%3C/text%3E%3Ctext x='30' y='320' font-size='48' transform='rotate(-18 50 300)'%3E1%3C/text%3E%3C/g%3E%3C/svg%3E");
}

/* --- screens --- */
.screen { display: none; position: relative; z-index: 1; }
.screen.active { display: block; }

/* ============================================================
   MENU
   ============================================================ */
#screen-menu {
  max-width: 640px; margin: 0 auto; padding: 32px 20px 60px;
}

.menu-header { text-align: center; margin-bottom: 30px; }

.logo {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 6vw, 2.6rem);
  display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 8px;
  line-height: 1;
}
.logo-tile {
  display: inline-grid; place-items: center;
  width: 1.5em; height: 1.5em;
  background: var(--ink); color: var(--paper);
  border-radius: 10px;
  box-shadow: var(--shadow);
  animation: tile-drop .6s cubic-bezier(.2, 1.6, .4, 1) backwards;
}
.logo-tile.alt { background: var(--accent); color: #fff; }
.logo-tile:nth-child(1) { animation-delay: .05s; transform: rotate(-4deg); }
.logo-tile:nth-child(2) { animation-delay: .12s; transform: rotate(3deg); }
.logo-tile:nth-child(3) { animation-delay: .19s; transform: rotate(-2deg); }
.logo-tile:nth-child(4) { animation-delay: .26s; transform: rotate(5deg); }
.logo-tile:nth-child(5) { animation-delay: .33s; transform: rotate(-3deg); }
.logo-word {
  width: 100%; text-align: center; margin-top: 6px;
  color: var(--accent); letter-spacing: .12em;
  text-shadow: 2px 2px 0 rgba(38,34,26,.15);
  animation: tile-drop .6s .4s cubic-bezier(.2,1.6,.4,1) backwards;
}
@keyframes tile-drop {
  from { opacity: 0; transform: translateY(-30px) scale(.6) rotate(10deg); }
}
.tagline { margin-top: 10px; color: var(--ink-soft); font-weight: 600; font-style: italic; }

.menu-cards { display: flex; flex-direction: column; gap: 18px; }

.card {
  background: var(--card);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  text-align: left;
  font-family: var(--font-body);
  color: var(--ink);
  animation: card-in .5s cubic-bezier(.2,1.4,.4,1) backwards;
}
.menu-cards > *:nth-child(1) { animation-delay: .45s; }
.menu-cards > *:nth-child(2) { animation-delay: .55s; }
.menu-cards > *:nth-child(3) { animation-delay: .65s; }
@keyframes card-in { from { opacity: 0; transform: translateY(24px); } }

.card-kicker {
  font-family: var(--font-display);
  font-size: .8rem; letter-spacing: .08em;
  color: var(--accent);
}

/* daily card */
.card-daily {
  cursor: pointer;
  background: linear-gradient(135deg, var(--ink) 0%, #3a3325 100%);
  color: var(--paper);
  border-color: var(--ink);
  transition: transform .15s, box-shadow .15s;
  position: relative; overflow: hidden;
}
.card-daily::after {
  content: ''; position: absolute; top: -40%; right: -10%;
  width: 180px; height: 180px; border-radius: 50%;
  background: radial-gradient(circle, rgba(232,84,63,.35), transparent 70%);
}
.card-daily:hover { transform: translateY(-3px); box-shadow: var(--shadow-lift); }
.card-daily:active { transform: translateY(1px); }
.card-daily .card-kicker { color: var(--gold); }
.card-daily-top { display: flex; justify-content: space-between; align-items: baseline; }
.daily-date { font-weight: 800; opacity: .8; font-size: .9rem; }
.card-daily-mid { display: flex; align-items: center; gap: 12px; margin: 14px 0 8px; }
.streak-flame { font-size: 2.2rem; filter: grayscale(1) opacity(.45); }
.streak-flame.lit { filter: none; animation: flame-bob 1.2s ease-in-out infinite; }
@keyframes flame-bob { 50% { transform: scale(1.12) rotate(-4deg); } }
.streak-count b { font-family: var(--font-display); font-size: 1.8rem; color: var(--gold); }
.streak-count small { display: block; opacity: .75; font-weight: 700; }
.daily-status { font-size: .85rem; opacity: .85; font-weight: 600; }
.daily-status.done { color: #8fd6a7; }

/* difficulty buttons */
.difficulty-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 12px; }
.diff-btn {
  font-family: var(--font-body); font-weight: 800; font-size: .9rem;
  padding: 12px 4px; cursor: pointer;
  border: 2px solid var(--ink); border-radius: 10px;
  background: var(--paper); color: var(--ink);
  box-shadow: 0 3px 0 rgba(38,34,26,.2);
  transition: transform .12s, background .12s, color .12s;
}
.diff-btn:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }
.diff-btn:active { transform: translateY(1px); box-shadow: none; }
.highscore-line { margin-top: 12px; font-size: .85rem; color: var(--ink-soft); font-weight: 700; }

/* multiplayer card */
.card-note { margin: 8px 0 14px; color: var(--ink-soft); font-weight: 600; font-size: .92rem; }
.multi-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.btn {
  font-family: var(--font-body); font-weight: 800; font-size: .95rem;
  padding: 12px 22px; cursor: pointer;
  border-radius: 10px; border: 2px solid var(--ink);
  transition: transform .12s, filter .12s;
}
.btn:active { transform: translateY(2px); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 3px 0 var(--accent-deep); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { background: transparent; color: var(--ink); box-shadow: 0 3px 0 rgba(38,34,26,.2); }
.btn-ghost:hover { background: var(--paper-deep); }

.menu-footer { display: flex; justify-content: center; gap: 14px; margin-top: 30px; }
.icon-toggle {
  width: 48px; height: 48px; font-size: 1.3rem; cursor: pointer;
  border: 2px solid var(--ink); border-radius: 50%;
  background: var(--card); box-shadow: var(--shadow);
  transition: transform .15s;
}
.icon-toggle:hover { transform: scale(1.1) rotate(-6deg); }
.icon-toggle.off { opacity: .4; filter: grayscale(1); }

/* SEO content */
.seo-content { margin-top: 56px; border-top: 2px dashed var(--line); padding-top: 32px; color: var(--ink-soft); }
.seo-content h2 { font-family: var(--font-display); font-size: 1.05rem; color: var(--ink); margin: 22px 0 8px; }
.seo-content p { line-height: 1.65; font-weight: 600; font-size: .93rem; }
.seo-content strong { color: var(--accent-deep); }

/* ============================================================
   GAME SCREEN
   ============================================================ */
#screen-game {
  display: none;
  max-width: 560px; margin: 0 auto;
  padding: 14px 12px 40px;
  flex-direction: column; gap: 10px;
}
#screen-game.active {
  display: flex;
}


.game-top { display: flex; align-items: center; gap: 10px; }
.btn-back {
  width: 40px; height: 40px; font-size: 1.2rem; cursor: pointer;
  border: 2px solid var(--ink); border-radius: 10px;
  background: var(--card); box-shadow: 0 3px 0 rgba(38,34,26,.2);
  font-weight: 900;
}
.btn-back:active { transform: translateY(2px); box-shadow: none; }

.hearts { display: flex; gap: 3px; font-size: 1.5rem; color: var(--heart); }
.heart { transition: transform .2s, opacity .3s, filter .3s; }
.heart.lost { opacity: .25; filter: grayscale(1); transform: scale(.8); }
.heart.breaking { animation: heart-break .6s ease forwards; }
@keyframes heart-break {
  20% { transform: scale(1.4); }
  50% { transform: scale(.9) rotate(-12deg); }
  100% { transform: scale(.8) rotate(8deg); opacity: .25; filter: grayscale(1); }
}

.game-mode-label {
  flex: 1; text-align: center;
  font-family: var(--font-display); font-size: .85rem; color: var(--ink-soft);
}

.timer-wrap { display: flex; align-items: center; gap: 6px; }
.timer {
  font-weight: 900; font-variant-numeric: tabular-nums;
  font-size: 1.05rem; min-width: 56px; text-align: right;
}
.timer.frozen { color: #2a8fd0; animation: freeze-pulse 1s ease-in-out infinite; }
@keyframes freeze-pulse { 50% { opacity: .5; } }
.btn-pause {
  width: 34px; height: 34px; cursor: pointer; font-size: .9rem;
  border: 2px solid var(--ink); border-radius: 8px;
  background: var(--card);
}

.score-bar { display: flex; align-items: center; gap: 10px; }
.score-chip {
  display: flex; align-items: baseline; gap: 8px;
  background: var(--ink); color: var(--gold);
  padding: 6px 14px; border-radius: 999px;
  box-shadow: var(--shadow);
}
.score-label { font-size: .7rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; opacity: .7; }
.score-value { font-family: var(--font-display); font-size: 1.1rem; }
.score-value.bump { animation: score-bump .4s cubic-bezier(.2,1.8,.4,1); }
@keyframes score-bump { 40% { transform: scale(1.35); color: #fff; } }

.combo-chip {
  font-weight: 900; font-size: .85rem; color: var(--accent-deep);
  opacity: 0; transition: opacity .3s, transform .3s;
  transform: scale(.8);
}
.combo-chip.on { opacity: 1; transform: scale(1); animation: combo-wiggle .4s; }
@keyframes combo-wiggle { 30% { transform: scale(1.2) rotate(-4deg); } 60% { transform: scale(1.05) rotate(3deg); } }

.multi-presence {
  margin-left: auto; display: flex; align-items: center; gap: 6px;
  font-size: .78rem; font-weight: 800; color: var(--teal);
}
.presence-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--teal); animation: freeze-pulse 1.6s infinite; }

.lobby-code-display {
  text-align: center;
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--accent-deep);
  margin: -4px 0 10px;
}

/* --- board --- */
.board-wrap { position: relative; }
.board {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  grid-template-rows: repeat(9, 1fr);
  aspect-ratio: 1;
  width: 100%;
  background: var(--ink);
  border: 3px solid var(--ink);
  border-radius: 12px;
  overflow: hidden;
  gap: 1px;
  box-shadow: var(--shadow-lift);
}
.cell {
  position: relative;
  background: var(--card);
  display: grid; place-items: center;
  font-weight: 800;
  font-size: clamp(1rem, 4.6vw, 1.7rem);
  cursor: pointer;
  user-select: none;
  transition: background .12s;
}
/* thick 3x3 separators */
.cell.bx-r { border-right: 2.5px solid var(--ink); }
.cell.bx-b { border-bottom: 2.5px solid var(--ink); }

.cell.given { color: var(--ink); background: #f7f1e2; }
.cell.user { color: var(--accent-deep); }
.cell:hover { background: #f0e7d0; }
.cell.peer { background: #efe6cd; }
.cell.selected { background: #ffd9c9 !important; }
.cell.same-num { background: #ffe1a8 !important; }
.cell.same-num.given, .cell.same-num.user { font-weight: 900; }
.cell.beacon { background: #cdeee6 !important; animation: beacon-blink 1s ease-in-out infinite; }
@keyframes beacon-blink { 50% { background: #a5ded1 !important; } }
.cell.remote-cursor { outline: 3px solid var(--teal); outline-offset: -3px; border-radius: 4px; }

.cell.pop { animation: cell-pop .35s cubic-bezier(.2,1.8,.4,1); }
@keyframes cell-pop { 40% { transform: scale(1.25); } }
.cell.wrong { animation: cell-wrong .5s; }
@keyframes cell-wrong {
  0%, 100% { background: var(--card); }
  20%, 60% { background: #ffb9b0; transform: translateX(-3px); }
  40%, 80% { background: #ffb9b0; transform: translateX(3px); }
}
.cell.celebrate { animation: cell-celebrate .7s cubic-bezier(.2,1.4,.4,1); }
@keyframes cell-celebrate {
  30% { background: var(--gold); color: #fff; transform: scale(1.12); }
  60% { background: #ffe1a8; }
}
.cell.reveal-flash { animation: reveal-flash .8s; }
@keyframes reveal-flash { 30% { background: #cdeee6; transform: scale(1.2); } }

/* pen notes */
.notes {
  position: absolute; inset: 2px;
  display: grid; grid-template-columns: repeat(3, 1fr); grid-template-rows: repeat(3, 1fr);
  pointer-events: none;
}
.notes span {
  font-size: clamp(.42rem, 1.6vw, .62rem);
  font-weight: 800; color: var(--teal);
  display: grid; place-items: center; line-height: 1;
}
.notes span.hl { color: var(--accent-deep); background: #ffe1a8; border-radius: 3px; }

/* board overlay (pause / countdown) */
.board-overlay {
  position: absolute; inset: 0; z-index: 5;
  background: rgba(243, 236, 221, .93);
  border-radius: 12px;
  display: grid; place-items: center;
}
.overlay-inner { text-align: center; font-family: var(--font-display); font-size: 1.4rem; }
.overlay-inner .big { font-size: 2.4rem; color: var(--accent); display: block; margin-bottom: 8px; }

/* --- powers --- */
.powers-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.power-btn[aria-pressed="true"] {
  background: var(--teal) !important;
  color: #fff !important;
  border-color: var(--teal) !important;
}
.power-btn[aria-pressed="true"] .p-cost {
  background: #fff !important;
  color: var(--teal) !important;
}
.power-btn {
  position: relative;
  border: 2px solid var(--ink); border-radius: 12px;
  background: var(--card); cursor: pointer;
  padding: 8px 6px 6px;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  box-shadow: 0 3px 0 rgba(38,34,26,.2);
  transition: transform .15s, background .15s;
  font-family: var(--font-body);
}
.power-btn:hover:not(:disabled) { transform: translateY(-2px); background: #fff8e8; }
.power-btn:active:not(:disabled) { transform: translateY(1px); }
.power-btn:disabled { opacity: .45; cursor: not-allowed; filter: grayscale(.7); }
.power-btn .p-ico { font-size: 1.4rem; }
.power-btn .p-name { font-weight: 900; font-size: .68rem; letter-spacing: .02em; }
.power-btn .p-cost {
  font-weight: 900; font-size: .7rem; color: var(--gold);
  background: var(--ink); border-radius: 999px; padding: 1px 9px;
}
.power-btn.affordable .p-cost { animation: cost-glow 2s ease-in-out infinite; }
@keyframes cost-glow { 50% { box-shadow: 0 0 10px var(--gold); } }
.power-btn.used-flash { animation: power-used .5s; }
@keyframes power-used { 40% { transform: scale(1.15); background: var(--gold); } }
.power-btn .p-active-badge {
  position: absolute; top: -8px; right: -6px;
  background: var(--teal); color: #fff; font-size: .62rem; font-weight: 900;
  border-radius: 999px; padding: 2px 7px; border: 2px solid var(--card);
}

/* --- controls --- */
.controls { display: flex; flex-direction: column; gap: 10px; }
.tool-row { display: flex; gap: 8px; justify-content: center; }
.tool-btn {
  display: flex; align-items: center; gap: 7px;
  border: 2px solid var(--ink); border-radius: 10px;
  padding: 8px 18px; cursor: pointer;
  background: var(--card); font-family: var(--font-body); font-weight: 800;
  box-shadow: 0 3px 0 rgba(38,34,26,.2);
  transition: background .12s, color .12s, transform .12s;
}
.tool-btn:active { transform: translateY(2px); box-shadow: none; }
.tool-btn .tool-ico { font-size: 1.1rem; }
.tool-btn[aria-pressed="true"] { background: var(--teal); color: #fff; border-color: var(--teal); }

.numpad { display: grid; grid-template-columns: repeat(9, 1fr); gap: 5px; }
.num-btn {
  position: relative;
  border: 2px solid var(--ink); border-radius: 10px;
  background: var(--card); cursor: pointer;
  padding: 8px 0 4px;
  display: flex; flex-direction: column; align-items: center;
  font-family: var(--font-body);
  box-shadow: 0 3px 0 rgba(38,34,26,.2);
  transition: transform .12s, background .12s;
}
.num-btn .n-digit { font-weight: 900; font-size: clamp(1rem, 4vw, 1.4rem); line-height: 1; }
.num-btn .n-count { font-size: .62rem; font-weight: 800; color: var(--ink-soft); margin-top: 2px; }
.num-btn:hover:not(:disabled) { transform: translateY(-2px); background: #fff8e8; }
.num-btn.active {
  background: var(--accent); color: #fff; border-color: var(--accent-deep);
  box-shadow: 0 3px 0 var(--accent-deep);
  transform: translateY(-3px);
}
.num-btn.active .n-count { color: rgba(255,255,255,.8); }
.num-btn:disabled { opacity: .3; cursor: not-allowed; transform: none; box-shadow: none; }
.num-btn.exhaust-flash { animation: exhaust .6s; }
@keyframes exhaust { 30% { transform: scale(1.2); background: var(--gold); } }

/* pen-mode tint on numpad */
.numpad.pen-mode .num-btn.active { background: var(--teal); border-color: var(--teal); box-shadow: 0 3px 0 #1d5a4f; }

/* ============================================================
   MODAL
   ============================================================ */
.modal {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(38, 34, 26, .55);
  display: grid; place-items: center;
  padding: 20px;
  backdrop-filter: blur(3px);
}
.modal-card {
  background: var(--card);
  border: 3px solid var(--ink);
  border-radius: 18px;
  padding: 28px 24px;
  max-width: 420px; width: 100%;
  max-height: 86dvh; overflow-y: auto; overflow-x: hidden;
  box-shadow: var(--shadow-lift);
  animation: modal-in .35s cubic-bezier(.2,1.5,.4,1);
  text-align: center;
}
@keyframes modal-in { from { opacity: 0; transform: translateY(30px) scale(.92); } }
.modal-card h2 { font-family: var(--font-display); font-size: 1.3rem; margin-bottom: 12px; }
.modal-card h2.win { color: var(--gold); }
.modal-card h2.lose { color: var(--heart); }
.modal-card p { color: var(--ink-soft); font-weight: 600; line-height: 1.5; margin-bottom: 10px; }
.modal-card .modal-actions { display: flex; gap: 10px; justify-content: center; margin-top: 18px; flex-wrap: wrap; }
.modal-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 16px 0; }
.mstat { background: var(--paper); border: 2px solid var(--line); border-radius: 10px; padding: 10px; }
.mstat b { font-family: var(--font-display); font-size: 1.15rem; display: block; color: var(--accent-deep); }
.mstat small { font-weight: 800; color: var(--ink-soft); font-size: .68rem; text-transform: uppercase; letter-spacing: .05em; }
.mstat.gold b { color: var(--gold); }
.new-record { font-family: var(--font-display); color: var(--gold); animation: combo-wiggle .6s infinite; }

.modal-input {
  width: 100%; padding: 12px; margin: 10px 0;
  border: 2px solid var(--ink); border-radius: 10px;
  font-family: var(--font-body); font-weight: 800; font-size: 1rem;
  background: var(--paper); color: var(--ink); text-align: center;
}
.modal-input:focus { outline: 3px solid var(--accent); }
.room-link-box {
  background: var(--paper); border: 2px dashed var(--ink);
  border-radius: 10px; padding: 12px; margin: 12px 0;
  font-weight: 800; font-size: .8rem; word-break: break-all;
  cursor: pointer; transition: background .15s;
}
.room-link-box:hover { background: var(--paper-deep); }

.how-list { text-align: left; margin: 12px 0; }
.how-list li { margin: 8px 0 8px 18px; font-weight: 600; color: var(--ink-soft); line-height: 1.45; font-size: .92rem; }
.how-list b { color: var(--ink); }

/* ============================================================
   TOASTS & FX
   ============================================================ */
.toast-layer {
  position: fixed; top: 18px; left: 50%; transform: translateX(-50%);
  z-index: 60; display: flex; flex-direction: column; align-items: center; gap: 8px;
  pointer-events: none; width: max-content; max-width: 92vw;
}
.toast {
  font-family: var(--font-display); font-size: 1rem;
  background: var(--ink); color: var(--gold);
  border-radius: 999px; padding: 10px 22px;
  box-shadow: var(--shadow-lift);
  animation: toast-in 2.2s cubic-bezier(.2,1.4,.4,1) forwards;
}
.toast.event { background: var(--accent); color: #fff; }
@keyframes toast-in {
  0% { opacity: 0; transform: translateY(-24px) scale(.8); }
  12%, 80% { opacity: 1; transform: translateY(0) scale(1); }
  100% { opacity: 0; transform: translateY(-14px) scale(.9); }
}

.float-points {
  position: fixed; z-index: 55; pointer-events: none;
  font-family: var(--font-display); font-size: 1.05rem; color: var(--gold);
  text-shadow: 1px 2px 0 rgba(38,34,26,.4);
  animation: float-up 1.1s ease-out forwards;
}
@keyframes float-up {
  0% { opacity: 0; transform: translateY(6px) scale(.7); }
  20% { opacity: 1; transform: translateY(-4px) scale(1.1); }
  100% { opacity: 0; transform: translateY(-52px) scale(1); }
}

#fx-canvas { position: fixed; inset: 0; z-index: 70; pointer-events: none; }

body.shake { animation: body-shake .45s; }
@keyframes body-shake {
  20% { transform: translate(-6px, 2px); }
  40% { transform: translate(5px, -2px); }
  60% { transform: translate(-4px, 1px); }
  80% { transform: translate(3px, -1px); }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 420px) {
  #screen-game { padding: 10px 8px 24px; }
  .power-btn .p-name { font-size: .6rem; }
  .tool-btn { padding: 7px 14px; }
}
@media (min-width: 700px) {
  #screen-game { padding-top: 28px; }
}

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

/* ============================================================
   POWER TOOLTIPS
   ============================================================ */
.power-btn::after {
  content: attr(data-desc);
  position: absolute; bottom: calc(100% + 12px); left: 50%;
  transform: translateX(-50%) translateY(4px);
  width: max-content; max-width: 210px;
  background: var(--ink); color: var(--card);
  font-size: .74rem; font-weight: 700; line-height: 1.4; text-align: center;
  padding: 8px 12px; border-radius: 10px;
  box-shadow: var(--shadow-lift);
  opacity: 0; pointer-events: none;
  transition: opacity .18s, transform .18s;
  z-index: 30;
}
.power-btn::before {
  content: '';
  position: absolute; bottom: calc(100% + 4px); left: 50%;
  transform: translateX(-50%);
  border: 8px solid transparent; border-top-color: var(--ink); border-bottom: 0;
  opacity: 0; transition: opacity .18s;
  z-index: 30;
}
.power-btn:hover::after, .power-btn:focus-visible::after,
.power-btn:hover::before, .power-btn:focus-visible::before {
  opacity: 1; transform: translateX(-50%) translateY(0);
}
.power-btn:hover::before, .power-btn:focus-visible::before { transform: translateX(-50%); }
/* keep edge tooltips on screen */
.powers-row .power-btn:first-child::after { left: 0; transform: translateX(0) translateY(4px); }
.powers-row .power-btn:first-child:hover::after, .powers-row .power-btn:first-child:focus-visible::after { transform: translateX(0) translateY(0); }
.powers-row .power-btn:last-child::after { left: auto; right: 0; transform: translateX(0) translateY(4px); }
.powers-row .power-btn:last-child:hover::after, .powers-row .power-btn:last-child:focus-visible::after { transform: translateX(0) translateY(0); }

/* ============================================================
   MULTIPLAYER LOBBY
   ============================================================ */
#screen-lobby { max-width: 560px; margin: 0 auto; padding: 32px 16px 60px; }
.lobby-card {
  background: var(--card); border: 2px solid var(--ink); border-radius: var(--radius);
  box-shadow: var(--shadow-lift); padding: 26px 22px; text-align: center;
}
.lobby-title { font-family: var(--font-display); font-size: 1.5rem; margin: 4px 0 16px; color: var(--accent-deep); }
.lobby-code-box {
  background: var(--paper); border: 2px dashed var(--ink); border-radius: 12px;
  padding: 14px; margin-bottom: 20px;
}
.lobby-code-label { font-size: .7rem; font-weight: 900; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-soft); }
.lobby-code {
  font-family: var(--font-display); font-size: 2rem; letter-spacing: .18em;
  color: var(--ink); margin: 4px 0 10px; user-select: all;
}
.lobby-code-actions { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.btn-sm { padding: 8px 14px; font-size: .8rem; }
.lobby-copy-hint { font-size: .75rem; font-weight: 600; color: var(--ink-soft); margin-top: 8px; }
.lobby-section { margin: 18px 0; text-align: left; }
.lobby-section-head { display: flex; justify-content: space-between; align-items: baseline; }
.lobby-count { font-size: .78rem; font-weight: 800; color: var(--teal); }
.lobby-players { list-style: none; margin: 10px 0 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.lobby-player {
  display: flex; align-items: center; gap: 10px;
  background: var(--paper); border: 2px solid var(--line); border-radius: 10px;
  padding: 9px 14px; font-weight: 800; font-size: .92rem;
}
.lobby-diff-note { font-size: .8rem; font-weight: 600; color: var(--ink-soft); margin-top: 8px; line-height: 1.45; }
.lobby-hint { font-size: .82rem; font-weight: 700; color: var(--ink-soft); margin-top: 14px; }
#lobby-diff-row { margin-top: 10px; grid-template-columns: repeat(5, 1fr); }
#lobby-diff-row .diff-btn { font-size: .8rem; padding: 10px 2px; }
#lobby-diff-row .diff-btn:disabled { cursor: default; opacity: .55; transform: none; }
#lobby-diff-row .diff-btn:disabled:hover { background: var(--paper); color: var(--ink); transform: none; }
#lobby-diff-row .diff-btn.active:disabled:hover { background: var(--accent); color: #fff; }
#lobby-diff-row .diff-btn.active { background: var(--accent); color: #fff; opacity: 1; }
.diff-daily { border-color: var(--gold); }
@media (max-width: 420px) {
  #lobby-diff-row { grid-template-columns: repeat(3, 1fr); }
}

/* ============================================================
   ACCOUNT / AUTH
   ============================================================ */
.btn-account {
  position: absolute; top: 14px; right: 14px; z-index: 5;
  font-size: 1.1rem;
}
.btn-account.logged-in { border-color: var(--teal); box-shadow: 0 4px 0 var(--teal); }

.auth-check {
  display: flex; gap: 10px; align-items: flex-start; text-align: left;
  margin: 10px 0; font-size: .82rem; font-weight: 600; color: var(--ink-soft);
  line-height: 1.45; cursor: pointer;
}
.auth-check input { margin-top: 3px; width: 18px; height: 18px; flex: none; accent-color: var(--accent); cursor: pointer; }
.auth-check a { color: var(--accent-deep); font-weight: 800; }

.auth-error { color: var(--heart); font-weight: 800; font-size: .85rem; margin: 8px 0; }
.auth-fineprint { font-size: .78rem; font-weight: 600; color: var(--ink-soft); margin-top: 14px; line-height: 1.5; }
.auth-fineprint a { color: var(--accent-deep); font-weight: 800; }

.btn-danger { background: var(--heart); color: #fff; box-shadow: 0 3px 0 #a52832; }
.btn-danger:hover { filter: brightness(1.08); }

.legal-links { margin-top: 28px; text-align: center; font-size: .82rem; font-weight: 700; color: var(--ink-soft); }
.legal-links a { color: var(--ink-soft); }
.legal-links a:hover { color: var(--accent-deep); }

/* ============================================================
   LEGAL PAGES
   ============================================================ */
.legal-body { display: block; padding: 24px 16px 60px; }
.legal-page {
  position: relative; z-index: 1; max-width: 760px; margin: 0 auto;
  background: var(--card); border: 2px solid var(--ink); border-radius: var(--radius);
  box-shadow: var(--shadow-lift); padding: 32px 28px;
}
.legal-page h1 { font-family: var(--font-display); font-size: 1.6rem; margin: 10px 0 4px; color: var(--accent-deep); }
.legal-page h2 { font-family: var(--font-display); font-size: 1.02rem; margin: 26px 0 8px; }
.legal-page h3 { font-size: .95rem; font-weight: 900; margin: 16px 0 6px; }
.legal-page p, .legal-page li { line-height: 1.7; font-weight: 600; color: var(--ink-soft); font-size: .93rem; }
.legal-page p { margin: 8px 0; }
.legal-page ul { margin: 8px 0 8px 22px; }
.legal-page li { margin: 6px 0; }
.legal-page b { color: var(--ink); }
.legal-page a { color: var(--accent-deep); font-weight: 800; }
.legal-updated { font-size: .8rem !important; text-transform: uppercase; letter-spacing: .05em; }
.legal-back { display: inline-block; margin-bottom: 8px; font-size: .85rem; }

/* ============================================================
   FEEDBACK
   ============================================================ */
.feedback-text { text-align: left; resize: vertical; min-height: 110px; font-weight: 600; }

/* ============================================================
   ADMIN DASHBOARD
   ============================================================ */
.admin-wrap { position: relative; z-index: 1; max-width: 900px; margin: 0 auto; }
.admin-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
.admin-header h1 { font-family: var(--font-display); font-size: 1.4rem; color: var(--accent-deep); }
.admin-header-actions { display: flex; gap: 8px; }
.btn-xs { padding: 4px 10px; font-size: .72rem; }

.admin-panel {
  background: var(--card); border: 2px solid var(--ink); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 20px; margin-bottom: 16px;
}
.admin-panel h2 { font-family: var(--font-display); font-size: 1rem; margin-bottom: 10px; }
.admin-panel h3 { font-size: .82rem; font-weight: 900; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-soft); margin-bottom: 8px; }
.admin-panel p { color: var(--ink-soft); font-weight: 600; margin-bottom: 10px; }
.admin-panel-head { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 12px; }
.admin-panel-head h2 { margin-bottom: 0; }
#admin-login .modal-input { text-align: left; }

/* stat cards */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat-card {
  background: var(--card); border: 2px solid var(--ink); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 16px; position: relative;
}
.stat-ico { font-size: 1.3rem; }
.stat-big { font-family: var(--font-display); font-size: 1.7rem; color: var(--accent-deep); margin: 2px 0; }
.stat-label { font-weight: 900; font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; }
.stat-sub { font-weight: 600; font-size: .74rem; color: var(--ink-soft); margin-top: 4px; line-height: 1.4; }

/* period tabs */
.period-tabs { display: flex; gap: 6px; flex-wrap: wrap; }
.period-tab {
  font-family: var(--font-body); font-weight: 800; font-size: .78rem;
  padding: 7px 14px; cursor: pointer; border: 2px solid var(--ink); border-radius: 999px;
  background: var(--paper); color: var(--ink);
}
.period-tab.active { background: var(--accent); color: #fff; }

/* chart */
.chart { min-height: 180px; font-weight: 700; color: var(--ink-soft); }
.chart-bars { display: flex; align-items: stretch; gap: 4px; height: 200px; overflow-x: auto; padding-bottom: 4px; }
.chart-col { flex: 1 1 0; min-width: 22px; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; gap: 3px; }
.chart-count { font-size: .62rem; font-weight: 800; color: var(--ink-soft); }
.chart-bar { width: 100%; max-width: 40px; background: var(--accent); border: 2px solid var(--ink); border-bottom-width: 3px; border-radius: 6px 6px 0 0; }
.chart-label { font-size: .58rem; font-weight: 800; color: var(--ink-soft); white-space: nowrap; }
.chart-note { font-size: .76rem; font-weight: 600; color: var(--ink-soft); margin-top: 10px; }

/* breakdowns */
.breakdown-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 560px) { .breakdown-grid { grid-template-columns: 1fr; } }
.bd-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.bd-list li { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: .85rem; }
.bd-name { flex: 0 0 110px; }
.bd-bar { flex: 1; height: 12px; background: var(--paper); border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.bd-bar span { display: block; height: 100%; background: var(--teal); border-radius: 999px; }
.bd-num { flex: 0 0 auto; font-weight: 900; color: var(--ink-soft); }

/* feedback inbox */
.fb-badge { background: var(--accent); color: #fff; font-size: .68rem; font-weight: 900; border-radius: 999px; padding: 2px 9px; vertical-align: middle; margin-left: 6px; font-family: var(--font-body); }
.fb-item { border: 2px solid var(--line); border-radius: 10px; padding: 12px 14px; margin-bottom: 10px; background: var(--paper); }
.fb-item.is-new { border-color: var(--accent); background: #fff8ef; }
.fb-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: .74rem; font-weight: 800; color: var(--ink-soft); margin-bottom: 6px; }
.fb-meta .fb-toggle { margin-left: auto; }
.fb-who { color: var(--teal); }
.fb-page { background: var(--paper-deep); border-radius: 6px; padding: 1px 7px; }
.fb-msg { font-weight: 600; line-height: 1.55; font-size: .92rem; white-space: pre-wrap; margin: 0; color: var(--ink); }
.fb-empty { font-weight: 700; color: var(--ink-soft); }

/* ============================================================
   SETTINGS & PLAY STYLE ONBOARDING (FTUE)
   ============================================================ */
.settings-section {
  margin: 18px 0;
  text-align: left;
}
.settings-section-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--accent-deep);
  margin-bottom: 12px;
  border-bottom: 2px dashed var(--line);
  padding-bottom: 4px;
}
.settings-row {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 8px;
}
.settings-option {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  user-select: none;
}
.settings-option input[type="radio"] {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border: 2px solid var(--ink);
  border-radius: 50%;
  cursor: pointer;
  outline: none;
  display: inline-grid;
  place-items: center;
  margin: 0;
  background: var(--card);
}
.settings-option input[type="radio"]::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--teal);
  transform: scale(0);
  transition: transform .15s cubic-bezier(.2, 1.8, .4, 1);
}
.settings-option input[type="radio"]:checked::before {
  transform: scale(1);
}
.settings-option input[type="radio"]:checked {
  border-color: var(--teal);
}

/* Onboarding (FTUE) Options */
.onboard-cards {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 22px 0;
}
.onboard-card {
  border: 2px solid var(--ink);
  border-radius: 12px;
  padding: 16px;
  width: 210px;
  cursor: pointer;
  background: var(--card);
  text-align: center;
  box-shadow: 0 4px 0 rgba(38,34,26,.15);
  transition: transform .15s, border-color .15s, background .15s, box-shadow .15s;
  user-select: none;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.onboard-card:hover {
  transform: translateY(-2px);
  background: #fffdf5;
}
.onboard-card.selected {
  border-color: var(--teal);
  background: #f0faf7;
  box-shadow: 0 4px 0 var(--teal);
  transform: translateY(2px);
}
.onboard-card-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin-bottom: 6px;
  color: var(--ink);
}
.onboard-card.selected .onboard-card-title {
  color: var(--teal);
}
.onboard-card-desc {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink-soft);
  line-height: 1.35;
  margin-bottom: 12px;
}
.onboard-card-illustration {
  background: var(--paper);
  border: 2px solid var(--ink);
  border-radius: 8px;
  padding: 8px 10px;
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 0.75rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  width: 100%;
  box-sizing: border-box;
}
.onboard-card.selected .onboard-card-illustration {
  border-color: var(--teal);
}
.onboard-card-illustration span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.onboard-card-illustration .arr {
  color: var(--teal);
  font-weight: 900;
  font-size: 0.95rem;
}

/* Number-first hover previews */
.board.num-first-active .cell:not(.given):not(.user):hover {
  background: #cdeee6 !important;
}
.board.num-first-active .cell:not(.given):not(.user):empty:hover::before {
  content: var(--hover-digit);
  opacity: 0.45;
  color: var(--teal);
  font-weight: 900;
}