static/style.css

/* ═══════════════════════════════════════════════════════
   METROPOLIS CHESS CLUB
   Viktor Petrov has played on every board in this city.
   ═══════════════════════════════════════════════════════ */

:root {
    /* Board */
    --sq-light:      #d4aa72;
    --sq-dark:       #7c3b1e;
    --sq-sel:        rgba(255, 205, 60, 0.72);
    --sq-last-l:     #c09a52;
    --sq-last-d:     #9e5228;
    --sq-move-dot:   rgba(0,0,0,0.28);
    --sq-check:      rgba(210, 35, 35, 0.62);
    --board-edge:    #1c0c04;
    --board-side:    #3e1c08;

    /* Pieces */
    --wp:    #f5e8cc;
    --bp:    #130700;

    /* App */
    --bg:       #0b0907;
    --surf:     #131009;
    --surf2:    #1a1510;
    --border:   #2a2018;
    --border2:  #382c1c;

    /* Gold */
    --gold:     #c8a448;
    --gold-d:   #7a6030;
    --gold-g:   rgba(200,164,72,0.32);

    /* Text */
    --t1:  #ddd0b0;
    --t2:  #7a6a50;
    --t3:  #483c28;

    --fast: 0.1s;
    --mid:  0.2s;
}

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

html, body {
    height: 100%;
    overflow: hidden;
    background: var(--bg);
    color: var(--t1);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
}

/* ══════════════════════════════════════
   SCREENS
══════════════════════════════════════ */
.screen { display: none; width: 100%; height: 100%; }
.screen.active { display: flex; }

/* ══════════════════════════════════════
   SETUP / GAME OVER
══════════════════════════════════════ */
#setup-screen, #game-over-screen {
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

/* Club hall background image */
.setup-bg {
    position: absolute;
    inset: 0;
    background: url('/static/chess-hall.png') center center / cover no-repeat;
    opacity: 0.18;
    pointer-events: none;
}

/* Crosshatch noise bg */
.setup-noise {
    position: absolute;
    inset: 0;
    background-image:
        repeating-linear-gradient(
            45deg,
            rgba(200,164,72,0.018) 0px, rgba(200,164,72,0.018) 1px,
            transparent 1px, transparent 8px
        ),
        repeating-linear-gradient(
            -45deg,
            rgba(200,164,72,0.012) 0px, rgba(200,164,72,0.012) 1px,
            transparent 1px, transparent 8px
        );
    pointer-events: none;
}

.setup-card {
    position: relative;
    z-index: 1;
    background: var(--surf);
    border: 1px solid var(--border);
    border-top: 2px solid var(--gold-d);
    padding: 2.8rem 3.5rem 3rem;
    width: min(460px, 92vw);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0;
}

.setup-glyph {
    font-size: 3.2rem;
    line-height: 1;
    margin-bottom: 1.2rem;
    filter: drop-shadow(0 0 16px var(--gold-g));
}

.setup-title {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 2.1rem;
    font-weight: 700;
    color: var(--gold);
    line-height: 1.15;
    letter-spacing: 0.03em;
    margin-bottom: 1rem;
}

.setup-rule {
    width: 36px;
    height: 1px;
    background: var(--gold-d);
    margin-bottom: 0.7rem;
}

.setup-sub {
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.72rem;
    color: var(--t2);
    letter-spacing: 0.16em;
    text-transform: uppercase;
    margin-bottom: 2rem;
}

.setup-form {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
    margin-bottom: 2.2rem;
}

.setup-label {
    text-align: left;
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.68rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--t2);
}

.setup-input {
    width: 100%;
    background: rgba(255,255,255,0.035);
    border: 1px solid var(--border2);
    border-bottom-color: var(--gold-d);
    color: var(--t1);
    font-size: 1.05rem;
    font-family: inherit;
    padding: 0.72rem 1rem;
    outline: none;
    transition: border-color var(--fast), background var(--fast);
}

.setup-input:focus {
    border-color: var(--gold);
    background: rgba(255,255,255,0.055);
}

.setup-input::placeholder { color: var(--t3); }

.btn-enter {
    width: 100%;
    background: var(--gold);
    color: #0b0907;
    border: none;
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    padding: 0.88rem;
    cursor: pointer;
    transition: background var(--fast), transform var(--fast);
}

.btn-enter:hover { background: #dbbe60; transform: translateY(-1px); }
.btn-enter:active { transform: translateY(0); }

/* Quote — visible, not buried */
.setup-quote {
    width: 100%;
    border-left: 2px solid var(--gold-d);
    padding: 0.7rem 0 0.7rem 1rem;
    text-align: left;
}

.setup-quote p {
    font-family: 'Playfair Display', Georgia, serif;
    font-style: italic;
    font-size: 0.9rem;
    color: #b8a880;        /* warm, readable */
    line-height: 1.65;
    margin-bottom: 0.45rem;
}

.setup-quote footer {
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.67rem;
    color: var(--t2);
    letter-spacing: 0.09em;
}

/* ══════════════════════════════════════
   GAME LAYOUT
══════════════════════════════════════ */
#game-screen { align-items: stretch; }

.game-layout {
    display: flex;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

/* ══════════════════════════════════════
   BOARD PANEL
══════════════════════════════════════ */
.board-panel {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.2rem 1.8rem;
    gap: 0.55rem;
    background: var(--bg);
}

/* Player bars */
.player-bar {
    width: 100%;
    max-width: calc(var(--bs, 460px) + 4px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.25rem 0;
}

.player-bar-left {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.pbar-piece { font-size: 1.6rem; line-height: 1; }

.light-piece {
    color: #f5e8cc;
    text-shadow: 0 1px 2px rgba(0,0,0,0.9);
    filter: drop-shadow(0 2px 2px rgba(0,0,0,0.5));
}

.dark-piece {
    color: #130700;
    filter: drop-shadow(0 1px 3px rgba(0,0,0,0.5))
            drop-shadow(0 0 1px rgba(255,200,100,0.1));
}

.pbar-info { display: flex; flex-direction: column; gap: 0.08rem; }

.pbar-name {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--t1);
    letter-spacing: 0.02em;
}

.pbar-sub {
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.62rem;
    color: var(--t2);
    letter-spacing: 0.07em;
}

.phase-badge {
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--gold);
    background: rgba(200,164,72,0.07);
    border: 1px solid var(--gold-d);
    padding: 0.18rem 0.55rem;
}

.check-badge {
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-weight: 700;
    color: #e04040;
    background: rgba(200,40,40,0.09);
    border: 1px solid rgba(180,40,40,0.4);
    padding: 0.18rem 0.55rem;
    animation: blink 1s ease infinite;
}

.check-badge.is-checkmate {
    animation: none;
    color: #ff5050;
    background: rgba(200,40,40,0.18);
    border-color: rgba(200,40,40,0.6);
    letter-spacing: 0.1em;
}

@keyframes blink {
    0%,100% { opacity: 1; }
    50%      { opacity: 0.5; }
}

/* ══════════════════════════════════════
   3D BOARD
══════════════════════════════════════ */
.board-scene-wrap {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Perspective container — the "camera" */
.board-scene {
    perspective: 1400px;
    perspective-origin: 50% -10%;
    /* Smooth parallax: perspective-origin will be nudged by JS */
    transition: perspective-origin 0.18s ease-out;
    padding: 20px 20px 60px;
    cursor: default;
}

/* The isometric board — fixed tilt, no spin */
.board-3d {
    --bs: min(456px, calc(100vh - 240px), calc(100vw - 360px));
    position: relative;
    width: var(--bs);
    height: var(--bs);
    transform-style: preserve-3d;
    transform: rotateX(38deg);
}

/* Board face */
.board-grid {
    position: absolute;
    inset: 0;
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(8, 1fr);
    border: 4px solid var(--board-edge);
    box-shadow:
        inset 0 0 0 1px rgba(255,180,80,0.06),
        0 0 60px rgba(0,0,0,0.5);
}

/* Wooden side panels — purely decorative, must not intercept clicks */
.board-side {
    position: absolute;
    background: linear-gradient(to bottom, #5c2e10 0%, #2c1208 100%);
    pointer-events: none;   /* ← critical: never steal mouse events from squares */
}

/* Front face (south — visible when tilted toward viewer) */
.board-side-s {
    left: 0; right: 0;
    height: 28px;
    bottom: -28px;
    transform-origin: top center;
    transform: rotateX(-90deg);
    background: linear-gradient(to bottom, #6a3518, #2c1208);
    border: 2px solid var(--board-edge);
    border-top: none;
}

/* Back face (north) */
.board-side-n {
    left: 0; right: 0;
    height: 28px;
    top: -28px;
    transform-origin: bottom center;
    transform: rotateX(90deg);
    background: linear-gradient(to top, #6a3518, #2c1208);
    border: 2px solid var(--board-edge);
    border-bottom: none;
}

/* Right face (east) */
.board-side-e {
    top: 0; bottom: 0;
    width: 28px;
    right: -28px;
    transform-origin: left center;
    transform: rotateY(90deg);
    background: linear-gradient(to right, #6a3518, #2c1208);
    border: 2px solid var(--board-edge);
    border-left: none;
}

/* Left face (west) */
.board-side-w {
    top: 0; bottom: 0;
    width: 28px;
    left: -28px;
    transform-origin: right center;
    transform: rotateY(-90deg);
    background: linear-gradient(to left, #6a3518, #2c1208);
    border: 2px solid var(--board-edge);
    border-right: none;
}

/* Bottom face */
.board-side-b {
    inset: 0;
    transform: translateZ(-28px);
    background: #1a0a04;
    border: 2px solid var(--board-edge);
}

/* ── Board clock-spin (vs_human turn change) ──────────────────────────────── */
/*   Board spins clockwise (rotateZ +180). Pieces counter-rotate CCW (-180)    */
/*   at the same speed so they stay visually upright throughout the whole spin. */
#chess-board {
    transition: transform 0.55s ease-in-out;
}
#chess-board.board-black-turn {
    transform: rotateZ(180deg);
}
#chess-board .piece,
#chess-board .sq-coord {
    transition: transform 0.55s ease-in-out;
}
#chess-board.board-black-turn .piece,
#chess-board.board-black-turn .sq-coord {
    transform: rotateZ(-180deg);
}

/* Drag hint */
.board-hint {
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.6rem;
    color: var(--t3);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-top: 0.2rem;
    transition: opacity 0.4s;
}

/* ══════════════════════════════════════
   SQUARES
══════════════════════════════════════ */
.sq {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: default;
}

.sq.light { background-color: var(--sq-light); }
.sq.dark  { background-color: var(--sq-dark);  }

/* Coord labels inside corner squares */
.sq-coord {
    position: absolute;
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.55rem;
    font-weight: 600;
    line-height: 1;
    pointer-events: none;
    opacity: 0.55;
}

.sq.light .sq-coord { color: var(--sq-dark); }
.sq.dark  .sq-coord { color: var(--sq-light); }

.sq-coord.file { bottom: 2px; right: 3px; }
.sq-coord.rank { top: 2px; left: 3px; }

/* Last move */
.sq.last-move.light { background-color: var(--sq-last-l); }
.sq.last-move.dark  { background-color: var(--sq-last-d);  }

/* Selected */
.sq.selected {
    background-color: var(--sq-sel) !important;
    box-shadow: inset 0 0 0 2px rgba(255,210,60,0.9);
}

/* King in check */
.sq.in-check { background-color: var(--sq-check) !important; }

/* Legal move — empty square dot */
.sq.legal-empty::after {
    content: '';
    position: absolute;
    width: 32%;
    height: 32%;
    border-radius: 50%;
    background: var(--sq-move-dot);
    pointer-events: none;
    z-index: 2;
}

/* Legal move — capture ring */
.sq.legal-cap::before {
    content: '';
    position: absolute;
    inset: 0;
    border: 6px solid rgba(0,0,0,0.26);
    border-radius: 50%;
    pointer-events: none;
    z-index: 2;
}

/* Clickable cursor */
.sq.legal-empty,
.sq.legal-cap,
.sq.own-piece { cursor: pointer; }

/* ══════════════════════════════════════
   SETUP — MODE & DIFFICULTY BUTTONS
══════════════════════════════════════ */
.mode-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    width: 100%;
}

.mode-btn {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border2);
    color: var(--t2);
    padding: 0.65rem 0.4rem 0.6rem;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
    transition: all var(--fast);
    text-align: center;
}

.mode-btn:hover:not(:disabled) {
    border-color: var(--gold-d);
    color: var(--t1);
    background: rgba(200,164,72,0.06);
}

.mode-btn.active {
    border-color: var(--gold);
    color: var(--gold);
    background: rgba(200,164,72,0.09);
}

.mode-btn.coming-soon {
    opacity: 0.35;
    cursor: not-allowed;
}

.mode-title {
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.mode-desc {
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.57rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--t3);
}

.mode-btn.active .mode-desc { color: var(--gold-d); }

#difficulty-row { width: 100%; }

.diff-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    width: 100%;
    margin-top: 0.3rem;
}

.diff-btn {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border2);
    color: var(--t2);
    padding: 0.5rem 0.4rem;
    cursor: pointer;
    font-family: inherit;
    transition: all var(--fast);
    text-align: center;
}

.diff-btn:hover {
    border-color: var(--gold-d);
    color: var(--t1);
}

.diff-btn.active {
    border-color: var(--gold);
    color: var(--gold);
    background: rgba(200,164,72,0.09);
}

.diff-title {
    font-size: 0.74rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

/* ══════════════════════════════════════
   PIECES — clean flat SVG rendering
══════════════════════════════════════ */

.piece {
    width: 88%;
    height: 88%;
    object-fit: contain;
    pointer-events: none;
    user-select: none;
    display: block;
    filter: drop-shadow(0 2px 5px rgba(0,0,0,0.72));
    transition: filter 0.1s ease, transform 0.1s ease;
}

.sq.own-piece:hover .piece {
    filter: drop-shadow(0 4px 10px rgba(0,0,0,0.88));
    transform: scale(1.05);
}

.sq.own-piece         { cursor: grab; }
.sq.own-piece:active  { cursor: grabbing; }

/* Hide piece while dragging */
.sq.drag-source .piece { opacity: 0; }

/* Landing flash — subtle scale pop when piece arrives */
@keyframes piece-land {
    0%   { transform: scale(1.18); opacity: 0.7; }
    65%  { transform: scale(0.96); }
    100% { transform: scale(1);    opacity: 1; }
}
.piece.land { animation: piece-land 0.22s ease-out forwards; }

/* Ghost piece carried by cursor during drag */
.piece-ghost {
    position: fixed;
    width: 72px;
    height: 72px;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -58%) scale(1.28);
    opacity: 0.9;
    filter: drop-shadow(0 8px 18px rgba(0,0,0,0.88));
}

/* ══════════════════════════════════════
   MOVE LOG
══════════════════════════════════════ */
.move-log-bar {
    width: 100%;
    max-width: calc(var(--bs, 460px) + 4px);
    min-height: 24px;
    overflow: hidden;
}

.move-log-inner {
    display: flex;
    flex-wrap: nowrap;
    gap: 3px;
    padding: 2px 0;
    overflow-x: auto;
    scrollbar-width: none;
}

.move-log-inner::-webkit-scrollbar { display: none; }

.mpill {
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.66rem;
    color: var(--t3);
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    padding: 0.07rem 0.32rem;
    white-space: nowrap;
}

.mpill.recent {
    color: var(--gold);
    border-color: var(--gold-d);
    background: rgba(200,164,72,0.05);
}

.board-footer-row {
    width: 100%;
    max-width: calc(var(--bs, 460px) + 4px);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.move-counter {
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.64rem;
    color: var(--t3);
    letter-spacing: 0.06em;
}


.btn-resign {
    background: transparent;
    border: 1px solid #4a1c1c;
    color: #7a3838;
    font-family: inherit;
    font-size: 0.62rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 0.2rem 0.6rem;
    cursor: pointer;
    transition: all var(--fast);
}

.btn-resign:hover { background: rgba(130,50,50,0.12); border-color: #6a2828; color: #b05050; }

/* ══════════════════════════════════════
   CAPTURED PIECES
══════════════════════════════════════ */
.captured-pieces {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1px;
    max-width: 120px;
    margin-left: 0.5rem;
}

.captured-piece {
    width: 16px;
    height: 16px;
    object-fit: contain;
    opacity: 0.72;
    filter: drop-shadow(0 1px 2px rgba(0,0,0,0.8));
}

/* ══════════════════════════════════════
   MOVE FLASH OVERLAY
══════════════════════════════════════ */
.flash-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255, 215, 55, 0.52);
    pointer-events: none;
    z-index: 5;
    animation: flash-fade 0.38s ease-out forwards;
}

@keyframes flash-fade {
    0%   { opacity: 1; }
    100% { opacity: 0; }
}

/* ══════════════════════════════════════
   PROMOTION DIALOG
══════════════════════════════════════ */
.promo-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.72);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    backdrop-filter: blur(2px);
}

.promo-card {
    background: var(--surf);
    border: 1px solid var(--border2);
    border-top: 2px solid var(--gold-d);
    padding: 1.6rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.1rem;
}

.promo-label {
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.68rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--t2);
}

.promo-choices {
    display: flex;
    gap: 0.6rem;
}

.promo-btn {
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border2);
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--fast);
    padding: 0;
}

.promo-btn:hover {
    border-color: var(--gold);
    background: rgba(200,164,72,0.12);
}

.promo-btn img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    pointer-events: none;
}

/* ══════════════════════════════════════
   RESULT BANNER (in-game, no screen jump)
══════════════════════════════════════ */
.result-banner {
    width: 100%;
    max-width: calc(var(--bs, 460px) + 4px);
    border: 1px solid var(--border2);
    border-top: 2px solid var(--gold-d);
    background: var(--surf);
    animation: msg-in 0.3s ease;
}

.result-banner-inner {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.65rem 1rem;
}

.result-banner-icon {
    font-size: 1.4rem;
    line-height: 1;
    flex-shrink: 0;
}

.result-banner-text {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--gold);
    flex: 1;
}

.btn-play-again {
    background: transparent;
    border: 1px solid var(--gold-d);
    color: var(--gold);
    font-family: inherit;
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    padding: 0.32rem 0.8rem;
    cursor: pointer;
    transition: all var(--fast);
    white-space: nowrap;
    flex-shrink: 0;
}

.btn-play-again:hover {
    background: rgba(200,164,72,0.12);
    border-color: var(--gold);
}

/* ══════════════════════════════════════
   CHAT PANEL
══════════════════════════════════════ */
.chat-panel {
    width: 300px;
    min-width: 260px;
    display: flex;
    flex-direction: column;
    background: var(--surf);
    border-left: 1px solid var(--border);
    overflow: hidden;
}

.chat-hdr {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.9rem 1rem;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

/* Viktor portrait */
.viktor-avatar {
    width: 40px;
    height: 40px;
    border-radius: 2px;
    overflow: hidden;
    flex-shrink: 0;
    border: 1px solid var(--border2);
    position: relative;
}

.viktor-portrait {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 15%;
    display: block;
}

.chat-hdr-glyph { font-size: 1.2rem; color: var(--gold-d); }

.chat-hdr-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.chat-hdr-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--t1);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-hdr-sub {
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.6rem;
    color: var(--t2);
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.chat-hdr-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #4a8840;
    flex-shrink: 0;
    box-shadow: 0 0 5px rgba(74,136,64,0.45);
}

.chat-hdr-right {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-left: auto;
    flex-shrink: 0;
}

.mute-btn {
    background: none;
    border: none;
    color: rgba(255,255,255,0.35);
    font-size: 0.85rem;
    cursor: pointer;
    padding: 0.2rem 0.3rem;
    border-radius: 4px;
    transition: color 0.2s;
    line-height: 1;
}
.mute-btn:hover { color: rgba(255,255,255,0.7); }
.mute-btn.muted { color: rgba(255,255,255,0.18); }

.mute-btn-global {
    position: fixed;
    top: 1rem;
    right: 1.2rem;
    z-index: 9999;
    background: none;
    border: none;
    color: rgba(255,255,255,0.3);
    font-size: 1rem;
    cursor: pointer;
    padding: 0.3rem 0.4rem;
    border-radius: 5px;
    transition: color 0.2s;
    line-height: 1;
}
.mute-btn-global:hover { color: rgba(255,255,255,0.65); }
.mute-btn-global.muted { color: rgba(255,255,255,0.15); }
.mute-btn-global.in-game { right: calc(300px + 0.8rem); }

/* Messages */
.chat-msgs {
    flex: 1;
    overflow-y: auto;
    padding: 0.9rem;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.chat-msgs::-webkit-scrollbar { width: 3px; }
.chat-msgs::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

@keyframes msg-in {
    from { opacity: 0; transform: translateY(5px); }
    to   { opacity: 1; transform: translateY(0); }
}

.cmsg {
    display: flex;
    flex-direction: column;
    max-width: 92%;
    animation: msg-in var(--mid) ease;
}

.cmsg.agent  { align-self: flex-start; }
.cmsg.player { align-self: flex-end; }

.cmsg-bubble {
    font-size: 0.82rem;
    line-height: 1.58;
    padding: 0.52rem 0.78rem;
    word-break: break-word;
}

.cmsg.agent .cmsg-bubble {
    background: rgba(255,255,255,0.04);
    border-left: 2px solid var(--gold-d);
    color: var(--t1);
}

.cmsg.player .cmsg-bubble {
    background: rgba(200,164,72,0.09);
    border-right: 2px solid var(--gold);
    color: var(--t1);
    text-align: right;
}

/* Memory surfaced / created indicators */
.cmsg-memory-pill {
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.55rem;
    color: var(--t3);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding-left: 0.12rem;
    margin-bottom: 0.12rem;
    opacity: 0.65;
}

.cmsg-memory-note {
    font-style: italic;
    font-size: 0.58rem !important;
    opacity: 0.5;
}

/* Tone-based bubble accent — subtle left-border colour shift */
.cmsg.agent.tone-cold    .cmsg-bubble { border-left-color: #2e3040; opacity: 0.82; }
.cmsg.agent.tone-sharp   .cmsg-bubble { border-left-color: #7a3838; }
.cmsg.agent.tone-teasing .cmsg-bubble { border-left-color: #5a5020; }
.cmsg.agent.tone-warm    .cmsg-bubble { border-left-color: #8a6a30; }
.cmsg.agent.tone-quiet   .cmsg-bubble { border-left-color: #282824; opacity: 0.75; }
.cmsg.agent.tone-analytical .cmsg-bubble { border-left-color: #2a4a5a; }

.cmsg-tone {
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.58rem;
    color: var(--t3);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-top: 0.2rem;
    padding-left: 0.12rem;
}

.cmsg.player .cmsg-tone { text-align: right; padding-left: 0; padding-right: 0.12rem; }

/* System / turn notification messages */
.cmsg.system { align-self: center; }

.cmsg.system .cmsg-bubble {
    background: transparent;
    border: none;
    color: var(--t3);
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-align: center;
    padding: 0.2rem 0;
}

/* Viktor's thinking — collapsed by default, expand on click */
.cmsg-thinking {
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.68rem;
    color: var(--t3);
    font-style: italic;
    padding: 0.3rem 0.78rem;
    border-left: 2px solid var(--border2);
    margin-top: 0.2rem;
    cursor: pointer;
    transition: color var(--fast);
    line-height: 1.5;
    display: none;  /* hidden until clicked */
}

.cmsg-thinking.visible { display: block; }
.cmsg-thinking:hover { color: var(--t2); }

.cmsg-thinking-toggle {
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.58rem;
    color: var(--t3);
    letter-spacing: 0.08em;
    cursor: pointer;
    margin-top: 0.18rem;
    padding-left: 0.12rem;
    user-select: none;
}

.cmsg-thinking-toggle:hover { color: var(--t2); }

/* Typing indicator */
.thinking-row {
    align-self: flex-start;
    display: flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.52rem 0.78rem;
    background: rgba(255,255,255,0.04);
    border-left: 2px solid var(--gold-d);
    animation: msg-in var(--mid) ease;
    max-width: 92%;
}

.thinking-lbl {
    font-size: 0.7rem;
    color: var(--t3);
    font-style: italic;
}

.dots { display: flex; gap: 3px; align-items: center; }

.dots span {
    display: block;
    width: 4px; height: 4px;
    border-radius: 50%;
    background: var(--gold);
    animation: dpulse 1.3s ease infinite;
}

.dots span:nth-child(2) { animation-delay: 0.18s; }
.dots span:nth-child(3) { animation-delay: 0.36s; }

@keyframes dpulse {
    0%,80%,100% { opacity: 0.28; transform: scale(0.72); }
    40%          { opacity: 1;    transform: scale(1.12); }
}

/* Chat footer */
.chat-foot {
    flex-shrink: 0;
    border-top: 1px solid var(--border);
}

.stats-row {
    display: flex;
    justify-content: space-around;
    padding: 0.5rem 0.4rem;
    border-bottom: 1px solid var(--border);
}

.stat { display: flex; flex-direction: column; align-items: center; gap: 0.07rem; }

.stat-lbl {
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.55rem;
    color: var(--t3);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.stat-val {
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 0.8rem;
    color: var(--gold);
    font-weight: 600;
}

.chat-input-row {
    display: flex;
    align-items: center;
    padding: 0.55rem 0.65rem;
    gap: 0.45rem;
}

.chat-input {
    flex: 1;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border2);
    color: var(--t1);
    font-family: inherit;
    font-size: 0.8rem;
    padding: 0.48rem 0.7rem;
    outline: none;
    transition: border-color var(--fast);
    min-width: 0;
}

.chat-input:focus { border-color: var(--gold-d); }
.chat-input::placeholder { color: var(--t3); }

.btn-send {
    background: var(--gold-d);
    color: var(--bg);
    border: none;
    font-size: 1rem;
    font-weight: 700;
    width: 32px;
    height: 32px;
    cursor: pointer;
    transition: background var(--fast);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.btn-send:hover { background: var(--gold); }

/* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */
@media (max-width: 680px) {
    .game-layout { flex-direction: column; }
    .board-panel { padding: 0.6rem; gap: 0.3rem; }
    .board-3d { --bs: min(360px, calc(100vw - 24px)); }
    .chat-panel { width: 100%; min-width: 0; height: 260px; border-left: none; border-top: 1px solid var(--border); }
}