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

/* ========== Design tokens — Royal / Historical theme ========== */
:root {
    --bg: #0a0f1a;
    --bg-navy-dark: #060a12;
    --gold: #b8941f;
    --gold-light: #d4a84a;
    --gold-dark: #8b6914;
    --gold-bright: #e8c968;
    --p1: #2563eb;
    --p1-glow: rgba(37, 99, 235, 0.55);
    --p1-dark: #1d4ed8;
    --p2: #dc2626;
    --p2-glow: rgba(220, 38, 38, 0.55);
    --p2-dark: #b91c1c;
    --text: #f0ebe0;
    --text-muted: #a89f8c;
    --spacing: 12px;
    --popup-width: 340px;
    --popup-height: 440px; /* height for how-to-play popup only */
}

/* ========== Game background: bg.png ========== */
body {
    margin: 0;
    background-color: var(--bg);
    background-image: url('../img/bg.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--text);
    font-family: 'Cinzel', serif;
    overflow: hidden;
    touch-action: none;
    min-height: 100vh;
    min-height: 100dvh;
    width: 100vw;
    user-select: none;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 120% 120% at 50% 50%, transparent 0%, rgba(6, 10, 18, 0.5) 70%),
        radial-gradient(ellipse 80% 80% at 50% 50%, transparent 0%, rgba(20, 15, 8, 0.15) 100%);
    pointer-events: none;
    z-index: 0;
}

/* ========== Viewport: full screen, game centered ========== */
#app-viewport {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    min-width: 100vw;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
    z-index: 1;
}

/* ========== Game container: centered on screen, transparent so bg.png shows ========== */
#game-container {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 95vmin;
    max-width: 540px;
    height: 95vmin;
    max-height: 100vh;
    max-height: 100dvh;
    min-height: 420px;
    margin: auto;
    background: transparent;
    box-sizing: border-box;
}

/* ========== Corner buttons: game-style, match board theme ========== */
.corner-buttons {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: space-between;
}

/* Start screen is separate — hide corner buttons when start pop-up is visible */
body.start-screen-open .corner-buttons {
    display: none !important;
}

.corner-btn {
    pointer-events: auto;
    width: 44px;
    height: 44px;
    padding: 0;
    border: none;
    border-radius: 10px;
    /* Same beveled gold style as game board frame */
    background: linear-gradient(145deg, #c9a227 0%, #a88418 30%, #8b6914 60%, #6b5010 100%);
    color: rgba(255, 250, 235, 0.95);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, box-shadow 0.2s, filter 0.2s;
    box-shadow:
        0 4px 12px rgba(0, 0, 0, 0.4),
        0 2px 6px rgba(0, 0, 0, 0.3),
        inset 2px 2px 3px rgba(255, 235, 180, 0.4),
        inset -1px -1px 2px rgba(0, 0, 0, 0.25);
    -webkit-tap-highlight-color: transparent;
}

.corner-btn:hover {
    color: #fffef5;
    transform: scale(1.08);
    box-shadow:
        0 6px 16px rgba(0, 0, 0, 0.45),
        0 0 20px rgba(184, 148, 31, 0.25),
        inset 2px 2px 3px rgba(255, 235, 180, 0.5),
        inset -1px -1px 2px rgba(0, 0, 0, 0.2);
}

.corner-btn:active {
    transform: scale(0.96);
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.4),
        inset 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.corner-btn svg {
    width: 22px;
    height: 22px;
    display: block;
    margin: auto;
    flex-shrink: 0;
    filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.3));
}

/* Help icon (?) viewBox is small — scale to match other icons */
.corner-btn--help svg {
    transform: scale(1.3);
}

.corner-buttons .corner-btn--home {
    position: absolute;
    top: var(--spacing);
    left: var(--spacing);
}

.corner-buttons .corner-btn--reset {
    position: absolute;
    top: var(--spacing);
    right: calc(var(--spacing) + 50px);
}

.corner-buttons .corner-btn--help {
    position: absolute;
    top: var(--spacing);
    right: var(--spacing);
}

/* ========== Layout: header → board (centered in game container) ========== */
#ui-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-sizing: border-box;
    z-index: 1;
}

.game-header {
    position: relative;
    flex-shrink: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: clamp(8px, 3vw, 16px);
    padding: 0;
    margin: var(--spacing);
    margin-bottom: clamp(12px, 4vw, 20px);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    background: transparent;
    border: none;
    box-shadow: none;
    pointer-events: none;
}

.game-header .player-badge {
    position: relative;
}

.player-badge {
    display: flex;
    align-items: center;
    gap: clamp(6px, 2vw, 10px);
    font-size: clamp(12px, 3.2vw, 16px);
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-family: 'Cinzel Decorative', 'Cinzel', serif;
    transition: opacity 0.25s, transform 0.25s, box-shadow 0.25s, border-color 0.25s, color 0.25s, background 0.25s;
    opacity: 0.6;
    color: var(--text-muted);
    padding: clamp(6px, 1.5vw, 10px) clamp(10px, 2.5vw, 18px);
    border-radius: clamp(6px, 2vw, 10px);
    border: 2px solid transparent;
    background: transparent;
    box-shadow: none;
}

.player-badge.active {
    opacity: 1;
    transform: scale(1.04);
    border-color: var(--gold);
    background: transparent;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.45);
}

.player-badge--p1.active,
.player-badge--p2.active {
    color: var(--gold);
}

/* Turn indicator dot: game piece style, 3D and glowing; responsive size */
.player-badge .dot {
    width: clamp(8px, 2.5vw, 14px);
    height: clamp(8px, 2.5vw, 14px);
    border-radius: 50%;
    box-shadow:
        0 2px 6px rgba(0, 0, 0, 0.4),
        inset 0 2px 2px rgba(255, 255, 255, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.2);
    flex-shrink: 0;
}

.player-badge--p1 .dot {
    background: linear-gradient(145deg, #4d7cf6 0%, var(--p1) 50%, var(--p1-dark) 100%);
}
.player-badge--p2 .dot {
    background: linear-gradient(145deg, #e85c5c 0%, var(--p2) 50%, var(--p2-dark) 100%);
}
.player-badge--p1.active .dot,
.player-badge--p2.active .dot {
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4), inset 0 2px 2px rgba(255, 255, 255, 0.4);
}

/* Board wrapper: square size via --board-size (set by JS); frame and padding */
.board-wrapper {
    --board-size: 400px;
    --board-flex-shrink: 0;
    position: relative;
    flex: 0 0 auto;
    width: var(--board-size);
    height: var(--board-size);
    flex-shrink: var(--board-flex-shrink);
    margin: var(--spacing) auto;
    align-self: center;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-sizing: border-box;
    padding: 5px;
    /* Beveled frame: light top-left, dark bottom-right */
    background: linear-gradient(145deg, #c9a227 0%, #a88418 25%, #8b6914 50%, #6b5010 75%, #5c4510 100%);
    border: none;
    border-radius: 10px;
    box-shadow:
        0 20px 50px rgba(0, 0, 0, 0.55),
        0 12px 28px rgba(0, 0, 0, 0.45),
        0 6px 12px rgba(0, 0, 0, 0.4),
        inset 2px 2px 3px rgba(255, 235, 180, 0.4),
        inset -1px -1px 2px rgba(0, 0, 0, 0.2);
}

/* Inner groove: thin dark line before the recessed surface */
.board-wrapper::before {
    content: '';
    position: absolute;
    inset: 5px;
    border-radius: 5px;
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.5);
    pointer-events: none;
    z-index: 1;
}

/* Game board surface: recessed, gameboard-bg with overlay + inner 3D shadow */
.board-wrapper::after {
    content: '';
    position: absolute;
    inset: 7px;
    background:
        linear-gradient(rgba(0, 0, 0, 0.45), rgba(0, 0, 0, 0.5)),
        url('../img/gameboard-bg.png') center center / cover no-repeat;
    border-radius: 5px;
    pointer-events: none;
    z-index: 0;
    box-shadow:
        inset 0 8px 24px rgba(0, 0, 0, 0.6),
        inset 0 4px 12px rgba(0, 0, 0, 0.4),
        inset 2px 2px 4px rgba(0, 0, 0, 0.35),
        inset -1px -1px 2px rgba(255, 255, 255, 0.03);
}

#canvas {
    position: relative;
    z-index: 1;
    display: block;
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    cursor: pointer;
    pointer-events: auto;
    background: transparent;
    border-radius: 6px;
}

/* Thinking message — hidden (turn indicator removed from below board) */
.thinking-message {
    display: none !important;
}

/* ========== Modal screens: full viewport overlay (entire screen) ========== */
.screen {
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: auto;
    transition: opacity 0.3s;
    padding: 20px;
    box-sizing: border-box;
    background: rgba(0, 0, 0, 0.6);
    z-index: 50;
}

/* Full-viewport overlay: covers entire screen, popup centered */
.screen--full {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    min-width: 100vw;
    min-height: 100vh;
    min-height: 100dvh;
    z-index: 110;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-y: auto;
    overflow-x: hidden;
    padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
    box-sizing: border-box;
}

#screen-start {
    background-image:
        radial-gradient(ellipse 100% 100% at 50% 50%, rgba(0, 0, 0, 0.4) 0%, rgba(6, 10, 18, 0.85) 100%),
        url('../img/bg.png');
    background-size: cover;
    background-position: center;
    background-color: #0a0f1a;
}

.screen.hidden {
    opacity: 0;
    pointer-events: none;
}

#screen-over {
    background: rgba(0, 0, 0, 0.75);
}

/* How to play popup: fixed height, content scrolls */
.popup--help {
    border-color: var(--gold);
    width: min(var(--popup-width), calc(100% - 2 * var(--spacing)));
    max-width: calc(100vw - 2 * var(--spacing));
    min-height: var(--popup-height);
    height: var(--popup-height);
    max-height: var(--popup-height);
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
}

.help-list {
    list-style: none;
    padding: 0;
    margin: 0 0 24px 0;
    text-align: left;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.7;
}

.help-list li {
    margin-bottom: 10px;
    padding-left: 1.2em;
    position: relative;
}

.help-list li::before {
    content: "•";
    color: var(--gold);
    position: absolute;
    left: 0;
}

/* Pop-up: same background as game board — gameboard-bg.png with dark overlay; centered in screen */
.popup {
    background:
        linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.55)),
        url('../img/gameboard-bg.png') center center / cover no-repeat;
    border: 2px solid var(--gold);
    border-radius: 10px;
    padding: 28px 32px;
    width: var(--popup-width);
    max-width: calc(100% - 40px);
    margin: auto;
    box-shadow:
        inset 0 1px 0 rgba(212, 168, 74, 0.2),
        inset 0 -1px 0 rgba(0, 0, 0, 0.4),
        0 0 0 1px var(--gold-dark),
        0 12px 48px rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.popup--start .logo-img {
    display: block;
    max-width: 100%;
    width: min(280px, 85vw);
    height: auto;
    object-fit: contain;
}

.popup--start .grid-size-select {
    display: flex !important;
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 10px;
    justify-content: center;
    align-items: stretch;
}

.popup--over {
    border-color: rgba(229, 57, 53, 0.6);
}

.popup h1 {
    font-family: 'Cinzel Decorative', serif;
    font-size: clamp(28px, 7vw, 34px);
    font-weight: 700;
    margin: 0 0 10px 0;
    background: linear-gradient(135deg, var(--gold-bright), var(--gold-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    text-align: center;
}

.popup p {
    color: var(--text-muted);
    margin-bottom: 24px;
    text-align: center;
    line-height: 1.6;
    font-size: 14px;
}

.popup p.tagline {
    font-style: italic;
    color: var(--text);
    opacity: 0.95;
    letter-spacing: 0.02em;
}

.grid-size-select {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-bottom: 28px;
}

.grid-size-option {
    background: transparent;
    color: var(--text);
    border: 2px solid var(--gold-dark);
    padding: 12px 16px;
    font-size: 14px;
    font-family: inherit;
    font-weight: 600;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s, box-shadow 0.2s;
    border-radius: 6px;
}

.grid-size-option:hover {
    border-color: var(--gold);
    color: var(--gold-light);
}

.grid-size-option.selected {
    border-color: var(--gold);
    color: var(--gold-light);
    box-shadow: 0 0 14px rgba(184, 148, 31, 0.25);
}

.btn {
    background: transparent;
    color: var(--gold-light);
    border: 2px solid var(--gold);
    padding: 14px 44px;
    font-size: 16px;
    font-family: inherit;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: 0.2s;
    border-radius: 6px;
    box-shadow:
        0 0 12px rgba(184, 148, 31, 0.1),
        inset 0 1px 0 rgba(212, 168, 74, 0.1);
}

.btn:hover {
    background: var(--gold);
    color: var(--bg-navy-dark);
    box-shadow:
        0 0 24px rgba(184, 148, 31, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn--primary {
    border-width: 2px;
    box-shadow:
        0 0 16px rgba(184, 148, 31, 0.2),
        inset 0 1px 0 rgba(212, 168, 74, 0.15);
}

.btn--primary:hover {
    box-shadow:
        0 0 28px rgba(184, 148, 31, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.winner-text--p1 { color: var(--p1); text-shadow: 0 0 12px var(--p1-glow); }
.winner-text--p2 { color: var(--p2); text-shadow: 0 0 12px var(--p2-glow); }

/* ========== Responsive: all screen sizes and orientations ========== */
/*
 * Partitions:
 * • Small Mobile (≤480px)
 * • Mobile (481px–640px)
 * • Tablet Portrait (641px–768px)
 * • Tablet Landscape (769px–1024px)
 * • Desktop (≥1025px)
 * • Landscape Mobile (orientation: landscape)
 */

/* Small Mobile (≤480px) */
@media (max-width: 480px) {
    :root {
        --spacing: 8px;
        --popup-width: 300px;
        --popup-height: min(380px, calc(100dvh - 24px));
    }
    #game-container {
        width: 98vmin;
        max-width: none;
        height: 98vmin;
        min-height: 280px;
    }
    .corner-btn {
        width: 40px;
        height: 40px;
        border-radius: 8px;
    }
    .corner-btn svg {
        width: 20px;
        height: 20px;
    }
    .corner-buttons .corner-btn--home { top: var(--spacing); left: var(--spacing); }
    .corner-buttons .corner-btn--reset { top: var(--spacing); right: calc(var(--spacing) + 44px); }
    .corner-buttons .corner-btn--help { top: var(--spacing); right: var(--spacing); }
    .game-header {
        margin: var(--spacing);
        margin-bottom: 12px;
        gap: 10px;
    }
    .player-badge {
        padding: 8px 12px;
        font-size: 13px;
        letter-spacing: 0.12em;
    }
    .player-badge .dot {
        width: 10px;
        height: 10px;
    }
    .board-wrapper {
        margin: var(--spacing);
        padding: 4px;
    }
    .board-wrapper::before { inset: 4px; }
    .board-wrapper::after { inset: 6px; }
    .screen { padding: 12px; }
    .popup {
        padding: 20px 24px;
        width: min(var(--popup-width), calc(100% - 24px));
        max-width: calc(100% - 24px);
    }
    .popup h1 { font-size: clamp(22px, 6vw, 28px); }
    .popup p, .help-list { font-size: 13px; }
    .popup p.tagline { font-size: 12px; }
    .help-list { margin-bottom: 18px; }
    .help-list li { margin-bottom: 8px; }
    .popup--help { padding: 16px 20px; }
    .popup--help .help-list { line-height: 1.6; }
    .popup--help .btn { margin-top: 4px; }
    .grid-size-option {
        padding: 10px 12px;
        font-size: 12px;
    }
    .btn { padding: 12px 32px; font-size: 14px; }
    .popup--start .logo-img { width: min(220px, 78vw); }
}

/* Mobile (481px–640px) */
@media (min-width: 481px) and (max-width: 640px) {
    :root {
        --spacing: 10px;
        --popup-width: 320px;
        --popup-height: min(400px, calc(100dvh - 32px));
    }
    #game-container {
        width: 96vmin;
        max-width: none;
        height: 96vmin;
        min-height: 320px;
    }
    .corner-btn {
        width: 42px;
        height: 42px;
    }
    .corner-buttons .corner-btn--reset { right: calc(var(--spacing) + 46px); }
    .game-header { margin-bottom: 14px; gap: 12px; }
    .player-badge {
        padding: 9px 14px;
        font-size: 14px;
        letter-spacing: 0.14em;
    }
    .player-badge .dot { width: 12px; height: 12px; }
    .board-wrapper { padding: 4px; }
    .board-wrapper::after { inset: 6px; }
    .screen { padding: 16px; }
    .popup {
        padding: 24px 28px;
        max-width: calc(100% - 32px);
    }
    .popup h1 { font-size: clamp(24px, 6.5vw, 30px); }
    .popup p, .help-list { font-size: 13px; }
    .grid-size-option { padding: 10px 14px; font-size: 13px; }
    .btn { padding: 13px 36px; font-size: 15px; }
    .popup--start .logo-img { width: min(240px, 80vw); }
}

/* Tablet Portrait (641px–768px) */
@media (min-width: 641px) and (max-width: 768px) {
    :root { --spacing: 12px; --popup-width: 360px; --popup-height: min(420px, calc(100dvh - 40px)); }
    #game-container {
        width: 92vmin;
        max-width: 480px;
        height: 92vmin;
        min-height: 380px;
    }
    .game-header { margin-bottom: 18px; }
    .board-wrapper { padding: 5px; }
    .screen { padding: 20px; }
    .popup { padding: 26px 30px; }
    .popup h1 { font-size: clamp(26px, 5vw, 32px); }
}

/* Tablet Landscape (769px–1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    #game-container {
        width: 88vmin;
        max-width: 520px;
        height: 88vmin;
        min-height: 400px;
    }
    .game-header { margin-bottom: 20px; }
}

/* Desktop (≥1025px) */
@media (min-width: 1025px) {
    #game-container {
        width: 95vmin;
        max-width: 540px;
        height: 95vmin;
        min-height: 420px;
    }
}

/* Landscape Mobile (orientation: landscape) — mobile in landscape */
@media (orientation: landscape) and (max-width: 640px) {
    :root { --spacing: 8px; --popup-width: 320px; --popup-height: min(320px, calc(100dvh - 24px)); }
    #app-viewport { align-items: flex-start; padding-top: max(env(safe-area-inset-top), 6px); overflow-y: auto; }
    #game-container {
        width: 95vmin;
        max-width: min(540px, 90vw);
        height: auto;
        min-height: 0;
        max-height: none;
    }
    .game-header { margin: var(--spacing); margin-bottom: 10px; gap: 10px; }
    .player-badge { padding: 8px 12px; font-size: 13px; letter-spacing: 0.1em; }
    .player-badge .dot { width: 11px; height: 11px; }
    .board-wrapper { margin: var(--spacing); padding: 4px; }
    .board-wrapper::before { inset: 4px; }
    .board-wrapper::after { inset: 6px; }
    .corner-btn { width: 40px; height: 40px; border-radius: 8px; }
    .corner-btn svg { width: 20px; height: 20px; }
    .corner-buttons .corner-btn--reset { right: calc(var(--spacing) + 44px); }
    .screen { padding: 14px; }
    .popup { padding: 18px 24px; max-width: min(400px, calc(100% - 24px)); }
    .popup h1 { font-size: clamp(22px, 5vh, 28px); }
    .popup p, .help-list { font-size: 12px; }
    .grid-size-option { padding: 8px 12px; font-size: 12px; }
    .btn { padding: 11px 28px; font-size: 13px; }
    .popup--start .logo-img { width: min(200px, 55vw); }
}

/* Landscape Mobile: short viewport (phone in landscape, height ≤500px) */
@media (orientation: landscape) and (max-height: 500px) {
    :root { --spacing: 6px; --popup-width: 320px; --popup-height: min(280px, calc(100dvh - 24px)); }
    #app-viewport { align-items: flex-start; padding-top: max(env(safe-area-inset-top), 6px); overflow-y: auto; }
    #game-container {
        width: 95vmin;
        max-width: min(540px, 90vw);
        height: auto;
        min-height: 0;
        max-height: none;
    }
    .game-header {
        margin: var(--spacing);
        margin-bottom: 8px;
        gap: 10px;
    }
    .player-badge {
        padding: 6px 12px;
        font-size: 12px;
        letter-spacing: 0.1em;
    }
    .player-badge .dot { width: 10px; height: 10px; }
    .board-wrapper {
        margin: var(--spacing);
        padding: 3px;
    }
    .board-wrapper::before { inset: 3px; }
    .board-wrapper::after { inset: 5px; }
    .corner-btn {
        width: 38px;
        height: 38px;
        border-radius: 8px;
    }
    .corner-btn svg { width: 18px; height: 18px; }
    .corner-buttons .corner-btn--home { top: var(--spacing); left: var(--spacing); }
    .corner-buttons .corner-btn--reset { top: var(--spacing); right: calc(var(--spacing) + 42px); }
    .corner-buttons .corner-btn--help { top: var(--spacing); right: var(--spacing); }
    .screen { padding: 12px; }
    .popup {
        padding: 16px 24px;
        max-width: min(400px, calc(100% - 24px));
    }
    .popup h1 { font-size: clamp(20px, 4vh, 26px); }
    .popup p, .help-list { font-size: 12px; margin-bottom: 12px; }
    .help-list { margin-bottom: 14px; }
    .popup--help { padding: 14px 20px; }
    .grid-size-option { padding: 8px 12px; font-size: 12px; }
    .btn { padding: 10px 28px; font-size: 13px; }
    .popup--start .logo-img { width: min(180px, 50vw); }
}

/* Landscape Mobile — very short viewport (e.g. keyboard up) */
@media (orientation: landscape) and (max-height: 400px) {
    :root { --popup-height: min(240px, calc(100dvh - 16px)); }
    .game-header { margin-bottom: 6px; }
    .player-badge { padding: 5px 10px; font-size: 11px; }
    .board-wrapper { margin: var(--spacing); padding: 2px; }
    .board-wrapper::after { inset: 4px; }
    .popup { padding: 12px 20px; }
    .popup h1 { font-size: 18px; }
    .popup--help { padding: 10px 16px; }
    .popup--help .help-list { font-size: 11px; margin-bottom: 10px; }
    .popup--help .help-list li { margin-bottom: 6px; }
}