.occh-root {
	--occh-sq: 44px;
	--occh-light: #f0d9b5;
	--occh-dark: #b58863;
	--occh-accent: #8a5a2b;
	box-sizing: border-box;
	max-width: 720px;
	margin: 10px auto;
	padding: 12px;
	border-radius: 14px;
	background: #fffaf2;
	color: #2b2118;
	font-family: inherit;
	line-height: 1.35;
	box-shadow: 0 6px 22px rgba(0, 0, 0, .14);
	-webkit-tap-highlight-color: transparent;
}
.occh-root *, .occh-root *::before, .occh-root *::after { box-sizing: border-box; }

/* Full-screen mode: fills the visible screen, no page scrolling behind it */
html.occh-noscroll, html.occh-noscroll body { overflow: hidden !important; }
.occh-root.occh-full {
	position: fixed;
	inset: 0;
	z-index: 999999;
	margin: 0;
	max-width: none !important;
	width: 100%;
	height: 100vh;
	height: 100dvh;
	border-radius: 0;
	overflow: auto;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: max(8px, env(safe-area-inset-top)) max(8px, env(safe-area-inset-right)) max(8px, env(safe-area-inset-bottom)) max(8px, env(safe-area-inset-left));
}

.occh-title { margin: 0 0 4px; font-size: 1.5em; color: #2b2118; }
.occh-h4 { margin: 16px 0 8px; font-size: 1em; color: #2b2118; }
.occh-sub, .occh-empty { margin: 0 0 12px; color: #6b5a4a; font-size: .95em; }
.occh-label { display: block; font-weight: 600; margin-bottom: 10px; }
.occh-input {
	display: block; width: 100%; margin-top: 4px; padding: 10px 12px;
	border: 2px solid #d9c4a6; border-radius: 10px; background: #fff;
	font-size: 16px; color: #2b2118;
}
.occh-input:focus { outline: none; border-color: var(--occh-accent); }

.occh-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.occh-btn {
	appearance: none; cursor: pointer; padding: 10px 16px;
	border: 2px solid var(--occh-accent); border-radius: 10px;
	background: #fff; color: var(--occh-accent);
	font-size: 1em; font-weight: 600; line-height: 1.2;
	transition: transform .08s ease, background .15s ease;
	touch-action: manipulation;
}
.occh-btn:hover { background: #fbeedc; }
.occh-btn:active { transform: translateY(1px); }
.occh-primary { background: var(--occh-accent); color: #fff; }
.occh-primary:hover { background: #6f4620; }
.occh-small { padding: 6px 12px; font-size: .9em; }
.occh-disabled { opacity: .6; cursor: default; pointer-events: none; }

.occh-msg { margin: 4px 0; min-height: 1.2em; color: #b3261e; font-size: .92em; }

.occh-list { display: flex; flex-direction: column; gap: 6px; }
.occh-item {
	display: flex; align-items: center; justify-content: space-between; gap: 10px;
	padding: 8px 12px; border-radius: 10px; background: #fff; border: 1px solid #ecdcc3;
}
.occh-item-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* In-game column: JS sets its width so everything fits the screen */
.occh-col { margin: 0 auto; width: 100%; max-width: 100%; }

.occh-bar {
	display: flex; align-items: center; gap: 8px;
	padding: 4px 8px; margin: 3px 0; border-radius: 8px;
	background: #fff; border: 2px solid transparent; min-height: 34px;
}
.occh-bar.occh-turn { border-color: var(--occh-accent); background: #fff3e4; }
.occh-name { flex: 0 1 auto; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.occh-cap { flex: 1; text-align: right; white-space: nowrap; overflow: hidden; }
.occh-disc { width: 14px; height: 14px; border-radius: 50%; flex: none; border: 2px solid #333; }
.occh-disc.occh-dw { background: #fff; }
.occh-disc.occh-db { background: #222; }

.occh-boardwrap {
	position: relative;
	width: min(100%, 60vh);
	aspect-ratio: 1 / 1;
	margin: 4px auto;
}
.occh-board {
	display: grid; grid-template-columns: repeat(8, 1fr); grid-template-rows: repeat(8, 1fr);
	width: 100%; height: 100%;
	border: 3px solid #4a2c17; border-radius: 6px; overflow: hidden;
	user-select: none; -webkit-user-select: none; touch-action: manipulation;
}
.occh-sq { position: relative; display: flex; align-items: center; justify-content: center; min-width: 0; min-height: 0; }
.occh-sq.l { background: var(--occh-light); }
.occh-sq.d { background: var(--occh-dark); }
.occh-myturn .occh-sq { cursor: pointer; }
.occh-sq::before { content: ''; position: absolute; inset: 0; pointer-events: none; }
.occh-sq.occh-last::before { background: rgba(255, 226, 60, .5); }
.occh-sq.occh-sel::before { background: rgba(30, 130, 50, .55); }
.occh-sq.occh-check::before { background: radial-gradient(circle, rgba(230, 0, 0, .9) 0%, rgba(230, 0, 0, .5) 45%, rgba(230, 0, 0, 0) 78%); }
.occh-sq.occh-dest::after {
	content: ''; position: absolute; width: 30%; height: 30%; border-radius: 50%;
	background: rgba(20, 90, 30, .45); pointer-events: none; z-index: 3;
}
.occh-sq.occh-cap-dest::after {
	content: ''; position: absolute; inset: 4%; border-radius: 50%;
	border: calc(var(--occh-sq) * .09) solid rgba(20, 90, 30, .5); pointer-events: none; z-index: 3;
}

.occh-coord {
	position: absolute; font-size: calc(var(--occh-sq) * .2); font-weight: 700;
	line-height: 1; opacity: .75; pointer-events: none; z-index: 1;
}
.occh-rank { top: 3%; left: 5%; }
.occh-file { bottom: 3%; right: 5%; }
.occh-sq.l .occh-coord { color: var(--occh-dark); }
.occh-sq.d .occh-coord { color: var(--occh-light); }

.occh-g {
	font-family: "Segoe UI Symbol", "Noto Sans Symbols 2", "Noto Sans Symbols", "Apple Symbols", "DejaVu Sans", "Arial Unicode MS", sans-serif;
	line-height: 1; font-style: normal; font-weight: 400;
}
.occh-gw {
	color: #fff;
	text-shadow: -1px -1px 0 #222, 1px -1px 0 #222, -1px 1px 0 #222, 1px 1px 0 #222, 0 2px 3px rgba(0, 0, 0, .35);
}
.occh-gb {
	color: #1a1a1a;
	text-shadow: 0 1px 1px rgba(255, 255, 255, .3), 0 2px 3px rgba(0, 0, 0, .3);
}
.occh-piece { position: relative; z-index: 2; font-size: calc(var(--occh-sq) * .8); pointer-events: none; }
.occh-gsmall { font-size: 15px; margin-left: -2px; }
.occh-gsmall.occh-gw { text-shadow: -.5px -.5px 0 #222, .5px -.5px 0 #222, -.5px .5px 0 #222, .5px .5px 0 #222; }

.occh-status { margin: 4px 0; font-weight: 700; font-size: .98em; }
.occh-status.occh-over { color: var(--occh-accent); }
.occh-invite { margin: 4px 0; }
.occh-invite-row { display: flex; gap: 6px; align-items: center; }
.occh-invite-row .occh-input { margin: 0; padding: 6px 10px; font-size: 14px; }
.occh-invite-row .occh-btn { flex: none; }

.occh-offer {
	display: flex; flex-wrap: wrap; gap: 6px; align-items: center;
	margin: 4px 0; padding: 6px 8px; border-radius: 8px; background: #fff3e4; font-size: .92em;
}
.occh-controls { margin: 6px 0 0; gap: 6px; }
.occh-controls .occh-btn { flex: 1 1 auto; }

/* Promotion chooser */
.occh-promo {
	position: absolute; inset: 0; z-index: 10;
	display: flex; align-items: center; justify-content: center;
	background: rgba(0, 0, 0, .55); border-radius: 6px;
}
.occh-promo-box { background: #fffaf2; border-radius: 12px; padding: 8px 10px; text-align: center; box-shadow: 0 6px 20px rgba(0, 0, 0, .4); }
.occh-promo-title { font-weight: 700; font-size: .9em; margin-bottom: 4px; }
.occh-promo-row { display: flex; gap: 6px; }
.occh-promo-btn {
	appearance: none; cursor: pointer; border: 2px solid var(--occh-accent); border-radius: 10px;
	background: var(--occh-light); padding: 2px 6px;
}
.occh-promo-btn:hover { background: #fff; }
.occh-promo-g { font-size: calc(var(--occh-sq) * .9); }

@media (max-width: 480px) {
	.occh-root { padding: 8px; border-radius: 10px; margin: 6px auto; }
	.occh-btn { padding: 8px 12px; }
	.occh-small { padding: 6px 10px; }
}