.drop4-app {
	--d4-red: #e53935;
	--d4-yellow: #fdd835;
	--d4-board: #1e50c8;
	--d4-hole: #0d2260;
	--d4-ink: #1b2333;
	--d4-muted: #667085;
	--d4-card: #ffffff;
	--d4-line: #e3e8f2;
	max-width: 560px;
	margin: 1.5em auto;
	color: var(--d4-ink);
	font-family: inherit;
	line-height: 1.4;
}
.drop4-app *, .drop4-app *::before, .drop4-app *::after { box-sizing: border-box; }

.drop4-app .d4-card {
	background: var(--d4-card);
	border-radius: 18px;
	padding: 22px;
	box-shadow: 0 8px 30px rgba(20, 40, 90, .12);
	border: 1px solid var(--d4-line);
}

.drop4-app .d4-title { font-size: 1.7em; font-weight: 800; text-align: center; margin: 0 0 6px; color: var(--d4-ink); }
.drop4-app .d4-sub { text-align: center; color: var(--d4-muted); margin: 0 0 16px; }
.drop4-app .d4-center { text-align: center; justify-content: center; }
.drop4-app .d4-notice { background: #fff4e5; color: #8a4b00; padding: 10px 12px; border-radius: 10px; text-align: center; margin: 0 0 14px; }
.drop4-app .d4-toast { min-height: 1.3em; margin: 10px 0 0; text-align: center; color: #b42318; font-weight: 600; }
.drop4-app .d4-or { text-align: center; color: var(--d4-muted); margin: 18px 0 8px; font-size: .9em; }
.drop4-app .d4-loading { text-align: center; color: var(--d4-muted); }

/* lobby */
.drop4-app .d4-logo { display: flex; justify-content: center; gap: 8px; margin-bottom: 8px; }
.drop4-app .d4-logo .d4-chip { width: 26px; height: 26px; }
.drop4-app .d4-label { display: block; font-weight: 600; margin: 0 0 6px; color: var(--d4-ink); }
.drop4-app .d4-input {
	width: 100%; padding: 12px 14px; font-size: 16px; font-family: inherit;
	border: 2px solid var(--d4-line); border-radius: 10px; background: #fff; color: var(--d4-ink);
	box-shadow: none; margin: 0; height: auto;
}
.drop4-app .d4-input:focus { outline: none; border-color: var(--d4-board); }
.drop4-app .d4-codeinput { text-transform: uppercase; letter-spacing: .15em; }
.drop4-app .d4-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.drop4-app .d4-actions .d4-btn { flex: 1 1 160px; }
.drop4-app .d4-actions.d4-center .d4-btn { flex: 0 1 auto; }
.drop4-app .d4-joinrow { display: flex; gap: 10px; }
.drop4-app .d4-joinrow .d4-input { flex: 1; min-width: 0; }

/* buttons */
.drop4-app .d4-btn {
	-webkit-appearance: none; appearance: none; cursor: pointer;
	border: 0; border-radius: 10px; padding: 12px 18px; margin: 0;
	font: inherit; font-weight: 700; line-height: 1.2; min-height: 0;
	background: #eef2fb; color: #1b2a5c; box-shadow: none; text-transform: none; letter-spacing: 0;
	transition: transform .08s ease, filter .15s ease;
}
.drop4-app .d4-btn:hover:not(:disabled) { filter: brightness(.96); }
.drop4-app .d4-btn:active:not(:disabled) { transform: translateY(1px); }
.drop4-app .d4-btn:disabled { opacity: .55; cursor: default; }
.drop4-app .d4-btn.d4-primary { background: linear-gradient(#2f66e8, #1e50c8); color: #fff; }
.drop4-app .d4-btn.d4-link { background: transparent; color: var(--d4-muted); text-decoration: underline; font-weight: 600; }

/* waiting room */
.drop4-app .d4-code {
	text-align: center; font-size: 2.4em; font-weight: 800; letter-spacing: .2em;
	padding: 10px 0 14px; color: var(--d4-board); font-family: ui-monospace, Menlo, Consolas, monospace;
}
.drop4-app .d4-spinner {
	width: 30px; height: 30px; margin: 18px auto 6px; border-radius: 50%;
	border: 4px solid var(--d4-line); border-top-color: var(--d4-board); animation: d4spin 1s linear infinite;
}
.drop4-app .d4-wait .d4-link { display: block; margin: 8px auto 0; }

/* players bar */
.drop4-app .d4-players { display: flex; align-items: stretch; gap: 8px; margin-bottom: 16px; }
.drop4-app .d4-player {
	flex: 1 1 0; min-width: 0; display: flex; align-items: center; gap: 10px;
	padding: 10px 12px; border-radius: 12px; border: 2px solid var(--d4-line); background: #f8faff;
	transition: border-color .2s, background .2s, box-shadow .2s;
}
.drop4-app .d4-player.active { background: #fff; box-shadow: 0 0 0 3px rgba(30, 80, 200, .12); }
.drop4-app .d4-player.p1.active { border-color: var(--d4-red); }
.drop4-app .d4-player.p2.active { border-color: #f2b705; }
.drop4-app .d4-pinfo { min-width: 0; flex: 1; }
.drop4-app .d4-pname { font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.drop4-app .d4-you { font-weight: 500; color: var(--d4-muted); }
.drop4-app .d4-pscore { font-size: .85em; color: var(--d4-muted); }
.drop4-app .d4-mid { display: flex; flex-direction: column; justify-content: center; align-items: center; font-size: .8em; color: var(--d4-muted); min-width: 52px; text-align: center; }
.drop4-app .d4-round { font-weight: 700; }
.drop4-app .d4-dot { width: 10px; height: 10px; border-radius: 50%; flex: none; background: #c7cdd9; }
.drop4-app .d4-dot.on { background: #22c55e; }
.drop4-app .d4-dot.off { background: #f59e0b; }

/* discs */
.drop4-app .d4-disc { display: block; border-radius: 50%; }
.drop4-app .d4-disc.p1 { background: radial-gradient(circle at 35% 30%, #ff9a94, var(--d4-red) 55%, #b71c1c); }
.drop4-app .d4-disc.p2 { background: radial-gradient(circle at 35% 30%, #fff59d, var(--d4-yellow) 55%, #f9a825); }
.drop4-app .d4-chip { width: 30px; height: 30px; flex: none; }

/* board */
.drop4-app .d4-board {
	display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; padding: 10px;
	background: var(--d4-board); border-radius: 16px;
	box-shadow: inset 0 -4px 0 rgba(0, 0, 0, .22), 0 6px 16px rgba(30, 80, 200, .35);
}
.drop4-app .d4-col {
	-webkit-appearance: none; appearance: none; display: flex; flex-direction: column; gap: 6px;
	margin: 0; padding: 0; border: 0; border-radius: 12px; overflow: hidden; min-height: 0;
	background: transparent; box-shadow: none; cursor: default; opacity: 1 !important; color: inherit;
}
.drop4-app .d4-col:not(:disabled) { cursor: pointer; }
.drop4-app .d4-col:not(:disabled):hover,
.drop4-app .d4-col:not(:disabled):focus-visible { background: rgba(255, 255, 255, .2); outline: none; }
.drop4-app .d4-cell {
	display: block; position: relative; width: 100%; aspect-ratio: 1 / 1; border-radius: 50%;
	background: var(--d4-hole); box-shadow: inset 0 3px 6px rgba(0, 0, 0, .55);
}
.drop4-app .d4-cell .d4-disc { position: absolute; inset: 0; box-shadow: inset 0 -3px 5px rgba(0, 0, 0, .25); }
.drop4-app .d4-disc.new { animation: d4drop .55s cubic-bezier(.5, 0, .9, .5); }
.drop4-app .d4-disc.win { box-shadow: 0 0 0 3px #fff, 0 0 16px 5px rgba(255, 255, 255, .85); animation: d4pulse 1s ease-in-out infinite; }
.drop4-app .d4-disc.new.win { animation: d4drop .55s cubic-bezier(.5, 0, .9, .5), d4pulse 1s ease-in-out .55s infinite; }

/* status */
.drop4-app .d4-status { text-align: center; font-weight: 800; font-size: 1.15em; margin: 16px 0 4px; min-height: 1.4em; }
.drop4-app .d4-status.mine { color: var(--d4-board); }
.drop4-app .d4-status.good { color: #15803d; }
.drop4-app .d4-status.bad { color: #b42318; }
.drop4-app .d4-game .d4-actions { margin-top: 10px; }

@keyframes d4spin { to { transform: rotate(360deg); } }
@keyframes d4pulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.08); } }
@keyframes d4drop {
	0% { transform: translateY(calc(var(--fall, 3) * -115%)); }
	70% { transform: translateY(0); }
	82% { transform: translateY(-9%); }
	100% { transform: translateY(0); }
}

@media (max-width: 440px) {
	.drop4-app .d4-card { padding: 14px; }
	.drop4-app .d4-players { flex-wrap: wrap; }
	.drop4-app .d4-mid { order: -1; flex-basis: 100%; flex-direction: row; gap: 10px; }
	.drop4-app .d4-board { gap: 4px; padding: 7px; }
	.drop4-app .d4-col { gap: 4px; }
}
@media (prefers-reduced-motion: reduce) {
	.drop4-app .d4-disc.new, .drop4-app .d4-disc.new.win, .drop4-app .d4-disc.win, .drop4-app .d4-spinner { animation: none; }
}

/* ---- fit-to-screen layout ---- */
.drop4-app .d4-layout { display: grid; grid-template-columns: 1fr; grid-template-areas: "players" "board" "info"; }
.drop4-app .d4-layout .d4-players { grid-area: players; }
.drop4-app .d4-layout .d4-board { grid-area: board; justify-self: center; max-width: 100%; }
.drop4-app .d4-layout .d4-info { grid-area: info; }

.drop4-app.d4-compact .d4-card { padding: 12px; }
.drop4-app.d4-compact { margin: 8px auto; }
.drop4-app.d4-compact .d4-players { margin-bottom: 8px; gap: 6px; }
.drop4-app.d4-compact .d4-player { padding: 6px 10px; }
.drop4-app.d4-compact .d4-chip { width: 24px; height: 24px; }
.drop4-app.d4-compact .d4-mid { min-width: 44px; }
.drop4-app.d4-compact .d4-status { margin: 8px 0 2px; font-size: 1em; }
.drop4-app.d4-compact .d4-game .d4-actions { margin-top: 4px; }
.drop4-app.d4-compact .d4-game .d4-btn { padding: 8px 14px; }
.drop4-app.d4-compact .d4-toast { margin-top: 4px; min-height: 0; }
.drop4-app.d4-compact .d4-rnote { margin: 4px 0; }

/* short, wide screens (phones on their side): board on the right, info on the left */
.drop4-app.d4-landscape { max-width: 880px; }
.drop4-app.d4-landscape .d4-layout {
	grid-template-columns: minmax(170px, 1fr) auto;
	grid-template-areas: "players board" "info board";
	grid-template-rows: auto 1fr; column-gap: 16px;
}
.drop4-app.d4-landscape .d4-players { flex-direction: column; flex-wrap: nowrap; }
.drop4-app.d4-landscape .d4-mid { order: -1; flex-basis: auto; flex-direction: row; gap: 10px; }
.drop4-app.d4-landscape .d4-layout .d4-board { align-self: center; max-width: none; }
.drop4-app.d4-landscape .d4-info { align-self: start; }
.drop4-app.d4-landscape .d4-game .d4-actions { justify-content: center; }