/* =============================================================================
 * Feed the Agent snake — UI chrome
 * Coding-terminal theme: near-black backdrop, monospace everywhere,
 * terminal-green + Cloudflare-orange accents. Kept lightweight/performant.
 * ========================================================================== */

:root {
	--cf-orange: #f6821f;
	--cf-amber: #fbad41;
	--term-green: #4ee38a;
	--term-green-dim: #2f8f5a;
	--bg: #050706;
	--panel: rgba(78, 227, 138, 0.035);
	--panel-line: rgba(120, 200, 150, 0.14);
	--text: #cfe8d6;
	--muted: #6f8a78;
	--radius: 8px;
	--mono: 'JetBrains Mono', ui-monospace, 'SF Mono', 'Menlo', 'Consolas', monospace;
}

* {
	box-sizing: border-box;
}

html,
body {
	margin: 0;
	min-height: 100%;
}

body {
	background:
		radial-gradient(1100px 700px at 18% -10%, rgba(246, 130, 31, 0.10), transparent 62%),
		radial-gradient(900px 620px at 92% 8%, rgba(78, 227, 138, 0.06), transparent 60%),
		linear-gradient(180deg, #070a08 0%, var(--bg) 55%, #030403 100%);
	background-attachment: fixed;
	color: var(--text);
	font-family: var(--mono);
	font-size: 14px;
	line-height: 1.5;
	-webkit-font-smoothing: antialiased;
}

/* Faint scanline overlay for CRT feel — cheap, fixed, non-animated. */
body::before {
	content: '';
	position: fixed;
	inset: 0;
	pointer-events: none;
	z-index: 9999;
	background: repeating-linear-gradient(
		180deg,
		rgba(0, 0, 0, 0) 0px,
		rgba(0, 0, 0, 0) 2px,
		rgba(0, 0, 0, 0.15) 3px
	);
	opacity: 0.35;
}

.app {
	max-width: 1420px;
	margin: 0 auto;
	padding: 22px clamp(14px, 3vw, 32px) 32px;
}

/* --- top bar ------------------------------------------------------------- */

.topbar {
	display: flex;
	flex-wrap: wrap;
	gap: 18px;
	align-items: center;
	justify-content: space-between;
	padding-bottom: 18px;
	border-bottom: 1px solid var(--panel-line);
}

.brand {
	display: flex;
	align-items: center;
	gap: 14px;
	min-width: 0;
}

.brand__mark {
	width: 58px;
	height: 36px;
	flex: none;
	filter: drop-shadow(0 6px 14px rgba(246, 130, 31, 0.35));
}

.brand__text {
	display: flex;
	flex-direction: column;
	min-width: 0;
}

.brand__text strong {
	font-size: 18px;
	font-weight: 800;
	letter-spacing: -0.01em;
	color: var(--term-green);
}

/* terminal prompt marker before the title */
.brand__text strong::before {
	content: '~/ ';
	color: var(--muted);
	font-weight: 500;
}

.brand__text span {
	color: var(--muted);
	font-size: 12px;
}

.stats {
	display: flex;
	gap: 10px;
	margin: 0;
	flex-wrap: wrap;
}

.stat {
	min-width: 86px;
	padding: 8px 14px;
	border: 1px solid var(--panel-line);
	border-radius: var(--radius);
	background: rgba(78, 227, 138, 0.04);
	box-shadow: inset 0 1px 0 rgba(120, 200, 150, 0.06);
}

.stat--wide {
	min-width: 120px;
}

.stat dt {
	color: var(--muted);
	font-size: 10.5px;
	font-weight: 600;
	letter-spacing: 0.09em;
	text-transform: uppercase;
}

.stat dt::before {
	content: '$ ';
	color: var(--term-green-dim);
}

.stat dd {
	margin: 2px 0 0;
	font-family: var(--mono);
	font-size: 17px;
	font-weight: 700;
	color: var(--text);
}

#score {
	color: var(--term-green);
}

/* --- layout -------------------------------------------------------------- */

.layout {
	display: grid;
	grid-template-columns: minmax(0, 1fr) 310px;
	gap: 22px;
	margin-top: 22px;
	align-items: start;
}

@media (max-width: 1080px) {
	.layout {
		grid-template-columns: minmax(0, 1fr);
	}
}

/* --- canvas frame (a terminal window) ------------------------------------ */

.stage__frame {
	position: relative;
	border-radius: var(--radius);
	padding: 10px;
	background: linear-gradient(180deg, #10140f 0%, #0a0d0b 100%);
	border: 1px solid var(--panel-line);
	box-shadow:
		0 1px 0 rgba(120, 200, 150, 0.08) inset,
		0 30px 60px -22px rgba(0, 0, 0, 0.9);
}

/* fake terminal title-bar dots */
.stage__frame::before {
	content: '';
	position: absolute;
	top: -1px;
	left: 12px;
	width: 42px;
	height: 8px;
	margin-top: 1px;
	border-radius: 4px;
	background:
		radial-gradient(circle 4px at 4px 4px, #ff5f56 60%, transparent 62%),
		radial-gradient(circle 4px at 19px 4px, #ffbd2e 60%, transparent 62%),
		radial-gradient(circle 4px at 34px 4px, #27c93f 60%, transparent 62%);
	opacity: 0;
}

#game {
	display: block;
	width: 100%;
	height: auto;
	aspect-ratio: 1152 / 768;
	border-radius: 4px;
	background: #050706;
	box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.7), 0 14px 30px -14px rgba(0, 0, 0, 0.8) inset;
	touch-action: none;
	cursor: crosshair;
}

/* --- overlay ------------------------------------------------------------- */

.overlay {
	position: absolute;
	inset: 10px;
	display: grid;
	place-items: center;
	border-radius: 4px;
	background: rgba(4, 6, 5, 0.78);
	backdrop-filter: blur(5px) saturate(110%);
	-webkit-backdrop-filter: blur(5px) saturate(110%);
	opacity: 0;
	visibility: hidden;
	transition: opacity 0.22s ease, visibility 0.22s;
}

.overlay.is-open {
	opacity: 1;
	visibility: visible;
}

.card {
	width: min(440px, 84%);
	padding: 28px 30px 24px;
	text-align: left;
	border: 1px solid var(--panel-line);
	border-radius: var(--radius);
	background: rgba(8, 12, 9, 0.96);
	box-shadow:
		inset 0 1px 0 rgba(120, 200, 150, 0.08),
		0 26px 50px -18px rgba(0, 0, 0, 0.85);
}

.card h2 {
	margin: 0 0 8px;
	font-size: 24px;
	font-weight: 800;
	letter-spacing: -0.01em;
	color: var(--cf-amber);
}

/* terminal error prefix on the game-over title */
.card h2::before {
	content: '> ';
	color: var(--term-green-dim);
}

.card p {
	margin: 0;
	color: var(--muted);
	font-size: 13px;
}

.card__stats[hidden] {
	display: none;
}

.card__stats {
	display: flex;
	justify-content: flex-start;
	gap: 26px;
	margin: 16px 0 4px;
	color: var(--muted);
	font-size: 12px;
}

.card__stats b {
	display: block;
	font-family: var(--mono);
	font-size: 24px;
	color: var(--term-green);
}

.card__hint {
	margin-top: 14px !important;
	font-size: 12px !important;
	opacity: 0.7;
}

.card__hint::before {
	content: '# ';
	color: var(--term-green-dim);
}

.btn {
	margin-top: 20px;
	padding: 10px 26px;
	border: 1px solid rgba(246, 130, 31, 0.6);
	border-radius: var(--radius);
	background: rgba(246, 130, 31, 0.12);
	color: var(--cf-amber);
	font: inherit;
	font-family: var(--mono);
	font-weight: 700;
	font-size: 14px;
	cursor: pointer;
	transition: transform 0.12s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn::before {
	content: '$ ';
	color: var(--term-green-dim);
}

.btn:hover {
	background: rgba(246, 130, 31, 0.22);
	box-shadow: 0 0 18px -4px rgba(246, 130, 31, 0.7);
}

.btn:active {
	transform: translateY(1px) scale(0.99);
}

.btn:focus-visible {
	outline: 2px solid var(--term-green);
	outline-offset: 3px;
}

/* --- side panel ---------------------------------------------------------- */

.panel {
	display: flex;
	flex-direction: column;
	gap: 16px;
}

.panel__block {
	padding: 18px;
	border: 1px solid var(--panel-line);
	border-radius: var(--radius);
	background: var(--panel);
	box-shadow: inset 0 1px 0 rgba(120, 200, 150, 0.04);
}

.panel__block--muted p {
	margin: 0;
	color: var(--muted);
	font-size: 12px;
	line-height: 1.62;
}

.panel h3 {
	margin: 0 0 12px;
	font-size: 11px;
	font-weight: 700;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--term-green);
}

.panel h3::before {
	content: '// ';
	color: var(--muted);
}

.field {
	display: block;
	margin-bottom: 12px;
}

.field span {
	display: block;
	margin-bottom: 5px;
	font-size: 11px;
	color: var(--muted);
	letter-spacing: 0.05em;
	text-transform: uppercase;
}

.field input {
	width: 100%;
	padding: 8px 11px;
	border: 1px solid var(--panel-line);
	border-radius: var(--radius);
	background: rgba(0, 0, 0, 0.4);
	color: var(--term-green);
	font: inherit;
	font-family: var(--mono);
	font-size: 13px;
}

.field input:focus {
	outline: none;
	border-color: var(--term-green);
	box-shadow: 0 0 0 3px rgba(78, 227, 138, 0.15);
}

.board {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 2px;
}

.board li {
	display: grid;
	grid-template-columns: 22px 1fr auto;
	align-items: center;
	gap: 9px;
	padding: 6px 8px;
	border-radius: 6px;
	font-size: 13px;
}

.board li:nth-child(odd) {
	background: rgba(78, 227, 138, 0.03);
}

.board li:first-child .board__rank {
	color: var(--cf-amber);
}

.board__rank {
	font-family: var(--mono);
	font-size: 12px;
	color: var(--muted);
}

.board__name {
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.board__score {
	font-family: var(--mono);
	font-weight: 700;
	color: var(--term-green);
}

.board li.board__empty {
	display: block;
	padding: 8px;
	color: var(--muted);
	font-style: italic;
	font-size: 13px;
}

.panel__note {
	margin: 12px 0 0;
	font-size: 11.5px;
	color: var(--muted);
	line-height: 1.55;
}

.keys {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 9px;
}

.keys li {
	display: flex;
	align-items: center;
	gap: 5px;
}

.keys span {
	margin-left: auto;
	color: var(--muted);
	font-size: 12px;
}

kbd {
	min-width: 25px;
	padding: 3px 7px;
	border: 1px solid var(--panel-line);
	border-bottom-width: 2px;
	border-radius: 5px;
	background: rgba(78, 227, 138, 0.06);
	color: var(--text);
	font-family: var(--mono);
	font-size: 11px;
	text-align: center;
	box-shadow: 0 1px 0 rgba(0, 0, 0, 0.5);
}

code {
	padding: 1px 5px;
	border-radius: 4px;
	background: rgba(78, 227, 138, 0.1);
	color: var(--term-green);
	font-family: var(--mono);
	font-size: 0.9em;
}

/* --- footer -------------------------------------------------------------- */

.footer {
	display: flex;
	flex-wrap: wrap;
	gap: 10px 24px;
	justify-content: space-between;
	margin-top: 26px;
	padding-top: 16px;
	border-top: 1px solid var(--panel-line);
	color: var(--muted);
	font-size: 12px;
}

/* --- player legend ------------------------------------------------------- */

.legend {
	list-style: none;
	margin: 0 0 10px;
	padding: 0;
	display: grid;
	gap: 8px;
}

.legend__row {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 8px 10px;
	border: 1px solid var(--panel-line);
	border-radius: var(--radius);
	background: rgba(255, 255, 255, 0.02);
	transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}

/* the snake the local player controls gets a glowing highlight */
.legend__row.is-you {
	border-color: rgba(78, 227, 138, 0.55);
	background: rgba(78, 227, 138, 0.08);
	box-shadow: 0 0 0 1px rgba(78, 227, 138, 0.25), 0 0 18px -6px rgba(78, 227, 138, 0.5);
}

.legend__row.is-you .legend__label::after {
	content: ' · YOU';
	color: var(--term-green);
	font-weight: 700;
}

.legend__swatch {
	width: 20px;
	height: 20px;
	border-radius: 50%;
	flex: 0 0 auto;
	border: 2px solid rgba(255, 255, 255, 0.35);
}

.legend__swatch--orange {
	background: radial-gradient(circle at 35% 30%, #ffd27a, #f6821f 55%, #7a3402);
	box-shadow: 0 0 12px -2px rgba(246, 130, 31, 0.8);
}

.legend__swatch--teal {
	background: radial-gradient(circle at 35% 30%, #c8fbff, #22d3ee 55%, #0b3d6b);
	box-shadow: 0 0 12px -2px rgba(34, 211, 238, 0.85);
}

.legend__label {
	flex: 1 1 auto;
	color: var(--text);
}

.legend__label b {
	font-weight: 700;
}

.legend__role {
	font-size: 12px;
	color: var(--muted);
	padding: 2px 8px;
	border-radius: 999px;
	border: 1px solid var(--panel-line);
	white-space: nowrap;
}

/* --- voice agent toggle -------------------------------------------------- */

.toggle {
	display: flex;
	align-items: center;
	gap: 10px;
	cursor: pointer;
	user-select: none;
	margin-bottom: 8px;
}

.toggle input {
	position: absolute;
	opacity: 0;
	width: 0;
	height: 0;
}

.toggle__track {
	position: relative;
	flex: 0 0 auto;
	width: 40px;
	height: 22px;
	border-radius: 999px;
	background: rgba(255, 255, 255, 0.08);
	border: 1px solid var(--panel-line);
	transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.toggle__thumb {
	position: absolute;
	top: 2px;
	left: 2px;
	width: 16px;
	height: 16px;
	border-radius: 50%;
	background: var(--muted);
	transition: transform 0.2s, background 0.2s;
}

.toggle input:checked + .toggle__track {
	background: rgba(246, 130, 31, 0.22);
	border-color: rgba(246, 130, 31, 0.6);
	box-shadow: 0 0 14px -4px rgba(246, 130, 31, 0.7);
}

.toggle input:checked + .toggle__track .toggle__thumb {
	transform: translateX(18px);
	background: var(--cf-amber);
}

.toggle input:focus-visible + .toggle__track {
	outline: 2px solid var(--term-green);
	outline-offset: 2px;
}

.toggle__label {
	flex: 1 1 auto;
	color: var(--text);
	font-size: 13px;
}

/* --- tuning sliders ------------------------------------------------------ */

.slider {
	margin-bottom: 14px;
}

.slider:last-child {
	margin-bottom: 0;
}

.slider__head {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	gap: 8px;
	margin-bottom: 6px;
}

.slider__head label {
	color: var(--text);
	font-size: 13px;
	font-weight: 600;
}

.slider__head output {
	color: var(--cf-amber);
	font-size: 13px;
	font-weight: 700;
	font-variant-numeric: tabular-nums;
}

.slider input[type="range"] {
	-webkit-appearance: none;
	appearance: none;
	width: 100%;
	height: 6px;
	border-radius: 999px;
	background: linear-gradient(90deg, rgba(246, 130, 31, 0.55), rgba(78, 227, 138, 0.4));
	outline: none;
	cursor: pointer;
}

.slider input[type="range"]::-webkit-slider-thumb {
	-webkit-appearance: none;
	appearance: none;
	width: 16px;
	height: 16px;
	border-radius: 50%;
	background: var(--cf-amber);
	border: 2px solid #1a120a;
	box-shadow: 0 0 10px -2px rgba(246, 130, 31, 0.9);
}

.slider input[type="range"]::-moz-range-thumb {
	width: 16px;
	height: 16px;
	border-radius: 50%;
	background: var(--cf-amber);
	border: 2px solid #1a120a;
	box-shadow: 0 0 10px -2px rgba(246, 130, 31, 0.9);
}

.slider input[type="range"]:focus-visible {
	box-shadow: 0 0 0 2px var(--term-green);
}

.slider__hint {
	margin: 6px 0 0;
	color: var(--muted);
	font-size: 12px;
}

@media (prefers-reduced-motion: reduce) {
	* {
		transition: none !important;
	}
}