:root {
	--bg: radial-gradient(circle at 20% 20%, #123, #010b17 60%);
	--panel: linear-gradient(180deg, #0f1c2d 0%, #0b1020 100%);
	--accent: #11d7ff;
	--accent-2: #ff7b11;
	--text: #d8f1ff;
	--muted: #7da0c8;
	--danger: #ff4d6d;
	--success: #8dff8a;
	--shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
}

#toast {
	position: fixed;
	top: 14px;
	right: 14px;
	background: rgba(8, 18, 31, 0.95);
	border: 1px solid #123a5c;
	color: var(--text);
	padding: 10px 12px;
	border-radius: 8px;
	box-shadow: var(--shadow);
	font-size: 14px;
	opacity: 0;
	pointer-events: none;
	transition: opacity 180ms ease;
	z-index: 999;
}

#toast.show { opacity: 1; }

* { box-sizing: border-box; }
body {
	margin: 0;
	font-family: 'Orbitron', 'VT323', monospace;
	background: var(--bg);
	color: var(--text);
	min-height: 100vh;
	display: flex;
	flex-direction: column;
	font-size: 16px;
}

header {
	padding: 14px 18px;
	background: linear-gradient(90deg, #04101f, #0b2442 60%, #04101f);
	border-bottom: 2px solid #0af;
	box-shadow: var(--shadow);
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
	flex-wrap: wrap;
	letter-spacing: 1px;
}

header .brand {
	font-size: 22px;
	font-weight: 700;
	color: var(--accent);
	text-shadow: 0 0 8px #0af;
}

header .tagline {
	font-size: 14px;
	color: var(--muted);
	max-width: 520px;
	text-align: right;
}

.layout {
	display: grid;
	grid-template-columns: 320px 1fr;
	gap: 16px;
	padding: 16px;
	flex: 1;
	align-items: stretch;
	min-height: 0;
}

.panel {
	background: var(--panel);
	border: 1px solid #123a5c;
	box-shadow: var(--shadow);
	border-radius: 10px;
	padding: 14px;
	position: relative;
	overflow: hidden;
}

.panel::before {
	content: '';
	position: absolute;
	inset: 0;
	background: linear-gradient(135deg, rgba(17, 215, 255, 0.12), transparent 40%);
	pointer-events: none;
}

h2, h3 {
	margin: 0 0 10px;
	font-size: 18px;
	text-transform: uppercase;
	letter-spacing: 1px;
	color: var(--accent);
}

h3 { color: var(--accent-2); }

label {
	display: block;
	margin-bottom: 4px;
	font-size: 13px;
	color: var(--muted);
}

input, select, button {
	width: 100%;
	padding: 9px 10px;
	margin-bottom: 8px;
	border-radius: 8px;
	border: 1px solid #1f3653;
	background: #0c1626;
	color: var(--text);
	font-family: 'VT323', monospace;
	font-size: 16px;
}

button {
	background: linear-gradient(180deg, #0af, #0368c7);
	color: #e6f7ff;
	font-weight: 700;
	letter-spacing: 0.5px;
	cursor: pointer;
	border: 1px solid #0890ff;
	transition: transform 120ms ease, filter 120ms ease;
}

button:hover { transform: translateY(-1px); filter: brightness(1.05); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.btn-row-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }

.small { font-size: 14px; color: var(--muted); margin: 4px 0 10px; }

.status-bar {
	display: flex;
	gap: 12px;
	row-gap: 8px;
	flex-wrap: wrap;
	font-size: 14px;
	color: var(--muted);
	align-items: center;
}

/* Utility spacing and layout helpers */
.mt-4 { margin-top: 4px; }
.mt-6 { margin-top: 6px; }
.mt-8 { margin-top: 8px; }
.mt-10 { margin-top: 10px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.inline-row { display: flex; align-items: center; gap: 8px; }
.table-label { font-size: 13px; font-weight: 700; color: #b4ffce; letter-spacing: 1px; }
.hr-dashed { border: 0; border-top: 1px dashed rgba(255, 255, 255, 0.2); margin: 12px 0; }

.status-pill {
	background: rgba(17, 215, 255, 0.1);
	padding: 6px 10px;
	border-radius: 999px;
	border: 1px solid #1f3653;
	color: var(--text);
	font-size: 13px;
}

.game-table {
	display: flex;
	flex-direction: column;
	gap: 10px;
	height: 100%;
	max-height: none;
	min-height: 0;
	overflow: visible;
}

.game-grid {
	display: grid;
	grid-template-columns: 2fr 1fr;
	gap: 10px;
	height: 100%;
	min-height: 0;
}

.main-col { display: flex; flex-direction: column; gap: 10px; min-height: 0; }
.strategy-col { display: flex; flex-direction: column; gap: 10px; min-height: 0; }
.strategy-panel { background: #08121f; border: 1px solid #123a5c; border-radius: 8px; padding: 12px; box-shadow: var(--shadow); }

.felt {
	background: radial-gradient(circle at 50% 20%, rgba(0, 200, 140, 0.35), rgba(0, 80, 50, 0.9));
	border: 2px solid #0c583c;
	border-radius: 12px;
	padding: 14px;
	position: relative;
	min-height: 240px;
	overflow: hidden;
	width: 100%;
	max-width: none;
	flex: 1;
	margin: 0 auto;
}

.game-pane { display: flex; flex-direction: column; gap: 8px; height: 100%; flex: 1; min-height: 0; overflow-y: auto; }
#play-pane { overflow: visible; }
#sim-pane { display: block; height: auto; overflow-y: auto; }
.sim-layout { display: block; width: 100%; }
.sim-config, .sim-output { position: relative; z-index: 1; width: 100%; display: block; }
.sim-output { margin-top: 12px; padding-top: 12px; border-top: 1px dashed rgba(255, 255, 255, 0.18); }
.sim-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.sim-grid-wide { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.sim-controls { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-top: 8px; width: 100%; }
.sim-dev-row { display: grid; grid-template-columns: 1.6fr 0.4fr; gap: 8px; align-items: center; }
.sim-dev-row input[type="checkbox"] { width: auto; margin: 0; justify-self: end; }
.sim-results { background: #08121f; border-radius: 8px; padding: 12px; border: 1px solid #123a5c; font-size: 14px; min-height: 60px; margin-top: 12px; clear: both; width: 100%; display: block; }
.sim-note { font-size: 12px; color: var(--muted); margin-top: 8px; clear: both; width: 100%; display: block; }
.sim-preset-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 6px; }
.sim-preset { flex: 1 0 120px; padding: 8px 10px; border-radius: 8px; border: 1px solid #1f3653; background: #0c1626; color: var(--text); font-weight: 700; cursor: pointer; }
.sim-preset:hover { background: #0f2942; border-color: #0af; }
.sim-progress { width: 100%; height: 10px; background: #0c1626; border: 1px solid #1f3653; border-radius: 999px; overflow: hidden; margin-top: 6px; }
.sim-progress-bar { height: 100%; width: 0%; background: linear-gradient(90deg, #0af, #11d7ff); transition: width 120ms ease; }

.learn-grid { display: grid; grid-template-columns: 1.2fr 1.5fr 1fr; gap: 10px; }
.learn-card { background: #08121f; border: 1px solid #123a5c; border-radius: 8px; padding: 12px; box-shadow: var(--shadow); }
.lesson-list { display: grid; gap: 6px; margin: 6px 0 10px; }
.lesson-btn { background: #0c1626; border: 1px solid #1f3653; border-radius: 8px; padding: 8px 10px; color: var(--text); cursor: pointer; text-align: left; }
.lesson-btn.active { border-color: #0af; background: #0f2942; }
.learn-content { background: rgba(17, 215, 255, 0.06); border: 1px solid rgba(17, 215, 255, 0.2); border-radius: 8px; padding: 10px; min-height: 140px; }
.drill-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.drill-options { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 8px; }
.review-list { display: grid; gap: 6px; }
.review-item { background: #0c1626; border: 1px solid #1f3653; border-radius: 8px; padding: 8px 10px; font-size: 14px; }

.felt::after {
	content: '';
	position: absolute;
	inset: 8px;
	border: 1px dashed rgba(255, 255, 255, 0.08);
	border-radius: 10px;
	pointer-events: none;
}

.hand {
	display: flex;
	gap: 8px;
	flex-wrap: wrap;
	min-height: 110px;
	align-items: flex-start;
}

.card {
	width: 72px;
	height: 104px;
	border-radius: 10px;
	border: 1px solid #d9d9d9;
	background: #fff;
	background-size: cover;
	background-position: center;
	position: relative;
	box-shadow: 0 6px 14px rgba(0, 0, 0, 0.25);
}

.card::after {
	content: '';
	position: absolute;
	inset: 6px;
	border: 1px solid rgba(0, 0, 0, 0.06);
	border-radius: 4px;
}

.card.red { color: #d02b2b; }
.card.back {
	background: repeating-linear-gradient(45deg, #0b2442, #0b2442 6px, #0f3a7a 6px, #0f3a7a 12px);
	color: transparent;
	border: 1px solid #1a4c94;
}

.totals {
	display: flex;
	justify-content: flex-start;
	gap: 8px;
	font-size: 13px;
	color: var(--muted);
	margin-top: 6px;
}

.log {
	background: #08121f;
	border-radius: 8px;
	padding: 10px;
	min-height: 90px;
	max-height: 120px;
	overflow-y: auto;
	border: 1px solid #123a5c;
	font-size: 14px;
	flex: 0 0 120px;
}

@media (max-height: 900px) {
	.game-table { max-height: calc(100vh - 150px); }
	.felt { min-height: 180px; padding: 10px; }
	.log { max-height: 110px; flex: 0 0 110px; }
}

@media (max-width: 1024px) {
	.layout { grid-template-columns: 280px 1fr; }
	.game-grid { grid-template-columns: 1fr; }
	.strategy-panel { margin-top: 8px; }
}

@media (max-width: 720px) {
	header { flex-direction: column; align-items: flex-start; gap: 6px; }
	header .brand { font-size: 20px; }
	header .tagline { font-size: 12px; }
	.layout { grid-template-columns: 1fr; padding: 10px; }
	.panel { padding: 12px; }
	.game-table { max-height: none; }
	.game-pane { overflow: visible; }
	.felt { min-height: 160px; padding: 10px; }
	.hand { gap: 6px; min-height: 90px; }
	.card { width: 60px; height: 88px; }
	.status-pill { font-size: 12px; padding: 6px 8px; }
	.grid-three { grid-template-columns: repeat(2, 1fr); }
	.btn-row-3 { grid-template-columns: repeat(2, 1fr); }
	.sim-grid { grid-template-columns: repeat(2, 1fr); }
	.sim-grid-wide { grid-template-columns: repeat(2, 1fr); }
	.sim-controls { grid-template-columns: 1fr; }
	.learn-grid { grid-template-columns: 1fr; }
}

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 8px 6px; text-align: left; color: var(--text); }
th { color: var(--muted); font-weight: 700; border-bottom: 1px solid #1f3653; }
tr + tr { border-top: 1px solid #0f2238; }

.chip {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	background: radial-gradient(circle at 30% 30%, #fff, #eee 35%, #ccc 60%);
	color: #111;
	border-radius: 999px;
	padding: 4px 8px;
	box-shadow: inset 0 0 0 1px #d00, 0 4px 8px rgba(0, 0, 0, 0.35);
	font-weight: 700;
	font-size: 12px;
}

.hint-box {
	background: rgba(17, 215, 255, 0.08);
	border: 1px solid rgba(17, 215, 255, 0.3);
	border-radius: 8px;
	padding: 12px;
	font-size: 14px;
	margin-top: 8px;
}

.pill {
	display: inline-block;
	padding: 4px 10px;
	border-radius: 999px;
	background: rgba(255, 255, 255, 0.08);
	border: 1px solid rgba(255, 255, 255, 0.1);
	margin-right: 6px;
	font-size: 12px;
	letter-spacing: 0.5px;
}

.grid-two { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.grid-three { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.grid-tight { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; align-items: center; }

.tabs { display: flex; gap: 6px; margin: 6px 0 8px; }
.tab-btn {
	flex: 1;
	padding: 8px 10px;
	border-radius: 8px;
	border: 1px solid #1f3653;
	background: #0c1626;
	color: var(--text);
	font-weight: 700;
	cursor: pointer;
	transition: background 120ms ease, border-color 120ms ease;
}
.tab-btn.active { background: #0f2942; border-color: #0af; color: #bfe8ff; }
.strategy-table { width: 100%; border-collapse: collapse; table-layout: fixed; font-size: 12px; }
.strategy-table th, .strategy-table td { padding: 6px 4px; text-align: center; border: 1px solid #123a5c; }
.strategy-table th { background: #0f1c2d; color: #9dc7f3; font-size: 12px; }
.strategy-table td { background: rgba(8, 18, 31, 0.65); font-size: 13px; }
.strategy-table tr:nth-child(even) td { background: rgba(10, 26, 45, 0.65); }
.strategy-note { font-size: 12px; color: var(--muted); margin-top: 4px; }

.tutorial-banner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	background: linear-gradient(90deg, rgba(255, 123, 17, 0.2), rgba(17, 215, 255, 0.12));
	border: 1px solid rgba(255, 123, 17, 0.55);
	border-radius: 10px;
	padding: 10px 12px;
	font-size: 14px;
	box-shadow: inset 0 0 0 1px rgba(255, 123, 17, 0.2);
}

.tutorial-banner button {
	background: linear-gradient(180deg, #15e0ff, #0a7fe0);
}

.left-toggle {
	display: none;
}

.left-toggle-btn {
	display: none;
	align-items: center;
	justify-content: center;
	width: 100%;
	margin-bottom: 10px;
}

.left-panel-content {
	display: block;
}

.tutorial-overlay {
	position: fixed;
	inset: 0;
	background: rgba(1, 9, 20, 0.8);
	backdrop-filter: blur(2px);
	z-index: 999;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 16px;
}

.tutorial-card {
	background: #0c1626;
	border: 1px solid #1f3653;
	border-radius: 12px;
	padding: 16px;
	width: min(420px, 100%);
	box-shadow: var(--shadow);
}

.tutorial-header {
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 12px;
}

.tutorial-step {
	font-size: 12px;
	color: var(--muted);
}

.tutorial-text {
	margin: 10px 0 14px;
	font-size: 15px;
}

.tutorial-actions {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 8px;
}

@media (max-width: 980px) {
	.layout { grid-template-columns: 1fr; }
	.game-grid { grid-template-columns: 1fr; }
	header .tagline { font-size: 12px; text-align: left; max-width: none; }
	.sim-dev-row { grid-template-columns: 1fr auto; }
	.learn-grid { grid-template-columns: 1fr; }
	.drill-options { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
	.sim-dev-row { grid-template-columns: 1fr; gap: 4px; }
	.sim-dev-row input[type="checkbox"] { justify-self: start; }
	.tutorial-banner { flex-direction: column; align-items: flex-start; }
	.left-toggle-btn { display: inline-flex; }
	.left-panel-content { display: none; }
	.left-toggle:checked + .left-toggle-btn + .left-panel-content { display: block; }
}

@media (min-width: 1025px) {
	.layout { min-height: calc(100vh - 88px); }
	.game-table { height: 100%; }
}