/* Simple dark theme foundation */
html,
body {
	margin: 0;
	padding: 0;
	min-height: 100%;
}

body {
	background-color: #121212;
	color: #e6e6e6;
	font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
	line-height: 1.5;
	display: flex;
	justify-content: center;
}

a {
	color: #7ab4ff;
}

a:hover {
	color: #a9ceff;
}

.app {
	width: min(820px, 92vw);
	padding: 24px 0 28px;
}

h1 {
	margin: 0;
	font-size: clamp(1.8rem, 4vw, 2.4rem);
	letter-spacing: 0.02em;
}

.subtitle {
	margin: 8px 0 18px;
	color: #b9c0ce;
}

.controls {
	display: grid;
	grid-template-columns: 1fr;
	gap: 8px;
	background: #1a1a1a;
	border: 1px solid #2a2a2a;
	border-radius: 10px;
	padding: 14px;
}

.controls label {
	font-size: 0.95rem;
	color: #cfd5e0;
}

.controls input {
	background: #0f0f0f;
	border: 1px solid #343434;
	border-radius: 8px;
	padding: 10px 12px;
	color: #f2f5fa;
	font-size: 1rem;
	outline: none;
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.controls input::placeholder {
	color: #7f8796;
}

.controls input:focus {
	border-color: #6ca9ff;
	box-shadow: 0 0 0 2px #1c3557;
}

.length-row {
	display: grid;
	grid-template-columns: 1fr;
	gap: 8px;
	margin-top: 4px;
	padding-top: 8px;
	border-top: 1px solid #2a2a2a;
}

.length-toggle {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	font-size: 0.95rem;
	color: #cfd5e0;
}

.length-toggle input {
	width: 16px;
	height: 16px;
	accent-color: #6ca9ff;
	padding: 0;
	margin: 0;
	box-shadow: none;
}

.usage-mode {
	margin: 4px 0 0;
	padding: 10px 12px 12px;
	border: 1px solid #2a2a2a;
	border-radius: 8px;
}

.usage-mode legend {
	padding: 0 6px;
	color: #cfd5e0;
	font-size: 0.95rem;
}

.usage-option {
	display: flex;
	align-items: center;
	gap: 8px;
	margin-top: 8px;
	color: #cfd5e0;
	font-size: 0.95rem;
}

.usage-option input {
	width: 16px;
	height: 16px;
	accent-color: #6ca9ff;
	padding: 0;
	margin: 0;
	box-shadow: none;
}

.status {
	margin: 14px 0 10px;
	color: #bfc6d3;
	min-height: 1.4em;
}

.results-panel {
	background: #181818;
	border: 1px solid #2c2c2c;
	border-radius: 10px;
	height: min(58vh, 460px);
	overflow: auto;
}

.results-list {
	margin: 0;
	padding: 0;
	list-style: none;
}

.results-list li {
	padding: 8px 12px;
	border-bottom: 1px solid #252525;
	font-family: Consolas, "Courier New", monospace;
	letter-spacing: 0.02em;
}

.results-list li:last-child {
	border-bottom: none;
}

@media (max-width: 560px) {
	.app {
		width: 94vw;
		padding-top: 18px;
	}

	.results-panel {
		height: min(54vh, 420px);
	}
}