:root {
	--bg: #f5fbff;
	--primary: #0f394c;
	--accent: #49b5e7;
	--white: #fff;
	--secondary: #0f394c;
	--error-bg: #fef2f2;
	--error-text: #ef4444;
	--error-border: #fee2e2;
}

.selection-accent ::selection {
	background-color: rgba(73, 181, 231, 0.3);
}

.app-container {
	min-height: 100vh;
}

.main-content {
	max-width: 56rem;
	/* 4xl */
	margin: 0 auto;
}

.stack-y-large>*+* {
	margin-top: 1.5rem;
}

@media (min-width: 640px) {
	.stack-y-large>*+* {
		margin-top: 2rem;
	}
}

/* Card Styles */
.card {
	background-color: var(--white);
	border-radius: 2rem;
	padding: 1.25rem;
	box-shadow: 0 20px 25px -5px rgba(15, 57, 76, 0.05), 0 10px 10px -5px rgba(15, 57, 76, 0.02);
	border: 1px solid rgba(15, 57, 76, 0.05);
}

@media (min-width: 640px) {
	.card {
		border-radius: 2.5rem;
		padding: 2rem;
	}
}

.card-header {
	display: flex;
	flex-direction: column;
	justify-content: space-between;
	margin-bottom: 1.5rem;
	gap: 1rem;
	background: none;
	border: none;
	padding: 0;
	align-items: center;
}

@media (min-width: 640px) {
	.card-header {
		flex-direction: row;
		align-items: center;
		margin-bottom: 2rem;
		gap: 1.5rem;
	}

	.mode-toggle-group {
		margin: initial !important;
	}
}

.header-title {
	display: flex;
	align-items: center;
	gap: 0.75rem;
}

.icon-accent-box {
	width: 2.5rem;
	height: 2.5rem;
	border-radius: 0.75rem;
	background-color: var(--accent);
	display: flex;
	align-items: center;
	justify-content: center;
	box-shadow: 0 4px 6px -1px rgba(73, 181, 231, 0.2);
	flex-shrink: 0;
}

.icon-white {
	color: white;
	width: 1.25rem;
	height: 1.25rem;
}

.title-text {
	font-size: 1.25rem;
	font-weight: 700;
	letter-spacing: -0.025em;
	margin: 0;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

@media (min-width: 640px) {
	.title-text {
		font-size: 1.5rem;
	}
}

.mode-toggle-group {
	display: inline-flex;
	align-items: center;
	gap: 0.25rem;
	background-color: #f5fbff;
	padding: 0.25rem;
	border-radius: 0.75rem;
	border: 1px solid rgba(15, 57, 76, 0.05);
	align-self: flex-start;
	margin: auto;
}

@media (min-width: 640px) {
	.mode-toggle-group {
		align-self: auto;
	}
}

.mode-btn {
	border: none;
	background: transparent;
	padding: 0.5rem 1rem;
	border-radius: 0.5rem;
	font-size: 0.625rem;
	/* 10px */
	font-weight: 700;
	transition: all 0.2s ease;
	cursor: pointer;
	color: var(--primary);
	opacity: 0.4;
}

@media (min-width: 640px) {
	.mode-btn {
		font-size: 0.75rem;
		padding: 0.5rem 1.5rem;
	}
}

.mode-btn.active {
	background-color: var(--accent);
	color: white;
	opacity: 1;
	box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.mode-btn:hover:not(.active) {
	opacity: 1;
}

/* Meta Headers */
.input-meta-header,
.output-meta-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	margin-bottom: 0.75rem;
}

@media (min-width: 640px) {
	.input-meta-header {
		margin-bottom: 1rem;
	}
}

.meta-label {
	display: flex;
	align-items: center;
	gap: 0.5rem;
}

.dot {
	width: 0.375rem;
	height: 0.375rem;
	border-radius: 50%;
	background-color: var(--accent);
}

@media (min-width: 640px) {
	.dot {
		width: 0.5rem;
		height: 0.5rem;
	}
}

.meta-text {
	font-size: 0.5625rem;
	/* 9px */
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.1em;
	opacity: 0.4;
}

@media (min-width: 640px) {
	.meta-text {
		font-size: 0.625rem;
	}
}

.meta-actions,
.meta-actions-bottom {
	display: flex;
	align-items: center;
	gap: 0.75rem;
}

@media (min-width: 640px) {

	.meta-actions,
	.meta-actions-bottom {
		gap: 1rem;
	}
}

.level-toggle-group {
	display: flex;
	align-items: center;
	gap: 0.125rem;
	background-color: #f5fbff;
	padding: 0.125rem;
	border-radius: 0.5rem;
	border: 1px solid rgba(15, 57, 76, 0.05);
}

@media (min-width: 640px) {
	.level-toggle-group {
		padding: 0.25rem;
	}
}

.level-btn {
	border: none;
	background: transparent;
	padding: 0.25rem 0.5rem;
	border-radius: 0.375rem;
	font-size: 0.5rem;
	/* 8px */
	font-weight: 900;
	text-transform: uppercase;
	letter-spacing: -0.05em;
	transition: all 0.2s ease;
	cursor: pointer;
	color: var(--primary);
	opacity: 0.3;
}

@media (min-width: 640px) {
	.level-btn {
		font-size: 0.5625rem;
		padding: 0.25rem 0.75rem;
	}
}

.level-btn.active {
	background-color: var(--primary);
	color: white;
	opacity: 1;
	box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.level-btn:hover:not(.active) {
	opacity: 1;
}

.icon-btn-danger {
	border: none;
	background: transparent;
	border-radius: 0.5rem;
	color: #f87171;
	cursor: pointer;
	transition: all 0.2s ease;
	height: 30px;
	width: 30px;
}

.icon-btn-danger:hover {
	background-color: #fef2f2;
}

.icon-btn-danger:hover i {
	transform: scale(1.1);
}

/* Textarea */
.input-field {
	width: 100%;
	height: 10rem;
	background-color: #f5fbff;
	border-radius: 1rem;
	padding: 1rem;
	font-size: 1rem;
	border: none;
	outline: none;
	resize: none;
	transition: all 0.2s ease;
	color: color-mix(in oklab, var(--primary) 90%, transparent);
}

.input-field::placeholder {
	color: color-mix(in oklab, var(--primary) 40%, transparent);
	font-weight: 500;
}

#output-area {
	color: color-mix(in oklab, var(--primary) 90%, transparent);
}

@media (min-width: 640px) {
	.input-field {
		height: 12rem;
		border-radius: 1.5rem;
		padding: 1.5rem;
		font-size: 1.125rem;
	}
}

.input-field::placeholder {
	opacity: 0.3;
}

.input-field:focus {
	box-shadow: 0 0 0 2px var(--accent);
}

/* Swap Section */
.swap-divider-container {
	display: flex;
	align-items: center;
	justify-content: center;
	margin: 1.5rem 0;
	position: relative;
}

@media (min-width: 640px) {
	.swap-divider-container {
		margin: 2rem 0;
	}
}

.divider-line {
	position: absolute;
	width: 100%;
	border-top: 1px solid rgba(15, 57, 76, 0.05);
}

.swap-btn {
	position: relative;
	z-index: 10;
	width: 3rem;
	height: 3rem;
	border-radius: 50%;
	background-color: var(--white);
	border: 1px solid rgba(73, 181, 231, 0.1);
	display: flex;
	align-items: center;
	justify-content: center;
	box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
	cursor: pointer;
	transition: all 0.3s ease;
}

@media (min-width: 640px) {
	.swap-btn {
		width: 3.5rem;
		height: 3.5rem;
	}
}

.swap-btn:hover {
	transform: scale(1.1);
}

.swap-btn:active {
	transform: scale(0.95);
}

.swap-btn:hover i {
	transform: rotate(180deg);
}

.icon-accent {
	color: var(--accent);
}

.icon-md {
	width: 1.25rem;
	height: 1.25rem;
}

@media (min-width: 640px) {
	.icon-md {
		width: 1.5rem;
		height: 1.5rem;
	}
}

/* Output Section */
.output-meta-header {
	margin-bottom: 1rem;
	flex-direction: column;
	align-items: flex-start;
	gap: 0.75rem;
}

@media (min-width: 640px) {
	.output-meta-header {
		flex-direction: row;
		align-items: center;
		margin-bottom: 1.5rem;
		gap: 0;
	}
}

.meta-actions-bottom {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.5rem;
}

@media (min-width: 640px) {
	.meta-actions-bottom {
		gap: 0.75rem;
	}
}

.copy-btn {
	display: flex;
	align-items: center;
	gap: 0.375rem;
	padding: 0.375rem 0.625rem;
	background-color: #f5fbff;
	border-radius: 0.5rem;
	border: 1px solid rgba(15, 57, 76, 0.05);
	cursor: pointer;
	transition: all 0.2s ease;
	color: var(--primary);
}

@media (min-width: 640px) {
	.copy-btn {
		gap: 0.5rem;
		padding: 0.375rem 0.75rem;
		border-radius: 0.75rem;
	}
}

.copy-btn:hover {
	background-color: rgba(73, 181, 231, 0.1);
}

.copy-btn-text {
	font-size: 0.5625rem;
	/* 9px */
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.05em;
}

@media (min-width: 640px) {
	.copy-btn-text {
		font-size: 0.625rem;
	}
}

.copy-icon-default {
	opacity: 0.4;
	transition: opacity 0.2s;
}

.copy-btn:hover .copy-icon-default {
	opacity: 1;
}

.auto-convert-group {
	display: flex;
	align-items: center;
	gap: 0.5rem;
}

@media (min-width: 640px) {
	.auto-convert-group {
		gap: 0.75rem;
	}
}

.toggle-label {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	cursor: pointer;
}

.toggle-label .meta-text {
	opacity: 0.4;
	transition: opacity 0.2s;
	white-space: nowrap;
}

.toggle-label:hover .meta-text {
	opacity: 1;
}

.switch-bg {
	width: 2rem;
	height: 1rem;
	border-radius: 9999px;
	position: relative;
	transition: background-color 0.2s;
	background-color: #e2e8f0;
}

@media (min-width: 640px) {
	.switch-bg {
		width: 2.5rem;
		height: 1.25rem;
	}
}

.switch-bg.active {
	background-color: var(--accent);
}

.switch-handle {
	position: absolute;
	top: 0.125rem;
	left: 0.125rem;
	width: 0.75rem;
	height: 0.75rem;
	background-color: white;
	border-radius: 50%;
	transition: all 0.2s;
}

@media (min-width: 640px) {
	.switch-handle {
		top: 0.25rem;
		left: 0.25rem;
	}
}

.switch-bg.active .switch-handle {
	left: 1.125rem;
}

@media (min-width: 640px) {
	.switch-bg.active .switch-handle {
		left: 1.5rem;
	}
}

.convert-btn {
	padding: 0.25rem 0.75rem;
	background-color: var(--accent);
	color: white;
	border: none;
	border-radius: 0.5rem;
	font-size: 0.5625rem;
	/* 9px */
	font-weight: 700;
	cursor: pointer;
	box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

@media (min-width: 640px) {
	.convert-btn {
		padding: 0.375rem 1rem;
		font-size: 0.75rem;
	}
}

.output-display {
	width: 100%;
	min-height: 8rem;
	background-color: #f5fbff;
	border-radius: 1rem;
	padding: 1rem;
	font-size: 1rem;
	word-break: break-all;
	transition: all 0.2s;
}

@media (min-width: 640px) {
	.output-display {
		min-height: 12rem;
		border-radius: 1.5rem;
		padding: 1.5rem;
		font-size: 1.125rem;
	}
}

.output-display.error-state {
	background-color: var(--error-bg);
	color: var(--error-text);
	border: 1px solid var(--error-border);
}

.placeholder-text {
	opacity: 0.2;
	font-style: italic;
}

/* Features Grid */
.features-grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: 1rem;
}

@media (min-width: 640px) {
	.features-grid {
		grid-template-columns: repeat(3, 1fr);
		gap: 1.5rem;
	}
}

.feature-item {
	background-color: #fff;
	backdrop-filter: blur(8px);
	padding: 1rem;
	border-radius: 1.5rem;
	border: 1px solid rgba(255, 255, 255, 0.6);
	display: flex;
	align-items: flex-start;
	gap: 0.75rem;
}

.feature-item p {
	margin: 0;
}

@media (min-width: 640px) {
	.feature-item {
		padding: 1.5rem;
		border-radius: 2rem;
		gap: 1rem;
	}
}

.feature-icon-box {
	width: 2rem;
	height: 2rem;
	border-radius: 0.75rem;
	background-color: rgba(73, 181, 231, 0.15);
	display: flex;
	align-items: center;
	justify-content: center;
	flex-shrink: 0;
}

@media (min-width: 640px) {
	.feature-icon-box {
		width: 2.5rem;
		height: 2.5rem;
	}
}

.feature-title {
	font-size: 20px;
	font-weight: 700;
	margin-bottom: 0.25rem;
}

.feature-desc {
	font-size: 0.800rem;
	/* 10px */
	opacity: 0.5;
	font-weight: 500;
	line-height: 1.5;
}

@media (min-width: 640px) {
	.feature-desc {
		font-size: 0.75rem;
	}
}

/* Animations */
.initial-hide {
	opacity: 0;
	transform: translateY(20px);
	transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.initial-show {
	opacity: 1;
	transform: translateY(0);
}

.delay-1 {
	transition-delay: 0.1s;
}

.delay-2 {
	transition-delay: 0.2s;
}

.delay-3 {
	transition-delay: 0.3s;
}

.hidden {
	display: none !important;
}

.icon-sm {
	width: 1rem;
	height: 1rem;
}

.icon-xs {
	width: 0.875rem;
	height: 0.875rem;
}

.text-success {
	color: #22c55e !important;
}