* {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

body {
	font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
		Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
	padding: 10px;
	background: oklch(93% 0.034 272.788);
	overflow-x: hidden; /* Prevent horizontal scroll on mobile */
}

.container {
	display: flex;
	flex-direction: column;
	width: 100%;
	max-width: 100vw; /* Ensure container doesn't exceed viewport */
	gap: 2rem;
}

#openModal svg {
	height: 35px;
}

header {
	text-align: center;
	background: linear-gradient(
		135deg,
		rgba(255, 255, 255, 0.7),
		rgba(240, 245, 255, 0.8)
	);
	backdrop-filter: blur(24px);
	border: 1px solid rgba(255, 255, 255, 0.3);
	border-radius: 1.5rem;
	padding: 1rem;
	box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
	width: 90%;
	margin-inline: auto;
}

.title {
	font-size: 2.5rem;
	font-weight: bold;
	color: oklch(21% 0.034 264.665);
	margin-bottom: 1rem;
	letter-spacing: -0.02em;
}

.title-description {
	font-size: 1rem;
	color: oklch(44.6% 0.03 256.802);
	line-height: 1.6;
	max-width: 600px;
	margin: 0 auto;
}

.controls-body {
	display: flex;
	justify-content: space-between;
}

.playback-controls {
	display: flex;
	flex-direction: column;
}

.top-controls {
	background-color: oklch(100% 0 0);
	color: oklch(14.5% 0 0);
	display: flex;
	flex-direction: column;
	gap: 0.75rem;
	border-radius: 0.8rem;
	padding: 1rem;
	width: 75%;
	margin-inline: auto;
}

.controls-body-common {
	display: flex;
	flex-direction: column;
	gap: 0.5rem;
	width: 25%;
	padding-inline: 1.5rem;
	padding-block: 1rem;
}

.seek-controls {
	display: flex;
	gap: 0.5rem;
	align-items: center;
}

.seek-control-children {
	border: 1px solid #ccc;
	display: flex;
	justify-content: center;
	align-items: center;
	height: 40px;
	width: 50px;
	border-radius: 0.7rem;
	cursor: pointer;
}

.seek-control-children svg {
	width: 20px;
	height: 20px;
}

.label {
	font-weight: bold;
	font-size: 1.5rem;
	padding-inline: 1.5rem;
	padding-block: 1rem;
}

.control-labels {
	padding-inline: 0.2rem;
	font-size: 1rem;
	font-weight: 500;
	color: oklch(37.3% 0.034 259.733);
}

#algorithm {
	position: relative;
	background: transparent;
	line-height: 1.25rem;
	outline: none;
	cursor: pointer;
	gap: 0.5rem;
	white-space: nowrap;
	user-select: none;
	width: 75%;
	background-color: #ffffff;
	border: 2px solid #e5e7eb;
	text-align: left;
	font-weight: 500;
	color: #1f2937;
	display: flex;
	align-items: center;
	justify-content: space-between;
	box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
	transition: all 200ms;
}

#algorithm:hover {
	border-color: #6366f1;
}

.selector {
	width: 100%;
	display: flex;
	align-items: center;
	justify-content: space-between;
}

.algo-options {
	top: 110%;
	display: flex;
	flex-direction: column;
	gap: 0.5rem;
	max-height: 0;
	opacity: 0;
	list-style: none;
	transition: all 0.2s ease;
	position: absolute;
	left: 0;
	right: 0;
	margin-top: 0.5rem;
	background-color: rgba(255, 255, 255, 0.95);
	backdrop-filter: blur(24px);
	border: 2px solid #e5e7eb;
	border-radius: 0.75rem;
	box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
		0 10px 10px -5px rgba(0, 0, 0, 0.04);
	z-index: 50;
	overflow: hidden;
}

.algo-options.show {
	opacity: 1;
	max-height: 200px;
	.algo-option {
		display: flex;
	}
}

.selector svg {
	transition: transform 0.2s ease-in-out;
}

.selector svg.rotate {
	transform: rotate(180deg);
}

.algo-option {
	padding-inline: 1rem;
	gap: 1.75rem;
	justify-content: space-between;
	align-items: center;
	display: none;
	width: 100%;
	padding: 0.75rem 1rem;
	text-align: left;
	font-weight: 500;
	transition: all 200ms;
}

.algo-option:hover {
	cursor: pointer;
	background: linear-gradient(to right, #8ea1ff, #ae99ff);
	color: #ffffff;
}

canvas {
	flex-grow: 1;
	margin-left: -5px;
	border: 1px solid #e5e7eb;
	border-radius: 0.75rem;
	box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
		0 4px 6px -2px rgba(0, 0, 0, 0.05);
	cursor: pointer;
	transition: box-shadow 200ms;
	width: 100%;
	height: 600px;
	min-height: 400px;
	max-width: 100%;
}

canvas:hover {
	box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
		0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.canvas-wrapper {
	margin-top: 1rem;
	display: flex;
	font-weight: bold;
	font-size: 1.5rem;
	flex-direction: column;
	gap: 1rem;
	width: 90%;
	min-height: 700px;
	margin-inline: auto;
	background-color: rgba(255, 255, 255, 0.95);
	backdrop-filter: blur(24px);
	border: 1px solid rgba(255, 255, 255, 0.2);
	border-radius: 1.5rem;
	padding: 1rem;
	box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.canvas-wrapper h3 {
	font-size: 1.5rem;
	font-weight: 700;
	color: #1f2937;
	text-align: center;
	letter-spacing: -0.015em;
}

.canvas-wrapper p {
	text-align: center;
	color: #6b6e72;
	font-size: 0.875rem;
	line-height: 1.25rem;
}

#tooltip {
	transition: opacity 0.1s ease;
}

.card {
	background-color: #fff;
	color: #000;
	display: flex;
	flex-direction: column;
	gap: 1.5rem;
	border-radius: 1rem;
	border: 1px solid #ddd;
	padding: 1.5rem 0;
	box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
	width: 90%;
	margin: auto;
}
.card-header {
	padding: 0.6rem 1.5rem;
	padding-bottom: 2rem;
	border-bottom: 1px solid #eee;
}
.card-title {
	font-weight: 600;
	font-size: 1.7rem;
	text-align: center;
}
.card-content {
	padding: 0 1.5rem;
}
.content-block {
	margin-bottom: 2rem;
}

.content-block h3,
.content-block h4 {
	margin-bottom: 0.5rem;
	color: #111827;
}
.content-block p {
	color: #374151;
}
.pseudocode {
	font-family: monospace;
	font-size: 0.875rem;
	line-height: 1.5rem;
	background: linear-gradient(to bottom right, #f9fafb, #f3f4f6);
	border-radius: 0.75rem;
	padding: 1.5rem;
	border: 1px solid #e5e7eb;
}
.pseudocode div {
	margin-bottom: 0.25rem;
}
.pseudocode sub {
	font-size: 0.7em;
	vertical-align: sub;
	color: #4b5563;
}
.pseudocode sup {
	font-size: 0.7em;
	vertical-align: super;
	color: #4b5563;
}
.pseudocode .variable {
	color: #059669;
	font-weight: 500;
}
.pseudocode .operator {
	color: #dc2626;
	font-weight: 500;
}
.pseudocode .function {
	color: #7c3aed;
	font-weight: 500;
}
.indent {
	margin-left: 1rem;
}

.manipulate-value {
	font-size: 1rem;
	font-weight: 500;
	border: 1px solid #e5e7eb;
	background-color: #fff;
	height: 40px;
	width: 50px;
	border-radius: 6px;
	padding: 0 1rem;
	cursor: pointer;
	transition: all 0.2s ease;
}
.manipulate-value:hover {
	background-color: #f3f4f6;
	color: #1f2937;
}

.manipulate-value:active {
	background-color: rgb(63, 63, 63);
	color: #fff;
}

.manipulate-value:focus-visible {
	outline: none;
	box-shadow: 0 0 0 2px #ffffff, 0 0 0 4px #000000;
}

#prevBtn,
#nextBtn,
#resetBtn {
	transition: all 0.1s ease-in-out;
}
#prevBtn:active,
#nextBtn:active,
#resetBtn:active {
	background-color: rgb(63, 63, 63);
	color: #fff;
}

#progress-bar {
	width: 100%;
	height: 20px;
	border-radius: 50px;
	background-color: rgb(235, 235, 235);
}

#progress-fill {
	height: 100%;
	width: 0%;
	border-radius: 50px;
	transition: width 0.3s ease;
	background-color: black;
}

.floating-controls-btn {
	position: fixed;
	bottom: 30px;
	right: 30px;
	width: 60px;
	height: 60px;
	background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
	border: none;
	border-radius: 50%;
	cursor: pointer;
	box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
	z-index: 1000;
	display: flex;
	align-items: center;
	justify-content: center;
	transition: all 0.3s ease;
}

.floating-controls-btn:hover {
	transform: scale(1.1);
	box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3);
}

.floating-controls-btn svg {
	color: white;
}

.modal {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: transparent;
	z-index: 2000;
	display: flex;
	align-items: flex-end;
	justify-content: center;
	pointer-events: none;
	padding-bottom: 30px;
}

.modal-content {
	background: white;
	border-radius: 12px;
	box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
	min-width: 300px;
	min-height: 200px;
	width: 750px;
	height: 250px;
	max-width: 90vw;
	max-height: 80vh;
	overflow: hidden;
	position: relative;
	cursor: move;
	pointer-events: all;
	resize: both;
	border: 2px solid #e5e7eb;
}

.resize-handle {
	position: absolute;
	background: transparent;
	z-index: 10;
}

.resize-n {
	top: -5px;
	left: 10px;
	right: 10px;
	height: 10px;
	cursor: n-resize;
}

.resize-s {
	bottom: -5px;
	left: 10px;
	right: 10px;
	height: 10px;
	cursor: s-resize;
}

.resize-e {
	right: -5px;
	top: 10px;
	bottom: 10px;
	width: 10px;
	cursor: e-resize;
}

.resize-w {
	left: -5px;
	top: 10px;
	bottom: 10px;
	width: 10px;
	cursor: w-resize;
}

.resize-ne {
	top: -5px;
	right: -5px;
	width: 15px;
	height: 15px;
	cursor: ne-resize;
}

.resize-nw {
	top: -5px;
	left: -5px;
	width: 15px;
	height: 15px;
	cursor: nw-resize;
}

.resize-se {
	bottom: -5px;
	right: -5px;
	width: 15px;
	height: 15px;
	cursor: se-resize;
}

.resize-sw {
	bottom: -5px;
	left: -5px;
	width: 15px;
	height: 15px;
	cursor: sw-resize;
}

.modal-header {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 12px 16px 0 16px;
	border-bottom: 1px solid #e5e7eb;
	padding-bottom: 10px;
	cursor: move;
}

.modal-title {
	font-size: 1.5rem;
	font-weight: bold;
	color: #1f2937;
}

.close-btn {
	background: none;
	border: none;
	cursor: pointer;
	padding: 4px;
	border-radius: 4px;
	transition: background-color 0.2s;
}

.close-btn svg {
	width: 16px;
	height: 16px;
}

.close-btn:hover {
	background-color: #f3f4f6;
}

.modal-body {
	padding: 16px;
	height: calc(100% - 60px);
	overflow: auto;
	display: flex;
	flex-direction: column;
}

.modal .controls-body {
	display: flex;
	flex-direction: row;
	gap: 0.75rem;
	flex-wrap: wrap;
	flex: 1;
	align-items: flex-start;
}

.modal .controls-body-common {
	display: flex;
	flex-direction: column;
	gap: 0.4rem;
	padding: 0;
	flex: 1;
	min-width: 140px;
}

.modal .step-counter {
	margin-top: 0.75rem;
	padding: 0;
	border-top: 1px solid #e5e7eb;
	padding-top: 0.75rem;
	width: 100%;
}

.modal .modal-title {
	font-size: 1.1rem;
}

.modal .control-labels {
	font-size: 0.8rem;
}

.modal .current-algo {
	font-size: 0.8rem;
}

.modal .algo-option span {
	font-size: 0.8rem;
}

.modal .manipulate-value {
	font-size: 0.8rem;
	height: 32px;
	width: 40px;
}

.modal .seek-control-children {
	height: 32px;
	width: 40px;
}

.modal .seek-control-children svg {
	width: 16px;
	height: 16px;
}

.modal .step-counter label {
	font-size: 0.8rem;
}

.modal #speedRange,
.modal #cellSize,
.modal #current-step,
.modal #final-step {
	font-size: 0.8rem;
}

.modal #algorithm {
	padding: 0.4rem 0.6rem;
	font-size: 0.8rem;
	border-radius: 0.5rem;
}

.modal .algo-options {
	gap: 0.2rem;
	max-height: 150px;
	margin-top: 0.25rem;
	border-radius: 0.5rem;
}

.modal .algo-options.show {
	max-height: 150px;
}

.modal .algo-option {
	padding: 0.4rem 0.6rem;
	font-size: 0.75rem;
}

.modal #progress-bar {
	height: 16px;
}

.modal .speed-control,
.modal .controls-body-common > div:last-child {
	margin-top: 0.2rem;
}

@media (max-width: 768px) {
	header {
		width: 95%;
		padding: 1.5rem;
		margin-bottom: 1.5rem;
	}

	.title {
		font-size: 2.25rem;
		margin-bottom: 0.75rem;
	}

	.title-description {
		font-size: 1rem;
	}

	.canvas-wrapper {
		width: 95%;
		min-height: 400px;
		padding: 0.75rem;
	}

	.canvas-wrapper h3 {
		font-size: 1.25rem;
	}

	.canvas-wrapper p {
		font-size: 0.875rem;
	}

	canvas {
		min-height: 300px;
		margin-left: 0;
	}

	.modal-content {
		min-width: 280px;
		min-height: 180px;
		width: 90vw !important;
		height: auto !important;
		max-width: 420px;
		max-height: 70vh;
		position: fixed !important;
		left: 50% !important;
		top: 50% !important;
		transform: translate(-50%, -50%) !important;
	}

	.modal .controls-body {
		flex-direction: column;
	}

	.modal .controls-body-common {
		min-width: auto;
	}

	.resize-handle {
		display: none;
	}

	.floating-controls-btn {
		width: 50px !important;
		height: 50px !important;
		/* Make it touch-friendly */
		padding: 12px !important;
	}

	.notification {
		right: 80px !important;
		width: 250px !important;
		font-size: 0.875rem !important;
	}

	/* Touch-friendly button sizing */
	button {
		min-height: 44px;
		min-width: 44px;
		padding: 8px 16px;
	}

	/* Improve text readability on small screens */
	.modal-content h3 {
		font-size: 1.125rem;
	}

	.modal-content p {
		font-size: 0.875rem;
		line-height: 1.5;
	}

	/* Ensure canvas is properly contained */
	canvas {
		touch-action: manipulation; /* Optimize touch interactions */
	}
}

/* Tablet styles */
@media (min-width: 769px) and (max-width: 1024px) {
	.canvas-wrapper {
		width: 92%;
		min-height: 550px;
	}

	canvas {
		min-height: 450px;
	}

	.title {
		font-size: 2.75rem;
	}

	.modal-content {
		max-width: 600px;
		width: 85vw;
	}
}

/* Small mobile devices */
@media (max-width: 480px) {
	body {
		padding: 5px;
	}

	.canvas-wrapper {
		width: 98%;
		padding: 0.5rem;
		min-height: 350px;
	}

	.canvas-wrapper h3 {
		font-size: 1.125rem;
	}

	canvas {
		min-height: 250px;
	}

	.title {
		font-size: 1.875rem !important;
	}

	.title-description {
		font-size: 0.875rem !important;
	}

	.notification {
		width: 220px !important;
		right: 70px !important;
		font-size: 0.8rem !important;
	}

	.floating-controls-btn {
		width: 45px !important;
		height: 45px !important;
	}
}

/* Large desktop styles */
@media (min-width: 1400px) {
	.canvas-wrapper {
		width: 90%;
		min-height: 800px;
	}

	canvas {
		min-height: 600px;
	}

	.title {
		font-size: 3.5rem;
	}

	.title-description {
		font-size: 1.375rem;
	}
}

.controls-body {
	display: flex;
	justify-content: space-between;
}

.controls-body-common {
	display: flex;
	flex-direction: column;
	gap: 0.5rem;
	width: 25%;
	padding-inline: 1.5rem;
	padding-block: 1rem;
}

.seek-controls {
	display: flex;
	gap: 0.5rem;
	align-items: center;
}

.seek-control-children {
	border: 1px solid #ccc;
	display: flex;
	justify-content: center;
	align-items: center;
	height: 40px;
	width: 50px;
	border-radius: 0.7rem;
	cursor: pointer;
}

.seek-control-children svg {
	width: 20px;
	height: 20px;
}

.control-labels {
	padding-inline: 0.2rem;
	font-size: 1rem;
	font-weight: 500;
	color: oklch(37.3% 0.034 259.733);
}

.step-counter {
	padding-inline: 1.5rem;
	padding-block: 1rem;
	display: flex;
	flex-direction: column;
	gap: 0.8rem;
	color: oklch(37.3% 0.034 259.733);
	font-weight: 500;
}

/* Curved Arrow Notification styles */
#controlsNotification {
	position: fixed;
	bottom: 80px;
	right: 60px;
	z-index: 1500;
	display: none;
	opacity: 0;
	transform: translateY(20px);
	transition: all 0.4s ease;
	pointer-events: none;
}

#controlsNotification.show {
	opacity: 1;
	transform: translateY(0);
}

.curved-arrow-notification {
	position: relative;
	display: flex;
	flex-direction: column;
	align-items: flex-end;
}

.notification-text {
	background: linear-gradient(
		135deg,
		rgba(255, 255, 255, 0.95),
		rgba(240, 245, 255, 0.95)
	);
	backdrop-filter: blur(12px);
	border: 1px solid rgba(255, 255, 255, 0.3);
	border-radius: 12px;
	padding: 12px 16px;
	box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
	font-size: 0.9rem;
	color: #374151;
	font-weight: 500;
	white-space: nowrap;
	margin-bottom: -10px;
	z-index: 2;
	position: relative;
}

.curved-arrow {
	filter: drop-shadow(0 2px 4px rgba(99, 102, 241, 0.3));
}

.curved-arrow path {
	stroke-dasharray: 120;
	stroke-dashoffset: 120;
	animation: drawArrow 0.8s ease-out forwards,
		arrowPulse 2s ease-in-out infinite 0.8s;
}

@keyframes drawArrow {
	to {
		stroke-dashoffset: 0;
	}
}

@keyframes arrowPulse {
	0%,
	100% {
		opacity: 1;
		transform: scale(1);
	}
	50% {
		opacity: 0.7;
		transform: scale(0.95);
	}
}

/* Footer styles */
footer {
	background: linear-gradient(
		135deg,
		rgba(255, 255, 255, 0.7),
		rgba(240, 245, 255, 0.8)
	);
	backdrop-filter: blur(24px);
	border: 1px solid rgba(255, 255, 255, 0.3);
	border-radius: 1.5rem;
	padding: 1rem 2rem;
	box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
	width: 90%;
	margin-inline: auto;
	margin-bottom: 2rem;
}

.footer-bottom {
	display: flex;
	justify-content: space-between;
	align-items: center;
	flex-wrap: wrap;
	gap: 1rem;
}

.footer-bottom p {
	color: oklch(37.3% 0.034 259.733);
	font-size: 0.85rem;
	margin: 0;
}

.footer-links a {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	color: oklch(52.3% 0.126 264.665);
	text-decoration: none;
	font-size: 0.9rem;
	font-weight: 500;
	transition: all 0.3s ease;
	padding: 0.5rem 1rem;
	border-radius: 0.5rem;
	background: rgba(255, 255, 255, 0.5);
	border: 1px solid rgba(255, 255, 255, 0.3);
}

.footer-links a:hover {
	color: oklch(21% 0.034 264.665);
	background: rgba(255, 255, 255, 0.8);
	transform: translateY(-1px);
	box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
	.footer-bottom {
		flex-direction: column;
		text-align: center;
	}
}