:root {
	--black: #000000;
	--dark: #1c1c1c;
	--card: #111111;
	--border: #1f1f1f;

	--lime: #a3e635;
	--lime-dark: #84cc16;
	--lime-darker: #65a30d;

	--gradient-lime: linear-gradient(
		135deg,
		#a3e635 0%,
		#84cc16 50%,
		#65a30d 100%
	);

	--text-primary: #f5f5f5;
	--text-muted: #9ca3af;
}

* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
	font-family: 'Inter', 'Segoe UI', sans-serif;
}

body {
	background: var(--black);
	color: var(--text-primary);
	padding: 50px 20px;
	min-height: 100vh;
}

header {
	text-align: center;
	margin-bottom: 50px;
}

header h1 {
	font-size: 34px;
	font-weight: 700;
	letter-spacing: -0.5px;
	background: var(--gradient-lime);
	background-clip: text;
	-webkit-text-fill-color: transparent;
}

main {
	max-width: 1100px;
	margin: auto;
}

section {
	margin-bottom: 60px;
}

section h2 {
	font-size: 20px;
	margin-bottom: 20px;
	font-weight: 600;
	padding-left: 12px;
	border-left: 4px solid var(--lime);
}

form {
	background: var(--card);
	padding: 28px;
	border-radius: 16px;
	border: 1px solid var(--border);
	box-shadow: 0 10px 40px rgba(163, 230, 53, 0.04);
}

form div {
	margin-bottom: 18px;
}

label {
	display: block;
	font-size: 13px;
	margin-bottom: 6px;
	color: var(--text-muted);
}

input[type='text'],
input[type='number'] {
	width: 100%;
	padding: 12px 14px;
	border-radius: 10px;
	border: 1px solid #1a1a1a;
	background: var(--dark);
	color: white;
	font-size: 14px;
	transition: 0.3s ease;
}

input:focus {
	outline: none;
	border: 1px solid var(--lime);
	box-shadow: 0 0 0 3px rgba(163, 230, 53, 0.15);
}

input[type='checkbox'] {
	accent-color: var(--lime);
	transform: scale(1.1);
	cursor: pointer;
}

button {
	padding: 12px 18px;
	border-radius: 10px;
	border: none;
	font-size: 14px;
	font-weight: 600;
	cursor: pointer;
	transition: all 0.25s ease;
}

#searchBookTitle {
	margin-bottom: 14px;
}

#bookFormSubmit,
#searchSubmit {
	background: var(--gradient-lime);
	color: #000;
	width: 100%;
}

#bookFormSubmit:hover,
#searchSubmit:hover {
	transform: translateY(-2px);
	box-shadow: 0 10px 25px rgba(163, 230, 53, 0.3);
}

#incompleteBookList,
#completeBookList {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
	gap: 20px;
}

[data-testid='bookItem'] {
	background: var(--card);
	padding: 20px;
	border-radius: 16px;
	border: 1px solid var(--border);
	transition: 0.3s ease;
}

[data-testid='bookItem']:hover {
	border: 1px solid var(--lime);
	transform: translateY(-6px);
	box-shadow: 0 15px 35px rgba(163, 230, 53, 0.15);
}

[data-testid='bookItemTitle'] {
	font-size: 17px;
	font-weight: 600;
	margin-bottom: 6px;
}

[data-testid='bookItemAuthor'],
[data-testid='bookItemYear'] {
	font-size: 13px;
	color: var(--text-muted);
	margin-bottom: 4px;
}

[data-testid='bookItem'] > div {
	margin-top: 14px;
	display: flex;
	gap: 8px;
	flex-wrap: wrap;
}

[data-testid='bookItem'] button {
	flex: 1;
	background: transparent;
	border: 1px solid var(--lime);
	color: var(--lime);
}

[data-testid='bookItem'] button:hover {
	background: var(--lime);
	color: #000;
}

.modal {
	position: fixed;
	inset: 0;
	background: rgba(0, 0, 0, 0.7);
	display: none;
	align-items: center;
	justify-content: center;
	backdrop-filter: blur(4px);
	z-index: 999;
}

.modal-content {
	background: #111;
	padding: 30px;
	border-radius: 16px;
	width: 100%;
	max-width: 450px;
	border: 1px solid rgba(163, 230, 53, 0.2);
	box-shadow: 0 20px 50px rgba(163, 230, 53, 0.15);
}

.modal-actions {
	margin-top: 20px;
	display: flex;
	gap: 10px;
}

.modal-actions button {
	flex: 1;
	background: linear-gradient(135deg, #a3e635, #65a30d);
	color: #000;
}

#closeModal {
	background: transparent;
	border: 1px solid #a3e635;
	color: #a3e635;
}

@media (max-width: 768px) {
	body {
		padding: 30px 16px;
	}

	header h1 {
		font-size: 26px;
	}

	form {
		padding: 20px;
	}
}