.kod-wrap {
	margin: 20px auto;
	padding: 0 12px;
	color: #1f2937;
	width: 100%;
	max-width: 100%;
	box-sizing: border-box;
	position: relative;
	overflow-x: hidden;
}

.kod-status-msg {
	position: fixed;
	bottom: 20px;
	left: 50%;
	transform: translateX(-50%);
	background: #dc2626;
	color: #fff;
	padding: 10px 20px;
	border-radius: 8px;
	font-size: 14px;
	z-index: 9999;
	box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.kod-head {
	margin-bottom: 16px;
}

.kod-head h1 {
	margin: 0 0 6px;
	font-size: 28px;
}

.kod-auth-prompt {
	margin-top: 8px;
	font-size: 14px;
}

.kod-auth-prompt a {
	color: #2563eb;
	text-decoration: none;
}

.kod-auth-prompt a:hover {
	text-decoration: underline;
}

.kod-subjects {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin-bottom: 16px;
}

.kod-subject-btn {
	background: #fff;
	border: 1px solid #d1d5db;
	border-radius: 8px;
	padding: 8px 16px;
	font-size: 14px;
	font-weight: 500;
	color: #4b5563;
	cursor: pointer;
	transition: all 0.2s;
}

.kod-subject-btn:hover {
	background: #f3f4f6;
	border-color: #9ca3af;
}

.kod-subject-btn.active {
	background: #2563eb;
	border-color: #2563eb;
	color: #fff;
}

.kod-stats {
	margin-bottom: 20px;
}

.kod-stat {
	font-size: 14px;
	color: #6b7280;
	margin-bottom: 8px;
}

.kod-stat span {
	font-weight: 600;
	color: #111827;
}

.kod-progress-bar {
	height: 8px;
	background: #e5e7eb;
	border-radius: 999px;
	overflow: hidden;
}

.kod-progress-fill {
	height: 100%;
	background: linear-gradient(90deg, #60a5fa, #2563eb);
	border-radius: 999px;
	transition: width 0.3s ease;
}

.kod-checklist {
	margin-top: 16px;
}

.kod-item {
	background: #fff;
	border: 1px solid #e5e7eb;
	border-radius: 12px;
	margin-bottom: 10px;
	overflow: hidden;
	box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.kod-item-summary {
	display: flex;
	align-items: flex-start;
	gap: 12px;
	padding: 14px 16px;
	cursor: pointer;
	font-weight: 500;
	background: #f9fafb;
	list-style: none;
}

.kod-item-summary::-webkit-details-marker {
	display: none;
}

.kod-item-summary::before {
	content: '▸';
	display: inline-block;
	transition: transform 0.2s;
	color: #6b7280;
	font-size: 14px;
}

.kod-item[open] .kod-item-summary::before {
	transform: rotate(90deg);
}

.kod-item-summary:hover {
	background: #f3f4f6;
}

.kod-item-num {
	flex-shrink: 0;
	font-size: 13px;
	color: #6b7280;
	min-width: 80px;
}

.kod-item-title {
	flex: 1;
	min-width: 0;
	font-size: 15px;
	color: #111827;
	word-wrap: break-word;
}

.kod-subitems {
	padding: 12px 16px 16px 44px;
	border-top: 1px solid #e5e7eb;
}

.kod-subitem {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 10px 0;
	border-bottom: 1px solid #f3f4f6;
	cursor: pointer;
}

.kod-subitem:last-child {
	border-bottom: 0;
}

.kod-subitem-done .kod-subitem-text {
	text-decoration: line-through;
	color: #6b7280;
}

.kod-check {
	width: 20px;
	height: 20px;
	flex-shrink: 0;
	cursor: pointer;
	accent-color: #2563eb;
}

.kod-check-enabled {
	cursor: pointer;
}

.kod-check-disabled {
	cursor: not-allowed;
	opacity: 0.6;
}

.kod-subitem-code {
	flex-shrink: 0;
	font-size: 12px;
	font-family: monospace;
	color: #6b7280;
	min-width: 48px;
}

.kod-subitem-text {
	flex: 1;
	min-width: 0;
	font-size: 14px;
	color: #374151;
	line-height: 1.4;
	word-wrap: break-word;
	overflow-wrap: break-word;
}

.kod-subitem-empty {
	font-size: 14px;
	color: #9ca3af;
	padding: 8px 0;
}

.kod-empty {
	color: #6b7280;
	font-size: 14px;
	padding: 24px;
	text-align: center;
}

.kod-box {
	background: #fff;
	border: 1px solid #e5e7eb;
	border-radius: 12px;
	padding: 24px;
	text-align: center;
}

.kod-box h1 {
	margin: 0 0 12px;
}

.kod-box p {
	margin: 0;
	color: #6b7280;
}

@media (max-width: 640px) {
	.kod-wrap {
		padding: 0 20px;
	}

	.kod-subitems {
		padding: 12px 12px 16px 12px;
	}

	.kod-item-summary {
		flex-wrap: wrap;
		padding: 12px;
		gap: 8px;
	}

	.kod-item-title {
		flex: 1 1 100%;
	}

	.kod-item-num {
		min-width: 0;
	}

	.kod-subitem {
		gap: 8px;
	}

	.kod-subitem-code {
		min-width: 40px;
	}
}