/* Theming */
:root {
	--app-bg: #f6f7fb;
	--card-bg: #ffffff;
	--text: #1c1f23;
	--muted: #6c757d;
	--border: #e9ecef;
	--accent: #0d6efd;
	--accent-soft: #e8f0ff;
	--shadow-sm: 0 1px 8px rgba(0,0,0,0.05);
	--shadow-md: 0 6px 24px rgba(0,0,0,0.08);
}

[data-theme="dark"] {
	/* Grey-blue dark theme for better readability */
	--app-bg: #0f1b2d;       /* grey-blue, not pitch black */
	--card-bg: #152338;      /* slightly lighter card for contrast */
	--text: #f2f6fb;         /* near-white for strong contrast */
	--muted: #c8d3e3;        /* brighter secondary text */
	--border: #2b3a50;       /* clearer borders */
	--accent: #79b6ff;       /* readable links/icons */
	--accent-soft: #163b63;  /* subtle primary background */
	--shadow-sm: 0 1px 8px rgba(0,0,0,0.5);
	--shadow-md: 0 6px 24px rgba(0,0,0,0.5);
}

.bg-app { background: var(--app-bg); color: var(--text); }
.app-nav { background: var(--card-bg); box-shadow: var(--shadow-sm); }

body, .card, .btn, .form-control, .form-select, .list-group-item {
	transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}

.table td, .table th { vertical-align: middle; }
.badge { font-weight: 500; }

/* Table theming */
.table {
	--bs-table-bg: var(--card-bg) !important;
	--bs-table-color: var(--text) !important;
	--bs-table-border-color: var(--border) !important;
	--bs-table-striped-bg: var(--card-bg) !important;
	--bs-table-striped-color: var(--text) !important;
	--bs-table-hover-bg: color-mix(in oklab, var(--accent) 5%, var(--card-bg)) !important;
	--bs-table-hover-color: var(--text) !important;
	background-color: var(--card-bg) !important;
	color: var(--text) !important;
	border-color: var(--border) !important;
}
.table thead th {
	background-color: var(--card-bg) !important;
	color: var(--text) !important;
	border-color: var(--border) !important;
}
.table tbody tr {
	background-color: var(--card-bg) !important;
	color: var(--text) !important;
	border-color: var(--border) !important;
}
.table tbody td {
	background-color: var(--card-bg) !important;
	color: var(--text) !important;
	border-color: var(--border) !important;
}
.table-hover tbody tr:hover {
	background-color: color-mix(in oklab, var(--accent) 5%, var(--card-bg)) !important;
	color: var(--text) !important;
}
.table-hover tbody tr:hover td {
	background-color: color-mix(in oklab, var(--accent) 5%, var(--card-bg)) !important;
	color: var(--text) !important;
}

[data-theme="dark"] .table {
	--bs-table-bg: var(--card-bg) !important;
	--bs-table-color: var(--text) !important;
	--bs-table-border-color: var(--border) !important;
	--bs-table-hover-bg: color-mix(in oklab, var(--accent) 10%, var(--card-bg)) !important;
	background-color: var(--card-bg) !important;
	color: var(--text) !important;
	border-color: var(--border) !important;
}
[data-theme="dark"] .table thead th {
	background-color: color-mix(in oklab, var(--accent) 8%, var(--card-bg)) !important;
	color: var(--text) !important;
	border-color: var(--border) !important;
}
[data-theme="dark"] .table tbody tr {
	background-color: var(--card-bg) !important;
	border-color: var(--border) !important;
}
[data-theme="dark"] .table tbody td {
	background-color: var(--card-bg) !important;
	color: var(--text) !important;
	border-color: var(--border) !important;
}
[data-theme="dark"] .table-hover tbody tr:hover {
	background-color: color-mix(in oklab, var(--accent) 10%, var(--card-bg)) !important;
}
[data-theme="dark"] .table-hover tbody tr:hover td {
	background-color: color-mix(in oklab, var(--accent) 10%, var(--card-bg)) !important;
	color: var(--text) !important;
}

.kpi-card { border: 1px solid var(--border); box-shadow: var(--shadow-md); border-radius: 14px; background: var(--card-bg); }
.item-card { border: 1px solid var(--border); box-shadow: var(--shadow-md); border-radius: 14px; background: var(--card-bg); }
.item-card h5 { color: var(--text); font-weight: 600; }

.card {
	background-color: var(--card-bg) !important;
	color: var(--text) !important;
	border-color: var(--border) !important;
}
.card-body {
	background-color: var(--card-bg) !important;
	color: var(--text) !important;
}
.table-responsive {
	background-color: var(--card-bg) !important;
	color: var(--text) !important;
}

/* Form grouping in hotfixes table */
.form-group-cell {
	background-color: color-mix(in oklab, var(--accent) 8%, var(--card-bg)) !important;
	border-left: 4px solid var(--accent) !important;
	font-weight: 600;
	vertical-align: middle !important;
}
.form-group-row:first-of-type {
	border-top: 2px solid var(--accent) !important;
}

[data-theme="dark"] .form-group-cell {
	background-color: color-mix(in oklab, var(--accent) 12%, var(--card-bg)) !important;
	border-left: 4px solid var(--accent) !important;
}

.btn-light { border-color: var(--border); }
.btn-light.active { background-color: color-mix(in oklab, var(--accent) 10%, transparent); border-color: color-mix(in oklab, var(--accent) 20%, var(--border)); color: var(--text); }

.bg-primary-subtle { background-color: var(--accent-soft) !important; }
.shadow-sm-sm { box-shadow: var(--shadow-sm) !important; }

/* Card hovers */
.item-card:hover { transform: translateY(-1px); box-shadow: 0 12px 30px rgba(0,0,0,0.12); }

/* Status accents */
.status-open { background: #1987541a; color: #198754; }
.status-progress { background: #ffc1071a; color: #ffc107; }
.status-closed { background: #6c757d1a; color: #6c757d; }

/* Dark-mode readability overrides */
[data-theme="dark"] .text-muted,
[data-theme="dark"] .text-secondary { color: var(--muted) !important; }
[data-theme="dark"] .text-primary { color: var(--accent) !important; }
[data-theme="dark"] a { color: var(--accent); }
[data-theme="dark"] a:hover { color: #9ccaff; }

[data-theme="dark"] .btn-light { background: var(--card-bg); color: var(--text); border-color: var(--border); }
[data-theme="dark"] .btn-light:hover { background: color-mix(in oklab, var(--accent) 8%, var(--card-bg)); }

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select,
[data-theme="dark"] .list-group-item { background: var(--card-bg); color: var(--text); border-color: var(--border); }
[data-theme="dark"] ::placeholder { color: var(--muted); opacity: 1; }

/* Elevate KPI icons for clarity in dark */
[data-theme="dark"] .kpi-card i { color: var(--accent) !important; }

/* Timeline Chart */
.timeline-chart-container {
	background: var(--card-bg);
	border: 1px solid var(--border);
	border-radius: 14px;
	padding: 2rem;
	box-shadow: var(--shadow-md);
	overflow-x: auto;
	margin-bottom: 2rem;
}
.timeline-chart {
	min-width: 1200px;
	position: relative;
	padding: 2rem 0 5rem;
}
.timeline-axis {
	position: relative;
	height: 4px;
	background: linear-gradient(to right, var(--accent) 0%, var(--border) 100%);
	border-radius: 2px;
	margin: 2rem 0;
}
.timeline-grid {
	display: grid;
	grid-auto-flow: column;
	grid-auto-columns: minmax(220px, 1fr);
	gap: 1.5rem;
	margin-bottom: 1rem;
}
.timeline-period {
	position: relative;
	padding-bottom: 3rem;
}
.timeline-period-label {
	position: absolute;
	bottom: -2.5rem;
	left: 0;
	right: 0;
	text-align: center;
	font-size: 0.875rem;
	font-weight: 700;
	color: var(--accent);
	text-transform: uppercase;
	letter-spacing: 0.5px;
}
.timeline-period-marker {
	position: absolute;
	bottom: -0.5rem;
	left: 50%;
	transform: translateX(-50%);
	width: 12px;
	height: 12px;
	background: var(--accent);
	border: 3px solid var(--card-bg);
	border-radius: 50%;
	box-shadow: 0 2px 6px rgba(0,0,0,0.2);
	z-index: 2;
}
.timeline-card {
	background: var(--card-bg);
	border: 1px solid var(--border);
	border-radius: 8px;
	padding: 0.75rem 1rem;
	margin-bottom: 0.75rem;
	box-shadow: var(--shadow-sm);
	position: relative;
	transition: all 0.2s ease;
	cursor: pointer;
}
.timeline-card::before {
	content: '';
	position: absolute;
	bottom: -1.5rem;
	left: 50%;
	transform: translateX(-50%);
	width: 2px;
	height: 1.5rem;
	background: var(--border);
}
.timeline-card:hover {
	transform: translateY(-3px) scale(1.02);
	box-shadow: 0 8px 20px rgba(0,0,0,0.15);
	z-index: 10;
}
.timeline-card.status-progress {
	border-left: 4px solid #ffc107;
	background: linear-gradient(to right, rgba(255, 193, 7, 0.05), var(--card-bg));
}
.timeline-card.status-closed {
	border-left: 4px solid #6c757d;
	background: linear-gradient(to right, rgba(108, 117, 125, 0.05), var(--card-bg));
	opacity: 0.85;
}
.timeline-card.status-open {
	border-left: 4px solid #198754;
	background: linear-gradient(to right, rgba(25, 135, 84, 0.05), var(--card-bg));
}
.timeline-card-title {
	font-size: 0.875rem;
	font-weight: 600;
	color: var(--text);
	line-height: 1.4;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
	text-overflow: ellipsis;
	margin: 0;
}
.timeline-card-status {
	position: absolute;
	top: 0.5rem;
	right: 0.5rem;
	font-size: 0.65rem;
	padding: 0.15rem 0.4rem;
	border-radius: 3px;
	font-weight: 600;
	opacity: 0.8;
}
.timeline-connector {
	position: absolute;
	bottom: -3rem;
	left: 50%;
	transform: translateX(-50%);
	width: 2px;
	height: 3rem;
	background: linear-gradient(to bottom, var(--border), transparent);
}