:root {
    --shift1-color: #d5f5e3;
    --shift2-color: #d6eaf8;
    --shift3-color: #f9e79f;
    --primary-dark: #2c3e50;
    --surface: #ffffff;
    --bg: #f0f2f5;
    --text-primary: #1a1a2e;
    --text-secondary: #6c757d;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.2s ease;
}

/* ── Base ─────────────────────────────────────────────── */

body {
    background-color: var(--bg);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

/* ── Navbar ───────────────────────────────────────────── */

.bg-primary-gradient {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 40%, #0f3460 100%);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
}

.navbar {
    padding: 0.75rem 0;
}

.navbar > .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-brand {
    font-size: 1.15rem;
    letter-spacing: 0.3px;
    margin-right: auto;
}

.text-primary-dark {
    color: var(--primary-dark);
}

/* ── Cards ────────────────────────────────────────────── */

.card {
    border-radius: var(--radius);
    transition: box-shadow var(--transition), transform var(--transition);
    overflow: hidden;
}

.card.shadow-sm {
    box-shadow: var(--shadow-sm);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    border-radius: var(--radius) var(--radius) 0 0 !important;
    padding: 0.875rem 1.25rem;
}

.card-header h5,
.card-header h6 {
    font-weight: 600;
}

.card-body {
    padding: 1.25rem;
}

/* ── Shift badge colors ──────────────────────────────── */

.bg-shift1 {
    background-color: #27ae60 !important;
    color: #fff !important;
}

.bg-shift2 {
    background-color: #2980b9 !important;
    color: #fff !important;
}

.bg-shift3 {
    background-color: #e67e22 !important;
    color: #fff !important;
}

/* ── Shift summary cards ─────────────────────────────── */

.shift1-card {
    border-left: 5px solid #27ae60 !important;
    background: linear-gradient(135deg, #fff 80%, rgba(39, 174, 96, 0.06));
}

.shift2-card {
    border-left: 5px solid #2980b9 !important;
    background: linear-gradient(135deg, #fff 80%, rgba(41, 128, 185, 0.06));
}

.shift3-card {
    border-left: 5px solid #e67e22 !important;
    background: linear-gradient(135deg, #fff 80%, rgba(230, 126, 34, 0.06));
}

/* ── Roster table cells ──────────────────────────────── */

.shift1-cell {
    background-color: rgba(213, 245, 227, 0.25);
}

.shift2-cell {
    background-color: rgba(214, 234, 248, 0.25);
}

.shift3-cell {
    background-color: rgba(249, 231, 159, 0.25);
}

/* ── Roster employee items ───────────────────────────── */

.roster-emp {
    padding: 4px 8px;
    margin: 2px 0;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    font-size: 0.85rem;
    transition: background-color var(--transition);
}

.roster-emp:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.badge-sm {
    font-size: 0.6rem;
    padding: 2px 6px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

/* ── Day checkboxes ──────────────────────────────────── */

.day-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.day-checkboxes .form-check {
    background: var(--surface);
    border: 1.5px solid #dee2e6;
    border-radius: var(--radius-sm);
    padding: 8px 14px 8px 34px;
    margin: 0;
    transition: all var(--transition);
    cursor: pointer;
    user-select: none;
}

.day-checkboxes .form-check:hover {
    border-color: #adb5bd;
    background: #f8f9fa;
}

.day-checkboxes .form-check:has(input:checked) {
    background: #dbeafe;
    border-color: #2980b9;
    box-shadow: 0 0 0 1px rgba(41, 128, 185, 0.15);
}

.day-checkboxes .form-check-label {
    cursor: pointer;
    font-weight: 500;
    font-size: 0.875rem;
}

/* ── Content type checkboxes ─────────────────────────── */

.content-type-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.content-type-checkboxes .form-check {
    background: var(--surface);
    border: 1.5px solid #dee2e6;
    border-radius: var(--radius-sm);
    padding: 10px 16px 10px 36px;
    margin: 0;
    transition: all var(--transition);
    cursor: pointer;
    user-select: none;
    flex: 1;
    min-width: 140px;
}

.content-type-checkboxes .form-check:hover {
    border-color: #adb5bd;
    background: #f8f9fa;
}

.content-type-checkboxes .form-check:has(input:checked) {
    background: #e8f8f5;
    border-color: #27ae60;
    box-shadow: 0 0 0 1px rgba(39, 174, 96, 0.15);
}

.content-type-checkboxes .form-check-label {
    cursor: pointer;
    font-weight: 500;
    font-size: 0.875rem;
}

/* ── Inline project rows ─────────────────────────────── */

.project-row {
    animation: fadeUp 0.2s ease forwards;
}

.project-row .form-control,
.project-row .form-select {
    font-size: 0.85rem;
    padding: 0.35rem 0.65rem;
}

/* ── Generate card layout ────────────────────────────── */

.generate-card .form-select,
.generate-card .btn {
    height: 42px;
}

.generate-card .form-select {
    padding-right: 2.25rem;
    min-width: 90px;
}

/* ── Form controls ───────────────────────────────────── */

.form-control,
.form-select {
    border-radius: var(--radius-sm);
    border: 1.5px solid #dee2e6;
    padding: 0.5rem 0.85rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus,
.form-select:focus {
    border-color: #0f3460;
    box-shadow: 0 0 0 3px rgba(15, 52, 96, 0.1);
}

.form-label {
    font-size: 0.875rem;
    margin-bottom: 0.35rem;
    color: var(--text-primary);
}

/* ── Buttons ─────────────────────────────────────────── */

.btn {
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: all var(--transition);
    letter-spacing: 0.2px;
}

.btn-primary {
    background: linear-gradient(135deg, #0f3460 0%, #16213e 100%);
    border-color: #0f3460;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #16213e 0%, #1a1a2e 100%);
    border-color: #16213e;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(15, 52, 96, 0.3);
}

.btn-success {
    background: linear-gradient(135deg, #27ae60 0%, #219a52 100%);
    border-color: #27ae60;
}

.btn-success:hover {
    background: linear-gradient(135deg, #219a52 0%, #1e8449 100%);
    border-color: #219a52;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(39, 174, 96, 0.3);
}

.btn-outline-danger:hover {
    transform: translateY(-1px);
}

.btn-outline-light:hover {
    transform: translateY(-1px);
}

.btn-lg {
    padding: 0.65rem 1.5rem;
}

/* ── Sticky first column for roster/project table ────── */

.roster-table .sticky-col,
.project-table .sticky-col {
    position: sticky;
    left: 0;
    background-color: #fff;
    z-index: 1;
    min-width: 150px;
}

.roster-table thead .sticky-col,
.project-table thead .sticky-col {
    z-index: 2;
}

/* ── Table tweaks ────────────────────────────────────── */

.roster-table th,
.roster-table td {
    vertical-align: middle;
}

.roster-table td {
    min-width: 200px;
}

.roster-table .sticky-col {
    min-width: 170px;
    max-width: 170px;
}

.roster-table thead th,
.project-table thead th {
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

/* ── Project table ───────────────────────────────────── */

.project-table th,
.project-table td {
    vertical-align: middle;
}

.project-table td {
    min-width: 160px;
}

.project-table .sticky-col {
    min-width: 150px;
    max-width: 150px;
}

/* ── Takeover & No-cover cells ───────────────────────── */

.takeover-cell {
    background-color: #fef9e7 !important;
}

.no-cover-cell {
    background-color: #fdedec !important;
}

.bg-takeover-legend {
    background-color: #f9e79f !important;
    color: #7d6608 !important;
}

/* ── Employee table ──────────────────────────────────── */

.table-hover tbody tr {
    transition: background-color var(--transition);
}

.table thead th {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    font-weight: 600;
}

/* ── Badges ──────────────────────────────────────────── */

.badge {
    font-weight: 500;
    letter-spacing: 0.2px;
}

.badge.bg-light {
    color: var(--text-primary) !important;
}

/* ── Empty state ─────────────────────────────────────── */

.empty-state {
    padding: 3rem 1rem;
}

.empty-state i {
    opacity: 0.25;
}

.empty-state p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ── Alerts ──────────────────────────────────────────── */

.alert {
    border-radius: var(--radius);
    border: none;
}

.alert-warning {
    background-color: #fff8e1;
    color: #7c6200;
}

.alert-warning .alert-heading {
    color: #5c4900;
}

/* ── Footer ──────────────────────────────────────────── */

.footer {
    background-color: var(--surface);
    border-top: 1px solid #e9ecef;
    padding: 1rem 0;
    margin-top: 2rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ── Shift info table ────────────────────────────────── */

.shift-info-table td {
    padding: 0.5rem 0.75rem;
    vertical-align: middle;
}

/* ── Page title ──────────────────────────────────────── */

.page-title {
    position: relative;
    display: inline-block;
}

.page-title::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #27ae60, #2980b9, #e67e22);
    border-radius: 3px;
}

/* ── No-coverage badge ───────────────────────────────── */

.no-coverage {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: #dc3545;
    font-size: 0.8rem;
    padding: 4px 8px;
    background: rgba(220, 53, 69, 0.08);
    border-radius: 4px;
}

/* ── Weekend row highlight ───────────────────────────── */

.roster-table tr.weekend-row,
.project-table tr.weekend-row {
    background-color: rgba(0, 0, 0, 0.02);
}

.roster-table tr.weekend-row .sticky-col,
.project-table tr.weekend-row .sticky-col {
    background-color: #fafafa;
}

/* ── Scroll shadow for table container ───────────────── */

.table-responsive {
    position: relative;
}

/* ── Generate section ────────────────────────────────── */

.generate-card {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border: 2px dashed #ced4da !important;
}

.generate-card:hover {
    border-color: #27ae60 !important;
}

/* ── Animation for cards on load ─────────────────────── */

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: fadeUp 0.4s ease forwards;
}

.animate-in:nth-child(2) { animation-delay: 0.1s; }
.animate-in:nth-child(3) { animation-delay: 0.2s; }

/* ── Download button pulse ───────────────────────────── */

@keyframes subtlePulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(39, 174, 96, 0.3); }
    50% { box-shadow: 0 0 0 8px rgba(39, 174, 96, 0); }
}

.btn-download-pulse {
    animation: subtlePulse 2.5s infinite;
}

/* ── File Upload ─────────────────────────────────────── */

.upload-dropzone {
    border: 2px dashed #ced4da;
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: #fafbfc;
}

.upload-dropzone:hover {
    border-color: #0f3460;
    background: #f0f4fa;
}

.upload-dropzone.drag-over {
    border-color: #27ae60;
    background: #eafaf1;
    transform: scale(1.01);
}

/* ── Search ──────────────────────────────────────────── */

.search-result-card {
    background: var(--surface);
    border: 1px solid #e9ecef;
    border-radius: var(--radius-sm);
    padding: 0.875rem 1rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.search-result-card:hover {
    border-color: #adb5bd;
    box-shadow: var(--shadow-sm);
}

#searchInput {
    font-size: 0.95rem;
}

#searchInput::placeholder {
    color: #adb5bd;
}

#searchResults {
    border-top: 1px solid #e9ecef;
    max-height: 500px;
    overflow-y: auto;
}

/* ── Upload section ──────────────────────────────────── */

.upload-dropzone + .mt-3 {
    flex-wrap: wrap;
    gap: 12px;
}

/* ── Modal alignment ────────────────────────────────── */

.modal .btn {
    white-space: nowrap;
}

.modal-footer {
    gap: 8px;
}

/* ── Employee table action column ───────────────────── */

.table td .d-flex.gap-1 {
    flex-wrap: nowrap;
}

/* ── Roster table header alignment ──────────────────── */

.roster-table thead th {
    vertical-align: middle;
    line-height: 1.3;
    padding: 10px 8px;
}

.roster-table thead th small {
    display: block;
    font-size: 0.7rem;
    opacity: 0.85;
    line-height: 1.4;
}

/* ── Search bar alignment ───────────────────────────── */

.input-group .input-group-text {
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.input-group .form-control {
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ── Responsive adjustments ──────────────────────────── */

@media (max-width: 992px) {
    .col-lg-5,
    .col-lg-7 {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }
}

@media (max-width: 768px) {
    .container-fluid {
        padding-left: 12px;
        padding-right: 12px;
    }

    .roster-table td,
    .project-table td {
        min-width: 160px;
    }

    .day-checkboxes .form-check {
        padding: 6px 10px 6px 30px;
    }

    .page-title {
        font-size: 1.35rem;
    }

    .btn-lg {
        font-size: 0.95rem;
        padding: 0.55rem 1.25rem;
    }

    .content-type-checkboxes .form-check {
        min-width: 120px;
    }
}

@media (max-width: 576px) {
    .navbar-brand {
        font-size: 1rem;
    }

    .card-body {
        padding: 1rem;
    }

    .shift-info-table {
        font-size: 0.8rem;
    }
}