/* ============================================================
   HRIS System — Professional UI Stylesheet
   ============================================================ */

:root {
    --primary:        #2563eb;
    --primary-hover:  #1d4ed8;
    --primary-light:  #dbeafe;
    --secondary:      #64748b;
    --success:        #16a34a;
    --danger:         #dc2626;
    --warning:        #d97706;
    --info:           #0891b2;

    --bg:             #f1f5f9;
    --card-bg:        #ffffff;
    --border:         #e2e8f0;
    --text:           #1e293b;
    --text-muted:     #64748b;

    --sidebar-bg:     #0f172a;
    --sidebar-hover:  #1e293b;
    --sidebar-active: #2563eb;
    --sidebar-text:   #94a3b8;
    --sidebar-w:      255px;

    --navbar-h:       64px;
    --radius:         12px;
    --radius-lg:      16px;
    --shadow:         0 1px 3px rgba(0,0,0,0.07), 0 4px 12px rgba(0,0,0,0.04);
    --shadow-md:      0 4px 16px rgba(0,0,0,0.08), 0 1px 4px rgba(0,0,0,0.04);
    --shadow-lg:      0 10px 40px rgba(0,0,0,0.10), 0 2px 8px rgba(0,0,0,0.05);
    --transition:     0.22s cubic-bezier(0.4,0,0.2,1);
}

/* ── Dark Mode ───────────────────────────────────────────── */
[data-theme="dark"] {
    --bg:          #0b1120;
    --card-bg:     #151f32;
    --border:      #1e2d45;
    --text:        #e2e8f0;
    --text-muted:  #64748b;
    --sidebar-bg:  #080e1a;
    --sidebar-hover:#111827;
}

/* ── Base ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    line-height: 1.6;
    transition: background-color var(--transition), color var(--transition);
}

h1,h2,h3,h4,h5,h6 { font-weight: 600; }

a { color: var(--primary); }

/* ── Layout ──────────────────────────────────────────────── */
.wrapper {
    display: flex;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

/* ── Sidebar ─────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-w);
    background: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    z-index: 1030;
    transition: width var(--transition);
    overflow: hidden;
}

.sidebar.collapsed { width: 68px; }

.sidebar-header {
    height: var(--navbar-h);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 16px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    flex-shrink: 0;
}

.sidebar-brand {
    color: #fff;
    font-size: 1.15rem;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    display: flex;
    align-items: center;
    width: 100%;
    justify-content: center;
}

.sidebar-menu {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 12px 0 20px;
}

.sidebar-menu::-webkit-scrollbar { width: 3px; }
.sidebar-menu::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 4px; }

.sidebar-menu ul { list-style: none; padding: 0; margin: 0; }

.sidebar-menu li { padding: 1px 10px; }

.sidebar-menu li.mt-2,
.sidebar-menu li.mt-3 { margin-top: 8px !important; }

/* Section labels */
.sidebar-menu li small,
.sidebar-menu li.text-uppercase {
    font-size: 0.65rem !important;
    letter-spacing: 0.08em;
    color: rgba(148,163,184,0.55) !important;
    padding-left: 14px;
    display: block;
    margin-top: 14px;
    margin-bottom: 4px;
}

.sidebar-menu a {
    color: var(--sidebar-text);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 14px;
    border-radius: 8px;
    transition: all var(--transition);
    white-space: nowrap;
    font-size: 0.875rem;
}

.sidebar-menu a i {
    width: 20px;
    text-align: center;
    font-size: 1rem;
    flex-shrink: 0;
    transition: all var(--transition);
}

.sidebar-menu a:hover {
    background: var(--sidebar-hover);
    color: #e2e8f0;
}

.sidebar-menu a.active {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 12px rgba(37,99,235,0.35);
}

.sidebar.collapsed .sidebar-menu a span { display: none; }
.sidebar.collapsed .sidebar-menu li small { display: none; }
.sidebar.collapsed .sidebar-menu li.text-uppercase { display: none; }
.sidebar.collapsed .sidebar-menu a { justify-content: center; padding: 10px; }
.sidebar.collapsed .sidebar-menu a i { width: auto; }

/* ── Main Content ────────────────────────────────────────── */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

/* ── Navbar ──────────────────────────────────────────────── */
.top-navbar {
    height: var(--navbar-h);
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 1020;
    flex-shrink: 0;
    transition: background var(--transition), border-color var(--transition);
}

.nav-toggler {
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-muted);
    padding: 6px;
    border-radius: 6px;
    transition: all var(--transition);
}

.nav-toggler:hover { background: var(--bg); color: var(--text); }

/* ── Content Area ────────────────────────────────────────── */
.content-area {
    flex: 1;
    overflow-y: auto;
    padding: 28px;
}

/* ── Cards ───────────────────────────────────────────────── */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border) !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
    transition: box-shadow var(--transition), transform var(--transition);
}

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

.card-header {
    background: transparent !important;
    border-bottom: 1px solid var(--border);
    padding: 16px 20px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
}

.card-body { padding: 20px; }

/* Rounded top helper */
.rounded-top-4 { border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important; }

/* ── Stat / Gradient Cards ───────────────────────────────── */
.stat-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg) !important;
    border: none !important;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition), box-shadow var(--transition);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-card.bg-primary  { background: linear-gradient(135deg,#2563eb,#1d4ed8) !important; }
.stat-card.bg-success  { background: linear-gradient(135deg,#16a34a,#15803d) !important; }
.stat-card.bg-warning  { background: linear-gradient(135deg,#d97706,#b45309) !important; }
.stat-card.bg-danger   { background: linear-gradient(135deg,#dc2626,#b91c1c) !important; }
.card.bg-info          { background: linear-gradient(135deg,#0891b2,#0e7490) !important; border: none !important; border-radius: var(--radius-lg) !important; }

.stat-card .icon {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 3rem;
    opacity: 0.12;
    transition: all var(--transition);
}

.stat-card:hover .icon {
    transform: translateY(-50%) scale(1.15) rotate(6deg);
    opacity: 0.22;
}

/* ── Tables ──────────────────────────────────────────────── */
.table {
    color: var(--text);
}

.table thead tr {
    background: transparent;
}

.table thead th {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border) !important;
    padding: 12px 16px;
    white-space: nowrap;
}

.table tbody td {
    padding: 13px 16px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

.table-hover tbody tr:hover {
    background: rgba(37,99,235,0.03);
}

[data-theme="dark"] .table-hover tbody tr:hover {
    background: rgba(255,255,255,0.03);
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.875rem;
    padding: 7px 16px;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37,99,235,0.25);
    color: #fff;
}

.btn-light {
    background: var(--bg);
    border-color: var(--border);
    color: var(--text);
}

.btn-light:hover {
    background: var(--border);
    color: var(--text);
}

.btn-outline-primary {
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline-primary:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: translateY(-1px);
}

/* ── Badges ──────────────────────────────────────────────── */
.badge {
    font-weight: 500;
    letter-spacing: 0.02em;
}

/* ── Form Controls ───────────────────────────────────────── */
.form-control, .form-select {
    background: var(--card-bg);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 8px;
    padding: 9px 14px;
    font-size: 0.875rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus, .form-select:focus {
    background: var(--card-bg);
    color: var(--text);
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
    outline: none;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 6px;
}

.form-text {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.input-group-text {
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ── Alerts ──────────────────────────────────────────────── */
.alert {
    border-radius: var(--radius) !important;
    border: none !important;
    padding: 12px 16px;
}

/* ── Modals ──────────────────────────────────────────────── */
.modal-content {
    border: none !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow-lg);
    background: var(--card-bg);
}

.modal-header, .modal-footer {
    border: none;
}

/* ── Dropdowns ───────────────────────────────────────────── */
.dropdown-menu {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    background: var(--card-bg);
    font-size: 0.875rem;
    padding: 6px;
}

.dropdown-item {
    border-radius: 6px;
    padding: 8px 12px;
    color: var(--text);
    transition: all var(--transition);
}

.dropdown-item:hover {
    background: var(--bg);
    color: var(--primary);
}

.dropdown-header {
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 6px 12px;
}

/* ── Pagination ──────────────────────────────────────────── */
.pagination .page-link {
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 6px !important;
    margin: 0 2px;
    padding: 6px 11px;
    font-size: 0.85rem;
    background: var(--card-bg);
    transition: all var(--transition);
}

.pagination .page-link:hover,
.pagination .page-item.active .page-link {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(37,99,235,0.2);
}

/* ── DataTables ──────────────────────────────────────────── */
.dataTables_wrapper .dataTables_filter input,
.dataTables_wrapper .dataTables_length select {
    background: var(--card-bg);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 8px;
    padding: 6px 12px;
    font-size: 0.85rem;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current,
.dataTables_wrapper .dataTables_paginate .paginate_button.current:hover {
    background: var(--primary) !important;
    color: white !important;
    border: none !important;
    border-radius: 6px !important;
    box-shadow: 0 2px 8px rgba(37,99,235,0.25) !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
    border-radius: 6px !important;
    color: var(--text) !important;
    border: 1px solid transparent !important;
    padding: 4px 10px !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
    background: var(--bg) !important;
    border-color: var(--border) !important;
    color: var(--primary) !important;
}

/* ── Scrollbar ───────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(100,116,139,0.25); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: rgba(100,116,139,0.45); }

/* ── Animations ──────────────────────────────────────────── */
.fade-in {
    animation: fadeIn 0.35s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Utility ─────────────────────────────────────────────── */
.icon-box {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 0.9rem;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        height: 100%;
        transform: translateX(-100%);
    }
    .sidebar.show {
        transform: translateX(0);
        box-shadow: 4px 0 20px rgba(0,0,0,0.15);
    }
    .content-area { padding: 16px; }
}