/* ============================================================
   HR Management System - Corporate Theme
   Modern, clean, professional design system
   ============================================================ */

/* ----------------------------------------------------------
   1. CSS Custom Properties (Design Tokens)
   ---------------------------------------------------------- */
:root {
    /* Primary Colors */
    --color-primary: #1e293b;
    --color-primary-light: #334155;
    --color-primary-dark: #0f172a;

    /* Accent */
    --color-accent: #0d9488;
    --color-accent-light: #14b8a6;
    --color-accent-dark: #0f766e;

    /* Surfaces */
    --color-surface: #ffffff;
    --color-surface-alt: #f8fafc;
    --color-border: #e2e8f0;

    /* Text */
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-text-inverse: #ffffff;

    /* Status Colors */
    --color-success: #059669;
    --color-success-light: #d1fae5;
    --color-warning: #d97706;
    --color-warning-light: #fef3c7;
    --color-danger: #dc2626;
    --color-danger-light: #fee2e2;
    --color-info: #0284c7;
    --color-info-light: #e0f2fe;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ----------------------------------------------------------
   2. Typography & Base
   ---------------------------------------------------------- */
body {
    font-family: var(--font-family) !important;
    color: var(--color-text);
    background-color: var(--color-surface-alt);
    font-size: 0.875rem;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
    font-family: var(--font-family) !important;
    font-weight: 600;
    color: var(--color-text);
}

.content-wrapper {
    background-color: var(--color-surface-alt) !important;
}

/* ----------------------------------------------------------
   3. Sidebar
   ---------------------------------------------------------- */
.main-sidebar {
    background: var(--color-primary) !important;
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: var(--shadow-lg);
}

.main-sidebar .brand-link {
    background: var(--color-primary-dark) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
    padding: 0.75rem 0.5rem;
    font-family: var(--font-family) !important;
    font-weight: 600;
}

.main-sidebar .brand-link .brand-text {
    font-weight: 600 !important;
    font-size: 0.95rem;
}

.main-sidebar .brand-image {
    max-height: 34px;
}

/* Navigation items */
.main-sidebar .nav-sidebar > .nav-item > .nav-link {
    color: rgba(255, 255, 255, 0.65) !important;
    font-family: var(--font-family) !important;
    font-size: 0.8125rem;
    font-weight: 400;
    padding: 0.6rem 1rem;
    margin: 1px 0.5rem;
    border-radius: var(--radius-sm);
    transition: all 0.15s ease;
}

.main-sidebar .nav-sidebar > .nav-item > .nav-link:hover {
    background-color: var(--color-primary-light) !important;
    color: rgba(255, 255, 255, 0.95) !important;
}

.main-sidebar .nav-sidebar > .nav-item > .nav-link.active {
    background-color: var(--color-accent) !important;
    color: var(--color-text-inverse) !important;
    font-weight: 500;
    box-shadow: 0 2px 8px rgba(13, 148, 136, 0.3);
}

/* Submenu items */
.main-sidebar .nav-sidebar .nav-treeview > .nav-item > .nav-link {
    color: rgba(255, 255, 255, 0.5) !important;
    font-size: 0.775rem;
    padding: 0.45rem 1rem 0.45rem 2rem;
    margin: 0 0.5rem;
    border-radius: var(--radius-sm);
    transition: all 0.15s ease;
}

.main-sidebar .nav-sidebar .nav-treeview > .nav-item > .nav-link:hover {
    color: rgba(255, 255, 255, 0.9) !important;
    background-color: rgba(255, 255, 255, 0.06) !important;
}

.main-sidebar .nav-sidebar .nav-treeview > .nav-item > .nav-link.active {
    color: var(--color-accent-light) !important;
    background-color: rgba(13, 148, 136, 0.12) !important;
    font-weight: 500;
}

/* Sidebar section headers */
.main-sidebar .nav-header {
    color: rgba(255, 255, 255, 0.35) !important;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 1rem 1.25rem 0.5rem;
}

/* Sidebar icons */
.main-sidebar .nav-icon {
    font-size: 0.85rem !important;
    width: 1.6rem !important;
    color: rgba(255, 255, 255, 0.45) !important;
    transition: color 0.15s ease;
}

.main-sidebar .nav-link:hover .nav-icon,
.main-sidebar .nav-link.active .nav-icon {
    color: var(--color-text-inverse) !important;
}

/* Sidebar scrollbar */
.main-sidebar .os-scrollbar-handle {
    background: rgba(255, 255, 255, 0.15) !important;
}

/* Mobile sidebar */
@media (max-width: 991.98px) {
    .main-sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease-in-out;
    }
    body.sidebar-open .main-sidebar {
        transform: translateX(0);
    }
}

/* ----------------------------------------------------------
   4. Navbar (Top Bar)
   ---------------------------------------------------------- */
.main-header.navbar {
    background-color: var(--color-surface) !important;
    border-bottom: 1px solid var(--color-border) !important;
    box-shadow: var(--shadow-sm);
    min-height: 50px;
}

.navbar-nav .nav-link {
    color: var(--color-text-muted) !important;
    font-family: var(--font-family) !important;
    font-size: 0.875rem;
    padding: 0.5rem 0.75rem !important;
    transition: color 0.15s ease;
}

.navbar-nav .nav-link:hover {
    color: var(--color-accent) !important;
}

.navbar .fa-bell {
    font-size: 1.1rem;
    color: var(--color-text-muted) !important;
}

.navbar-badge {
    background-color: var(--color-accent) !important;
    color: var(--color-text-inverse) !important;
    font-size: 0.65rem;
    font-weight: 600;
    padding: 2px 5px;
    border-radius: 10px;
}

/* ----------------------------------------------------------
   5. Cards
   ---------------------------------------------------------- */
.card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s ease;
    margin-bottom: 1.25rem;
}

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

.card-header {
    background-color: var(--color-surface) !important;
    border-bottom: 1px solid var(--color-border);
    font-weight: 600;
    font-size: 0.875rem;
    padding: 0.85rem 1.25rem;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
}

.card-title {
    font-size: 0.9rem;
    font-weight: 600;
}

.card-body {
    padding: 1.25rem;
}

.card-footer {
    background-color: var(--color-surface-alt);
    border-top: 1px solid var(--color-border);
}

/* ----------------------------------------------------------
   6. Small Boxes (Stat Cards)
   ---------------------------------------------------------- */
.small-box {
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow-md);
    transition: all 0.2s ease;
    border: none;
    position: relative;
    overflow: hidden;
}

.small-box:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.small-box h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text-inverse);
}

.small-box p {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
}

.small-box .icon {
    color: rgba(255, 255, 255, 0.15);
}

.small-box .small-box-footer {
    background: rgba(0, 0, 0, 0.1);
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.775rem;
    padding: 0.4rem 1rem;
}

.small-box .small-box-footer:hover {
    background: rgba(0, 0, 0, 0.15);
    color: var(--color-text-inverse);
}

/* ----------------------------------------------------------
   7. Info Boxes
   ---------------------------------------------------------- */
.info-box {
    border-radius: var(--radius-md) !important;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    min-height: 70px;
    transition: all 0.2s ease;
}

.info-box:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.info-box .info-box-icon {
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    width: 65px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-box .info-box-text {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    font-weight: 600;
    color: var(--color-text-muted);
}

.info-box .info-box-number {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-text);
}

/* ----------------------------------------------------------
   8. Corporate Gradient Overrides
   ---------------------------------------------------------- */
.bg-gradient-primary,
.small-box.bg-gradient-primary,
.small-box.bg-primary { background: var(--color-primary) !important; }

.bg-gradient-success,
.small-box.bg-gradient-success,
.small-box.bg-success { background: var(--color-success) !important; }

.bg-gradient-warning,
.small-box.bg-gradient-warning,
.small-box.bg-warning { background: var(--color-warning) !important; }

.bg-gradient-danger,
.small-box.bg-gradient-danger,
.small-box.bg-danger { background: var(--color-danger) !important; }

.bg-gradient-info,
.small-box.bg-gradient-info,
.small-box.bg-info { background: var(--color-info) !important; }

.bg-gradient-dark { background: var(--color-primary-dark) !important; }

.bg-gradient-secondary,
.bg-secondary { background: var(--color-text-muted) !important; }

/* Extended palette */
.bg-gradient-purple { background: #7c3aed !important; }
.bg-gradient-teal { background: var(--color-accent) !important; }
.bg-gradient-orange { background: var(--color-warning) !important; }
.bg-gradient-indigo { background: var(--color-primary) !important; }
.bg-gradient-pink { background: #db2777 !important; }
.bg-gradient-cyan { background: var(--color-info) !important; }
.bg-gradient-lime { background: var(--color-success) !important; }

/* ----------------------------------------------------------
   9. Tables
   ---------------------------------------------------------- */
.table {
    font-size: 0.8125rem;
    color: var(--color-text);
}

.table thead th {
    background-color: var(--color-surface-alt) !important;
    color: var(--color-text-muted) !important;
    font-weight: 600;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--color-border) !important;
    padding: 0.75rem 1rem;
    white-space: nowrap;
}

/* Override thead-dark to use corporate style */
.table .thead-dark th {
    background-color: var(--color-primary) !important;
    color: var(--color-text-inverse) !important;
    border-color: var(--color-primary-light) !important;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

/* Preserve colored thead variants */
.table thead.bg-danger th,
.table thead.bg-success th,
.table thead.bg-warning th,
.table thead.bg-info th,
.table thead.bg-primary th {
    color: var(--color-text-inverse) !important;
}

.table tbody td {
    color: var(--color-text);
}

.table-hover tbody tr:hover {
    background-color: #f1f5f9 !important;
}

.table td {
    padding: 0.65rem 1rem;
    vertical-align: middle;
    border-top: 1px solid var(--color-border);
    color: var(--color-text);
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(248, 250, 252, 0.5);
}

/* Ensure all table text is readable */
.table td strong,
.table td a { color: var(--color-text); }
.table .text-muted { color: var(--color-text-muted) !important; }

/* ----------------------------------------------------------
   10. Buttons
   ---------------------------------------------------------- */
.btn {
    font-family: var(--font-family);
    font-weight: 500;
    font-size: 0.8125rem;
    border-radius: var(--radius-sm);
    padding: 0.4rem 1rem;
    transition: all 0.15s ease;
}

.btn-primary {
    background-color: var(--color-accent) !important;
    border-color: var(--color-accent) !important;
    color: var(--color-text-inverse) !important;
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--color-accent-dark) !important;
    border-color: var(--color-accent-dark) !important;
    box-shadow: 0 2px 8px rgba(13, 148, 136, 0.3);
}

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

.btn-outline-primary:hover {
    background-color: var(--color-accent) !important;
    color: var(--color-text-inverse) !important;
}

.btn-sm {
    font-size: 0.75rem;
    padding: 0.3rem 0.75rem;
}

/* ----------------------------------------------------------
   11. Badges
   ---------------------------------------------------------- */
.badge {
    font-weight: 500;
    font-size: 0.7rem;
    padding: 0.3em 0.65em;
    border-radius: var(--radius-sm);
}

.badge-primary { background-color: var(--color-accent) !important; }
.badge-success { background-color: var(--color-success) !important; }
.badge-warning { background-color: var(--color-warning) !important; color: #fff !important; }
.badge-danger { background-color: var(--color-danger) !important; }
.badge-info { background-color: var(--color-info) !important; }
.badge-secondary { background-color: var(--color-text-muted) !important; }

/* ----------------------------------------------------------
   12. Dropdowns
   ---------------------------------------------------------- */
.dropdown-menu {
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    padding: 0.25rem 0;
    font-size: 0.8125rem;
}

.dropdown-menu-lg {
    max-width: 320px;
}

.dropdown-item {
    color: var(--color-text) !important;
    padding: 0.5rem 1rem;
    transition: all 0.1s ease;
    font-size: 0.8125rem;
}

.dropdown-item:hover {
    background-color: var(--color-surface-alt) !important;
    color: var(--color-accent) !important;
}

.dropdown-divider {
    border-top-color: var(--color-border);
}

/* ----------------------------------------------------------
   13. Forms
   ---------------------------------------------------------- */
.form-control {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    padding: 0.5rem 0.75rem;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
    color: var(--color-text);
}

.form-control:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
}

.form-control-sm {
    font-size: 0.75rem;
    padding: 0.35rem 0.6rem;
}

label,
.form-label {
    font-weight: 500;
    font-size: 0.8125rem;
    color: var(--color-text);
    margin-bottom: 0.3rem;
}

/* ----------------------------------------------------------
   14. Progress Bars
   ---------------------------------------------------------- */
.progress {
    height: 6px;
    border-radius: 3px;
    background-color: var(--color-border);
    overflow: hidden;
}

.progress-bar {
    border-radius: 3px;
}

.progress-bar.bg-primary,
.progress-bar.bg-gradient-primary { background-color: var(--color-accent) !important; }
.progress-bar.bg-success { background-color: var(--color-success) !important; }
.progress-bar.bg-warning { background-color: var(--color-warning) !important; }
.progress-bar.bg-danger { background-color: var(--color-danger) !important; }

/* ----------------------------------------------------------
   15. Footer
   ---------------------------------------------------------- */
.main-footer {
    background-color: var(--color-primary-dark) !important;
    color: rgba(255, 255, 255, 0.6) !important;
    border-top: none !important;
    font-size: 0.775rem;
    padding: 0.75rem 1rem;
}

.main-footer a {
    color: var(--color-accent-light) !important;
}

/* ----------------------------------------------------------
   16. Corporate Header (Dashboard)
   ---------------------------------------------------------- */
.corporate-header {
    background: var(--color-primary) !important;
    color: var(--color-text-inverse) !important;
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-lg);
    border: none;
}

.corporate-header h1,
.corporate-header h2,
.corporate-header h3 {
    color: var(--color-text-inverse) !important;
    font-weight: 700;
}

.corporate-header .badge-light {
    background: rgba(255, 255, 255, 0.15) !important;
    color: var(--color-text-inverse) !important;
    border: 1px solid rgba(255, 255, 255, 0.2);
    font-weight: 500;
}

.corporate-header .text-primary {
    color: var(--color-text-inverse) !important;
}

.corporate-header p,
.corporate-header span {
    color: rgba(255, 255, 255, 0.8);
}

.digital-clock {
    font-family: 'Inter', monospace;
    font-weight: 300;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.05em;
}

/* ----------------------------------------------------------
   17. Elevation Overrides
   ---------------------------------------------------------- */
.elevation-1 { box-shadow: var(--shadow-sm) !important; }
.elevation-2 { box-shadow: var(--shadow-md) !important; }
.elevation-3 { box-shadow: var(--shadow-lg) !important; }
.elevation-4 { box-shadow: var(--shadow-xl) !important; }

/* ----------------------------------------------------------
   18. Pagination
   ---------------------------------------------------------- */
.pagination .page-item .page-link {
    color: var(--color-text-muted);
    border-color: var(--color-border);
    font-size: 0.8125rem;
    padding: 0.4rem 0.75rem;
}

.pagination .page-item.active .page-link {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-text-inverse);
}

.pagination .page-item .page-link:hover {
    background-color: var(--color-surface-alt);
    color: var(--color-accent);
}

/* ----------------------------------------------------------
   19. Alerts
   ---------------------------------------------------------- */
.alert {
    border-radius: var(--radius-md);
    border: none;
    font-size: 0.8125rem;
}

.alert-success { background-color: var(--color-success-light); color: #065f46; }
.alert-warning { background-color: var(--color-warning-light); color: #92400e; }
.alert-danger { background-color: var(--color-danger-light); color: #991b1b; }
.alert-info { background-color: var(--color-info-light); color: #075985; }

/* ----------------------------------------------------------
   20. Preloader Override
   ---------------------------------------------------------- */
.preloader {
    background-color: var(--color-surface) !important;
}

/* ----------------------------------------------------------
   21. Avatar / User Elements
   ---------------------------------------------------------- */
.avatar-initials {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.75rem;
    color: var(--color-text-inverse);
}

/* ----------------------------------------------------------
   22. Scrollbar
   ---------------------------------------------------------- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--color-surface-alt); }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* ----------------------------------------------------------
   23. Login Page
   ---------------------------------------------------------- */
.login-page,
.register-page {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, var(--color-primary-dark) 100%) !important;
}

/* ----------------------------------------------------------
   24. DataTables
   ---------------------------------------------------------- */
.dataTables_wrapper .dataTables_filter input {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.35rem 0.6rem;
    font-size: 0.8125rem;
}

.dataTables_wrapper .dataTables_length select {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.25rem 0.5rem;
    font-size: 0.8125rem;
}

.dataTables_info,
.dataTables_paginate {
    font-size: 0.775rem;
    color: var(--color-text-muted);
}

/* ----------------------------------------------------------
   25. Department Filter Pills
   ---------------------------------------------------------- */
.department-filter-bar {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    box-shadow: var(--shadow-sm);
}

.department-pill {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.85rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--color-surface-alt);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
    transition: all 0.15s ease;
    cursor: pointer;
    text-decoration: none;
}

.department-pill:hover {
    background: var(--color-surface);
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.department-pill.active {
    background: var(--color-accent);
    color: var(--color-text-inverse);
    border-color: var(--color-accent);
    box-shadow: 0 2px 6px rgba(13, 148, 136, 0.25);
}

.pill-count {
    font-size: 0.65rem;
    background: rgba(0, 0, 0, 0.1);
    padding: 1px 6px;
    border-radius: 10px;
    margin-left: 4px;
}

.department-pill.active .pill-count {
    background: rgba(255, 255, 255, 0.25);
}

/* ----------------------------------------------------------
   26. Print
   ---------------------------------------------------------- */
@media print {
    .main-sidebar, .main-header, .main-footer, .btn, .no-print { display: none !important; }
    .content-wrapper { margin-left: 0 !important; }
    .card { box-shadow: none !important; border: 1px solid #ddd !important; }
}