/* ============================================
   HR & PAYROLL MANAGEMENT SYSTEM - GLOBAL THEME
   ============================================ */

:root {
    --primary-color: #2563EB;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #0ea5e9;
    --dark-sidebar: #1F2937;
    --dark-sidebar-hover: #111827;
    --light-bg: #F9FAFB;
    --card-bg: #FFFFFF;
    --border-color: #E5E7EB;
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --text-light: #9CA3AF;
}

/* ============================================
   GLOBAL STYLES
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--light-bg);
    color: var(--text-primary);
    line-height: 1.6;
}

html {
    scroll-behavior: smooth;
}

/* ============================================
   LAYOUT STYLES
   ============================================ */

.layout {
    display: flex;
    height: 100vh;
}

.sidebar {
    width: 200px;
    background-color: var(--dark-sidebar);
    color: white;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    overflow-y: auto;
    z-index: 1000;
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);
}

.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background: var(--dark-sidebar);
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

.main-content {
    flex: 1;
    margin-left: 200px;
    display: flex;
    flex-direction: column;
}

.navbar {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 0.6rem 1.2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    min-height: auto;
}

.content {
    flex: 1;
    padding: 1.6rem;
    overflow-y: auto;
}

/* ============================================
   SIDEBAR STYLES
   ============================================ */

.sidebar-header {
    padding: 1.2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 0.8rem;
}

.logo {
    font-size: 1.2rem;
    font-weight: 700;
    color: white;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.logo i {
    color: var(--primary-light);
}

.sidebar-menu {
    list-style: none;
}

.sidebar-menu-item {
    margin-bottom: 0.4rem;
}

.sidebar-menu-link {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.7rem 1.2rem;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.sidebar-menu-link:hover {
    background-color: var(--dark-sidebar-hover);
    color: white;
    border-left-color: var(--primary-light);
}

.sidebar-menu-link.active {
    background-color: var(--dark-sidebar-hover);
    color: white;
    border-left-color: var(--primary-light);
}

.sidebar-menu-link i {
    width: 16px;
    text-align: center;
}

/* ============================================
   NAVBAR STYLES
   ============================================ */

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

.user-info {
    text-align: right;
}

.user-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.75rem;
}

.user-role {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.user-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

/* ============================================
   CARDS
   ============================================ */

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.card-header {
    padding: 1.2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 1.2rem;
}

.card-footer {
    padding: 1.2rem;
    border-top: 1px solid var(--border-color);
    background-color: #FAFBFC;
    display: flex;
    justify-content: flex-end;
    gap: 0.8rem;
}

/* Card Variants */
.card-primary {
    border-left: 4px solid var(--primary-color);
}

.card-danger {
    border-left: 4px solid var(--danger-color);
}

.card-success {
    border-left: 4px solid var(--secondary-color);
}

.card-warning {
    border-left: 4px solid var(--warning-color);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: 0.3rem;
    font-size: 0.7rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background-color: #059669;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background-color: #dc2626;
}

.btn-warning {
    background-color: var(--warning-color);
    color: white;
}

.btn-warning:hover {
    background-color: #d97706;
}

.btn-info {
    background-color: var(--info-color);
    color: white;
}

.btn-info:hover {
    background-color: #0284c7;
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.6rem;
}

.btn-lg {
    padding: 0.8rem 1.6rem;
    font-size: 0.8rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

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

/* ============================================
   FORMS
   ============================================ */

.form-group {
    margin-bottom: 1.2rem;
}

.form-label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.7rem;
}

.form-label.required::after {
    content: ' *';
    color: var(--danger-color);
}

.form-control {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: 0.3rem;
    font-size: 0.7rem;
    font-family: inherit;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-control:disabled {
    background-color: #F3F4F6;
    color: var(--text-secondary);
    cursor: not-allowed;
}

.form-control-sm {
    padding: 0.4rem;
    font-size: 0.6rem;
}

.form-control-lg {
    padding: 0.8rem;
    font-size: 0.8rem;
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%232563EB' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
}

.form-row.three-col {
    grid-template-columns: repeat(3, 1fr);
}

.form-error {
    display: block;
    color: var(--danger-color);
    font-size: 0.6rem;
    margin-top: 0.2rem;
}

.form-help {
    display: block;
    color: var(--text-secondary);
    font-size: 0.6rem;
    margin-top: 0.2rem;
}

/* ============================================
   TABLES
   ============================================ */

.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--card-bg);
}

thead {
    background-color: var(--light-bg);
    border-bottom: 2px solid var(--border-color);
}

th {
    padding: 0.8rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.7rem;
}

td {
    padding: 0.8rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.7rem;
}

tbody tr {
    transition: all 0.3s ease;
}

tbody tr:hover {
    background-color: var(--light-bg);
}

tbody tr.active {
    background-color: rgba(37, 99, 235, 0.05);
}

.table-actions {
    display: flex;
    gap: 0.4rem;
}

.table-actions .btn {
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
}

/* ============================================
   ALERTS
   ============================================ */

.alert {
    padding: 0.8rem 1.2rem;
    border-radius: 0.3rem;
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    border-left: 4px solid;
}

.alert-primary {
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--secondary-color);
    border-left-color: var(--secondary-color);
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    border-left-color: var(--danger-color);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
    border-left-color: var(--warning-color);
}

.alert-info {
    background-color: rgba(14, 165, 233, 0.1);
    color: var(--info-color);
    border-left-color: var(--info-color);
}

.alert-close {
    cursor: pointer;
    font-size: 1.5rem;
    margin-left: auto;
}

/* ============================================
   BADGES
   ============================================ */

.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 9999px;
    font-size: 0.6rem;
    font-weight: 600;
}

.badge-primary {
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
}

.badge-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--secondary-color);
}

.badge-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.badge-warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

/* ============================================
   UTILITIES
   ============================================ */

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.text-muted { color: var(--text-secondary); }
.text-danger { color: var(--danger-color); }
.text-success { color: var(--secondary-color); }

.d-flex { display: flex; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }

.justify-between { justify-content: space-between; }
.items-center { align-items: center; }

.grid {
    display: grid;
}

.grid-col-1 { grid-template-columns: 1fr; }
.grid-col-2 { grid-template-columns: repeat(2, 1fr); }
.grid-col-3 { grid-template-columns: repeat(3, 1fr); }
.grid-col-4 { grid-template-columns: repeat(4, 1fr); }

.grid-gap-2 { gap: 1rem; }
.grid-gap-3 { gap: 1.5rem; }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }

    .main-content {
        margin-left: 0;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .form-row.three-col {
        grid-template-columns: 1fr;
    }

    .grid-col-2 { grid-template-columns: 1fr; }
    .grid-col-3 { grid-template-columns: 1fr; }
    .grid-col-4 { grid-template-columns: repeat(2, 1fr); }

    .content {
        padding: 1rem;
    }

    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    table {
        font-size: 0.75rem;
    }

    th, td {
        padding: 0.75rem 0.5rem;
    }
}

@media (max-width: 480px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
    }

    .grid-col-4 { grid-template-columns: 1fr; }

    .btn-sm {
        padding: 0.375rem 0.75rem;
    }

    .table-actions {
        flex-direction: column;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(-10px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.animate-slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.animate-spin {
    animation: spin 1s linear infinite;
}

/* ============================================
   LOADING SPINNER
   ============================================ */

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(37, 99, 235, 0.1);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ============================================
   MODAL/DIALOG STYLES
   ============================================ */

.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background-color: var(--card-bg);
    border-radius: 0.5rem;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

/* ============================================
   STATUS & STATE COLORS
   ============================================ */

.status-pending {
    color: var(--warning-color);
}

.status-approved {
    color: var(--secondary-color);
}

.status-rejected {
    color: var(--danger-color);
}

.status-active {
    color: var(--secondary-color);
}

.status-inactive {
    color: var(--text-secondary);
}