:root {
    --primary: #4f46e5;
    --primary-light: #6366f1;
    --primary-dark: #3730a3;
    --secondary: #64748b;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;

    --bg-main: #f8fafc;
    --bg-sidebar: #1e293b;
    --bg-card: #ffffff;

    --text-main: #0f172a;
    --text-muted: #475569;
    --text-on-dark: #f1f5f9;

    --border: #cbd5e1;
    --input-focus: #c7d2fe;

    --sidebar-w: 280px;
    --header-h: 70px;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Layout Structure */
.wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styling */
.sidebar {
    width: var(--sidebar-w);
    background: var(--bg-sidebar);
    color: var(--text-on-dark);
    position: fixed;
    height: 100vh;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-header {
    padding: 2rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    text-decoration: none;
    letter-spacing: -0.025em;
    display: flex;
    align-items: center;
}

.sidebar-logo span {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-nav {
    flex: 1;
    padding: 0 1rem;
    list-style: none;
}

.sidebar-section-header {
    padding: 1.5rem 1rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 700;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-item {
    margin-bottom: 0.25rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    color: #94a3b8;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 500;
    transition: all 0.2s;
}

.nav-link i {
    width: 20px;
    height: 20px;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
}

.nav-link.active {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.35);
}

/* Main Content Area */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-w);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.top-bar {
    height: var(--header-h);
    background: #fff;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 900;
}

.content-body {
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* Cards & Containers */
.card {
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-body {
    padding: 1.5rem;
}

/* Dashboard Typography */
h1,
h2,
h3 {
    font-weight: 700;
    color: var(--text-main);
}

.page-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.page-subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 2rem;
}

/* Stats Widgets */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-widget {
    background: #fff;
    padding: 1.5rem;
    border-radius: 16px;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-info .label {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

.stat-info .value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
    display: block;
}

/* Table Styling */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table-responsive::-webkit-scrollbar {
    height: 6px;
}

.table-responsive::-webkit-scrollbar-track {
    background: #f1f5f9;
}

.table-responsive::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 10px;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
    /* Ensure table doesn't get too squished */
}

th {
    background: #f8fafc;
    padding: 1rem 1.5rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--secondary);
}

td {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.875rem;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background: #fcfcfd;
}

/* Button Component */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
    text-decoration: none;
}

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

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

.btn-outline {
    background: #fff;
    border-color: var(--border);
    color: var(--text-main);
}

.btn-outline:hover {
    background: #f8fafc;
}

/* Form Elements */
.form-group {
    margin-bottom: 1.25rem;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    transition: all 0.2s;
    font-family: inherit;
    font-size: 0.875rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--input-focus);
}

/* Badges */
.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

.badge-danger {
    background: #fee2e2;
    color: #991b1b;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.4s ease-out;
}

/* User Dropdown */
.user-dropdown-wrapper {
    position: relative;
}

.user-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding-left: 1.5rem;
    border-left: 1px solid var(--border);
    cursor: pointer;
    transition: all 0.2s;
}

.user-dropdown-toggle:hover {
    opacity: 0.8;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 15px);
    right: 0;
    width: 240px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 0.5rem;
    z-index: 1000;
}

.user-dropdown-wrapper:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-main);
    text-decoration: none;
    border-radius: 10px;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s;
}

.dropdown-item i {
    width: 18px;
    height: 18px;
    color: var(--secondary);
}

.dropdown-item:hover {
    background: #f8fafc;
    color: var(--primary);
}

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

.dropdown-divider {
    height: 1px;
    background: var(--border);
    margin: 0.5rem 0;
}

.dropdown-item.text-danger:hover {
    background: #fff1f2;
    color: var(--danger);
}

.dropdown-item.text-danger:hover i {
    color: var(--danger);
}

.dropdown-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 0.5rem;
}

.dropdown-header .name {
    display: block;
    font-weight: 700;
    color: var(--text-main);
    font-size: 0.9375rem;
}

.dropdown-header .role {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    margin-top: 0.125rem;
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    backdrop-filter: blur(5px);
}

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

.modal-card {
    background: white;
    width: 100%;
    max-width: 500px;
    border-radius: 20px;
    padding: 2.5rem;
    position: relative;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8fafc;
    cursor: pointer;
    color: #94a3b8;
    transition: all 0.2s;
}

.modal-close:hover {
    background: #f1f5f9;
    color: #0f172a;
}

/* Dashboard Layout Enhancements */
.dashboard-main-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 1280px) {
    .dashboard-main-grid {
        grid-template-columns: 1fr;
    }
}

.stat-widget {
    background: #fff;
    padding: 1.5rem;
    border-radius: 16px;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 1.25rem;
    transition: all 0.3s ease;
}

.stat-widget:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-info .label {
    font-size: 0.8125rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    margin-bottom: 0.25rem;
    display: block;
}

.stat-info .value {
    font-size: 1.6rem;
    font-weight: 750;
    color: var(--text-main);
    line-height: 1.1;
}

/* Fix for possible layout shift / sidebar overlap */
@media (min-width: 1025px) {
    .main-content {
        width: calc(100% - var(--sidebar-w));
        margin-left: var(--sidebar-w);
        flex: 1;
    }
}

/* Print Invoice Styles */
@media print {

    aside.sidebar,
    .top-bar,
    .mobile-menu-btn,
    .btn,
    button,
    .card-header span[style*="Locked"],
    form {
        display: none !important;
    }

    main.main-content {
        margin-left: 0 !important;
        padding: 0 !important;
        width: 100% !important;
    }

    .content-body {
        padding: 0 !important;
    }

    .card {
        box-shadow: none !important;
        border: 1px solid #e2e8f0 !important;
        margin-bottom: 2rem !important;
    }

    body {
        background: white !important;
    }

    .badge {
        border: 1px solid #000 !important;
        background: transparent !important;
        color: #000 !important;
    }
}