/* =============================================
   IT Asset Management System - Main Styles
   ============================================= */

:root {
    --sidebar-width: 260px;
    --sidebar-collapsed: 70px;
    --primary: #4f46e5;
    --primary-dark: #3730a3;
    --primary-light: #818cf8;
    --secondary: #64748b;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #06b6d4;
    --bg-body: #f1f5f9;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --radius: 0.5rem;
    --transition: all 0.3s ease;
}

* { box-sizing: border-box; }

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* =============================================
   Sidebar
   ============================================= */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
    color: #fff;
    z-index: 1050;
    transition: var(--transition);
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.sidebar-header {
    padding: 1.25rem 1rem;
    font-size: 1.1rem;
    font-weight: 700;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar-header i {
    font-size: 1.3rem;
    min-width: 28px;
    text-align: center;
    color: var(--primary-light);
}

.sidebar-nav {
    padding: 0.75rem 0;
}

.sidebar-link {
    display: flex;
    align-items: center;
    padding: 0.65rem 1rem;
    color: #94a3b8;
    text-decoration: none;
    transition: var(--transition);
    white-space: nowrap;
    border-left: 3px solid transparent;
}

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

.sidebar-link.active {
    color: #fff;
    background: rgba(79, 70, 229, 0.2);
    border-left-color: var(--primary-light);
}

.sidebar-link i {
    min-width: 28px;
    text-align: center;
    font-size: 1rem;
    margin-right: 0.75rem;
}

.sidebar-divider {
    border-top: 1px solid rgba(255,255,255,0.08);
    margin: 0.5rem 0;
}

.sidebar.collapsed .sidebar-text { display: none; }
.sidebar.collapsed .sidebar-link i { margin-right: 0; }
.sidebar.collapsed .sidebar-link { justify-content: center; padding: 0.75rem; }

/* =============================================
   Main Content
   ============================================= */
.main-content {
    margin-left: var(--sidebar-width);
    transition: var(--transition);
    min-height: 100vh;
}

.sidebar.collapsed ~ .main-content {
    margin-left: var(--sidebar-collapsed);
}

.top-navbar {
    background: var(--bg-card);
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1020;
}

.sidebar-toggle {
    border: none;
    font-size: 1.2rem;
    padding: 0.25rem 0.5rem;
}

.content-wrapper {
    padding: 1.5rem;
}

.page-title {
    font-weight: 600;
    color: var(--text-primary);
}

/* =============================================
   Cards & Widgets
   ============================================= */
.card {
    border: none;
    box-shadow: var(--shadow);
    border-radius: var(--radius);
    background: var(--bg-card);
    transition: var(--transition);
}

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

.stat-card {
    border: none;
    border-radius: var(--radius);
    padding: 1.25rem;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.stat-card .stat-icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 3rem;
    opacity: 0.2;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.2;
}

.stat-card .stat-label {
    font-size: 0.85rem;
    opacity: 0.9;
    margin-top: 0.25rem;
}

.bg-gradient-primary { background: linear-gradient(135deg, #4f46e5, #7c3aed); }
.bg-gradient-success { background: linear-gradient(135deg, #22c55e, #16a34a); }
.bg-gradient-warning { background: linear-gradient(135deg, #f59e0b, #d97706); }
.bg-gradient-danger { background: linear-gradient(135deg, #ef4444, #dc2626); }
.bg-gradient-info { background: linear-gradient(135deg, #06b6d4, #0891b2); }
.bg-gradient-secondary { background: linear-gradient(135deg, #64748b, #475569); }

/* =============================================
   Tables
   ============================================= */
.table thead th {
    background: #f8fafc;
    border-bottom: 2px solid var(--border-color);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.table td {
    vertical-align: middle;
    font-size: 0.9rem;
}

.table-hover tbody tr:hover {
    background-color: #f0f4ff;
}

/* =============================================
   Badges
   ============================================= */
.badge {
    font-weight: 500;
    padding: 0.4em 0.75em;
    border-radius: 0.35rem;
    font-size: 0.78rem;
}

/* =============================================
   Forms
   ============================================= */
.form-control, .form-select {
    border-color: var(--border-color);
    border-radius: var(--radius);
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(79,70,229,0.15);
}

.form-label {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.35rem;
}

/* =============================================
   Buttons
   ============================================= */
.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

.btn { border-radius: var(--radius); font-size: 0.9rem; }

.btn-sm { font-size: 0.8rem; padding: 0.3rem 0.6rem; }

.btn-action {
    width: 32px;
    height: 32px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 0.8rem;
}

/* =============================================
   Login Page
   ============================================= */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 50%, #1e1b4b 100%);
}

.login-card {
    background: var(--bg-card);
    border-radius: 1rem;
    box-shadow: 0 25px 50px rgba(0,0,0,0.25);
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
}

.login-card .login-logo {
    text-align: center;
    margin-bottom: 1.5rem;
}

.login-card .login-logo i {
    font-size: 3rem;
    color: var(--primary);
}

.login-card .login-logo h4 {
    margin-top: 0.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* =============================================
   Notification Dropdown
   ============================================= */
.notification-dropdown {
    width: 350px;
    max-height: 400px;
    overflow-y: auto;
}

.notification-item {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.notification-item:hover {
    background: #f8fafc;
}

/* =============================================
   Utilities
   ============================================= */
.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cursor-pointer { cursor: pointer; }

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.3;
}

/* Action buttons group */
.action-btns .btn {
    margin: 0 2px;
}

/* =============================================
   QR Code
   ============================================= */
.qr-container {
    display: inline-block;
    padding: 0.5rem;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
}

/* =============================================
   Responsive
   ============================================= */
@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width) !important;
    }
    .sidebar.show { transform: translateX(0); }
    .main-content { margin-left: 0 !important; }
    .sidebar-overlay {
        position: fixed;
        top: 0; left: 0; right: 0; bottom: 0;
        background: rgba(0,0,0,0.5);
        z-index: 1040;
        display: none;
    }
    .sidebar-overlay.show { display: block; }
}

@media (max-width: 576px) {
    .content-wrapper { padding: 1rem; }
    .stat-card .stat-value { font-size: 1.5rem; }
    .notification-dropdown { width: 280px; }
}

/* Print */
@media print {
    .sidebar, .top-navbar, .btn, .sidebar-overlay { display: none !important; }
    .main-content { margin-left: 0 !important; }
    .content-wrapper { padding: 0; }
}