:root {
    --bg-dark: #0f1115;
    --surface: #181b21;
    --surface-hover: #22262e;
    --border: #2f343e;
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --danger: #ef4444;
    --success: #10b981;
    --warning: #f59e0b;
    --info: #3b82f6;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.5;
    font-size: 14px;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* Layout */
.app-container {
    display: flex;
    min-height: 100vh;
    width: 100%;
    overflow: hidden; /* Prevent body scroll if content fits */
}

/* Sidebar */
.sidebar {
    width: 260px;
    min-width: 260px;
    background-color: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: sticky;
    top: 0;
    overflow-y: auto;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: var(--primary);
    border-radius: 6px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 800;
    color: white;
}

.nav-links {
    flex: 1;
    list-style: none;
    padding: 1rem 0;
    overflow-y: auto;
}

.nav-section {
    padding: 0.75rem 1.5rem 0.25rem;
    font-xs: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    font-size: 0.7rem;
}

.nav-links li a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 1.5rem;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all 0.2s;
    text-decoration: none;
    border-left: 3px solid transparent;
}

.nav-links li a:hover {
    background-color: var(--surface-hover);
    color: var(--text-primary);
}

.nav-links li a.active {
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    border-left-color: var(--primary);
}

.icon {
    width: 20px;
    text-align: center;
    font-size: 1.1em;
}

.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--surface);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    overflow: hidden;
}

.user-avatar {
    width: 32px;
    height: 32px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 600;
    color: white;
    flex-shrink: 0;
}

.user-details {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.username {
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.9rem;
}

.role {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: capitalize;
}

.logout-btn {
    color: var(--text-secondary);
    padding: 0.5rem;
    border-radius: 4px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
    background-color: var(--bg-dark);
    height: 100vh;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.text-muted {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Cards */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.card h3 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

/* Stats */
.stat-row {
    display: flex;
    justify-content: space-around;
    align-items: center;
    text-align: center;
    padding: 1rem 0;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stat-val {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    font-size: 0.9rem;
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    text-decoration: none;
}

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

.btn-secondary:hover {
    background-color: var(--surface-hover);
    border-color: var(--text-secondary);
    text-decoration: none;
}

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

.btn-danger:hover {
    background-color: rgba(239, 68, 68, 0.2);
    text-decoration: none;
}

.btn-secondary-sm, .btn-primary-sm, .btn-danger-sm {
    padding: 0.3rem 0.75rem;
    font-size: 0.8rem;
    border-radius: 4px;
    cursor: pointer;
    border: none;
    text-decoration: none;
    display: inline-block;
}

.btn-secondary-sm {
    background: var(--surface-hover);
    color: var(--text-primary);
    border: 1px solid var(--border);
}
.btn-secondary-sm:hover {
    border-color: var(--text-secondary);
    text-decoration: none;
}

.btn-primary-sm {
    background: var(--primary);
    color: white;
}
.btn-primary-sm:hover {
    background: var(--primary-hover);
    text-decoration: none;
}

.btn-danger-sm {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}
.btn-danger-sm:hover {
    background: rgba(239, 68, 68, 0.2);
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border-radius: 6px;
    border: 1px solid var(--border);
    background-color: rgba(0, 0, 0, 0.2);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color 0.2s;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

td {
    color: var(--text-primary);
    font-size: 0.9rem;
}

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

/* Badges */
.badge {
    padding: 0.25rem 0.6rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    display: inline-block;
}

.badge-open, .badge-active, .badge-staff, .badge-admin {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

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

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

.badge-low {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info);
}

.badge-hardware {
    background: rgba(139, 92, 246, 0.1);
    color: #8b5cf6;
}

.badge-software {
    background: rgba(236, 72, 153, 0.1);
    color: #ec4899;
}

/* Login Page Specifics */
.login-body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--bg-dark);
}

.login-container {
    background: var(--surface);
    padding: 2.5rem; 
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    width: 100%;
    max-width: 400px;
    position: relative;
    z-index: 10;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.login-header p {
    color: var(--text-secondary);
}

.login-footer {
    margin-top: 1.5rem;
    text-align: center;
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        min-width: 100%;
        height: auto;
        min-height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border);
        flex-direction: row;
        overflow-x: auto;
        padding: 0.75rem;
        position: relative;
    }

    .nav-links {
        display: flex;
        flex-direction: row;
        gap: 0.5rem;
        padding: 0;
    }
    
    .logo {
        margin-right: 1rem;
    }
    
    .nav-section, .sidebar-footer {
        display: none; /* Simplify mobile menu */
    }

    .main-content {
        width: 100%;
        padding: 1rem;
    }
}