:root {
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --success: #10b981;
    --success-hover: #059669;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #06b6d4;
    
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --bg-sidebar: #0f172a;
    --text-sidebar: #94a3b8;
    --text-sidebar-active: #ffffff;
    
    --text-dark: #0f172a;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 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;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-dark);
    min-height: 100vh;
}

/* Utilities */
.hidden { display: none !important; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.font-bold { font-weight: 600; }
.italic { font-style: italic; }
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }
.margin-top-md { margin-top: 1rem; }
.margin-top-lg { margin-top: 1.5rem; }
.padding-zero { padding: 0 !important; }
.padding-top-md { padding-top: 1rem; }
.border-top { border-top: 1px solid var(--border-color); }

/* Auth Login Screen */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    padding: 1.5rem;
}

.auth-card {
    background: var(--bg-card);
    width: 100%;
    max-width: 420px;
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

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

.brand-logo {
    width: 60px;
    height: 60px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.auth-header h2 {
    font-size: 1.75rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

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

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

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 0.4rem;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background-color: #fff;
    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 3px rgba(59, 130, 246, 0.15);
}

.input-readonly {
    background-color: #f1f5f9 !important;
    cursor: not-allowed;
}

/* Custom Checkbox */
.checkbox-group { display: flex; align-items: center; }
.custom-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-dark);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

.btn:active { transform: scale(0.98); }
.btn-block { width: 100%; }
.btn-sm { padding: 0.4rem 0.8rem; font-size: 0.85rem; }
.btn-lg { padding: 1rem 1.5rem; font-size: 1.05rem; font-weight: 600; }

.btn-primary { background-color: var(--primary); color: white; }
.btn-primary:hover { background-color: var(--primary-hover); }
.btn-success { background-color: var(--success); color: white; }
.btn-success:hover { background-color: var(--success-hover); }
.btn-outline { background-color: transparent; border: 1px solid var(--border-color); color: var(--text-dark); }
.btn-outline:hover { background-color: #f1f5f9; }
.btn-icon { width: 36px; height: 36px; padding: 0; border-radius: 50%; }
.btn-text-danger { background: transparent; color: var(--danger); }
.btn-text-danger:hover { background: #fee2e2; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

/* Alerts */
.alert {
    padding: 0.875rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    margin-bottom: 1.25rem;
}
.alert-danger { background-color: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.alert-success { background-color: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }

/* Main Layout */
.main-layout {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.navbar {
    height: 64px;
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1.5rem;
    z-index: 10;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.user-badge {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background-color: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
}

.user-info { display: flex; flex-direction: column; }
.user-name { font-weight: 600; font-size: 0.9rem; }
.user-role-badge {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
}

/* App Body (Sidebar + Content) */
.app-body {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    color: var(--text-sidebar);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 1.5rem 1rem;
}

.sidebar-menu {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.menu-divider {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: #475569;
    margin: 1.5rem 0.75rem 0.5rem;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    color: var(--text-sidebar);
    text-decoration: none;
    font-size: 0.925rem;
    transition: all 0.2s;
}

.menu-item:hover {
    background-color: #1e293b;
    color: white;
}

.menu-item.active {
    background-color: var(--primary);
    color: white;
    font-weight: 600;
}

/* Sidebar Quota Widget */
.sidebar-quota-card {
    background-color: #1e293b;
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-top: auto;
}

.quota-title {
    font-size: 0.8rem;
    color: #94a3b8;
    margin-bottom: 0.5rem;
}

.quota-number {
    font-size: 1.35rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.quota-progress-bar {
    height: 6px;
    background-color: #334155;
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.quota-progress-fill {
    height: 100%;
    background-color: var(--success);
    transition: width 0.3s;
}

.quota-subtext {
    font-size: 0.75rem;
    color: #64748b;
}

/* Content Area & Tabs */
.content-area {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
}

.tab-pane { display: none; }
.tab-pane.active { display: block; }

.page-header {
    margin-bottom: 2rem;
}

.page-header h2 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.page-header p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Cards & Layout */
.grid-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 1024px) {
    .grid-layout { grid-template-columns: 1fr; }
    .sidebar { width: 220px; }
}

@media (max-width: 768px) {
    .app-body { flex-direction: column; }
    .sidebar { width: 100%; height: auto; }
    .grid-layout { grid-template-columns: 1fr; }
}

.card {
    background-color: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background-color: #fff;
}

.card-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-body { padding: 1.5rem; }

/* Upload Drag & Drop Zone */
.upload-dropzone {
    border: 2px dashed #cbd5e1;
    border-radius: var(--radius-md);
    padding: 2.5rem 1.5rem;
    text-align: center;
    cursor: pointer;
    background-color: #f8fafc;
    transition: all 0.2s;
}

.upload-dropzone:hover, .upload-dropzone.dragover {
    border-color: var(--primary);
    background-color: #eff6ff;
}

.dropzone-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.upload-dropzone h4 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.upload-dropzone p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* File Preview Card */
.file-preview-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background-color: #f1f5f9;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    margin-top: 1rem;
}

.file-preview-card .file-icon {
    font-size: 2rem;
    color: #ef4444;
}

.file-details { flex: 1; }
.file-details h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 0.25rem; }
.file-meta { font-size: 0.85rem; color: var(--text-muted); }

/* Printers Selection Grid */
.printers-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.printer-card-option {
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.2s;
    background-color: #fff;
}

.printer-card-option:hover {
    border-color: #93c5fd;
    background-color: #f0f9ff;
}

.printer-card-option.selected {
    border-color: var(--primary);
    background-color: #eff6ff;
    box-shadow: 0 0 0 2px var(--primary);
}

.printer-info h4 { font-size: 0.95rem; font-weight: 600; }
.printer-info p { font-size: 0.85rem; color: var(--text-muted); }

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

.badge-info { background-color: #e0f2fe; color: #0369a1; }
.badge-success { background-color: #d1fae5; color: #065f46; }
.badge-warning { background-color: #fef3c7; color: #92400e; }
.badge-danger { background-color: #fee2e2; color: #991b1b; }

.table-responsive { width: 100%; overflow-x: auto; }
.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    text-align: left;
}

.table th {
    background-color: #f8fafc;
    padding: 0.875rem 1rem;
    font-weight: 600;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
}

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

.table tbody tr:hover { background-color: #f8fafc; }

/* Admin Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
}

.metric-card {
    background-color: #fff;
    border-radius: var(--radius-md);
    padding: 1.25rem;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1.25rem;
    box-shadow: var(--shadow-sm);
}

.metric-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.4rem;
}

.bg-primary { background-color: var(--primary); }
.bg-success { background-color: var(--success); }
.bg-warning { background-color: var(--warning); }
.bg-info { background-color: var(--info); }

.metric-info h3 { font-size: 1.6rem; font-weight: 700; line-height: 1; margin-bottom: 0.25rem; }
.metric-info span { font-size: 0.85rem; color: var(--text-muted); }

/* Modals */
.modal-backdrop {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(15, 23, 42, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
}

.modal-dialog {
    width: 100%;
    max-width: 520px;
    background-color: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

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

.modal-header h3 { font-size: 1.15rem; font-weight: 600; }
.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
}

.modal-body { padding: 1.5rem; }
.modal-footer {
    padding: 1rem 1.5rem;
    background-color: #f8fafc;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

.summary-list { display: flex; flex-direction: column; gap: 0.875rem; }
.summary-item { display: flex; justify-content: space-between; font-size: 0.95rem; }
.summary-label { color: var(--text-muted); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 1.25rem;
    right: 1.25rem;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.toast {
    min-width: 280px;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: var(--shadow-md);
    animation: slideIn 0.3s ease-out;
}

.toast-success { background-color: var(--success); }
.toast-error { background-color: var(--danger); }
.toast-info { background-color: var(--info); }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}