/* Dark Theme Variables */
:root {
    --bg-primary: #1a1d21;
    --bg-secondary: #22262a;
    --bg-tertiary: #2a2f35;
    --bg-card: #22262a;
    --text-primary: #e9ecef;
    --text-secondary: #adb5bd;
    --text-muted: #6c757d;
    --border-color: #373d44;
    --primary: #0d6efd;
    --primary-hover: #0b5ed7;
    --success: #198754;
    --warning: #ffc107;
    --danger: #dc3545;
    --info: #0dcaf0;
    --sidebar-width: 250px;
}

/* Base Styles */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

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

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

/* Auth Layout */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}

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

.auth-logo h1 {
    font-size: 1.75rem;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

.auth-logo p {
    color: var(--text-secondary);
    margin: 0.5rem 0 0;
    font-size: 0.9rem;
}

/* Main Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h4 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
}

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

.nav-section {
    padding: 0.5rem 1rem;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 0.65rem 1.25rem;
    color: var(--text-secondary);
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.nav-link:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-link.active {
    background: var(--bg-tertiary);
    color: var(--primary);
    border-left-color: var(--primary);
}

.nav-link i {
    width: 20px;
    margin-right: 0.75rem;
    font-size: 1rem;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
}

/* Header */
.app-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-title {
    font-size: 1.1rem;
    font-weight: 500;
    margin: 0;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 6px;
    transition: background 0.2s;
}

.user-menu:hover {
    background: var(--bg-tertiary);
}

.user-avatar {
    width: 32px;
    height: 32px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
}

/* Page Content */
.page-content {
    padding: 1.5rem;
    flex: 1;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 1rem;
}

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

.card-header h5, .card-header h6 {
    margin: 0;
    font-weight: 600;
}

.card-body {
    padding: 1.25rem;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.stat-icon.primary { background: rgba(13, 110, 253, 0.15); color: var(--primary); }
.stat-icon.success { background: rgba(25, 135, 84, 0.15); color: var(--success); }
.stat-icon.warning { background: rgba(255, 193, 7, 0.15); color: var(--warning); }
.stat-icon.danger { background: rgba(220, 53, 69, 0.15); color: var(--danger); }
.stat-icon.info { background: rgba(13, 202, 240, 0.15); color: var(--info); }

.stat-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
}

.stat-content p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Forms */
.form-control, .form-select {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    width: 100%;
}

.form-control:focus, .form-select:focus {
    background-color: var(--bg-tertiary);
    border-color: var(--primary);
    color: var(--text-primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

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

.input-group {
    display: flex;
}

.input-group .form-control {
    border-radius: 6px 0 0 6px;
}

.input-group-text {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-left: none;
    color: var(--text-secondary);
    padding: 0.5rem 0.75rem;
    border-radius: 0 6px 6px 0;
    display: flex;
    align-items: center;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-check-input {
    width: 1rem;
    height: 1rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 6px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s;
}

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

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--border-color);
}

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

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

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

.btn-outline-primary:hover:not(:disabled) {
    background: var(--primary);
    color: white;
}

.btn-outline-danger {
    background: transparent;
    border-color: var(--danger);
    color: var(--danger);
}

.btn-outline-danger:hover:not(:disabled) {
    background: var(--danger);
    color: white;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

.btn-group {
    display: inline-flex;
}

.btn-group .btn {
    border-radius: 0;
}

.btn-group .btn:first-child {
    border-radius: 6px 0 0 6px;
}

.btn-group .btn:last-child {
    border-radius: 0 6px 6px 0;
}

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

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

.table th, .table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table tbody tr:hover {
    background: var(--bg-tertiary);
}

.table-actions {
    white-space: nowrap;
}

.table-row-inactive {
    opacity: 0.6;
}

.table-row-inactive td {
    color: var(--text-muted);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
}

.badge-primary { background: var(--primary); color: white; }
.badge-success { background: var(--success); color: white; }
.badge-warning { background: var(--warning); color: #000; }
.badge-danger { background: var(--danger); color: white; }
.badge-secondary { background: var(--text-muted); color: white; }
.badge-info { background: var(--info); color: #000; }

/* Ore Gauge */
.ore-gauge {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.ore-gauge-bar {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}
.ore-gauge-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.3s ease;
}
.ore-gauge-text {
    font-size: 0.8rem;
    display: flex;
    gap: 4px;
    align-items: baseline;
}

/* Alerts */
.alert {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.alert-danger {
    background: rgba(220, 53, 69, 0.15);
    border: 1px solid rgba(220, 53, 69, 0.3);
    color: #f8d7da;
}

.alert-success {
    background: rgba(25, 135, 84, 0.15);
    border: 1px solid rgba(25, 135, 84, 0.3);
    color: #d1e7dd;
}

.alert-warning {
    background: rgba(255, 193, 7, 0.15);
    border: 1px solid rgba(255, 193, 7, 0.3);
    color: #fff3cd;
}

/* Modal */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.modal-backdrop.show {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.9);
    transition: transform 0.3s;
}

.modal-backdrop.show .modal {
    transform: scale(1);
}

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

.modal-header h5 {
    margin: 0;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 1.25rem;
    overflow-y: auto;
    max-height: calc(90vh - 130px);
}

.modal-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

/* Loading Spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-lg {
    width: 40px;
    height: 40px;
    border-width: 3px;
}

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

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 29, 33, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state p {
    margin: 0;
}

/* Tabs */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

.tab {
    padding: 0.75rem 1.25rem;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all 0.2s;
}

.tab:hover {
    color: var(--text-primary);
}

.tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Pagination */
.pagination {
    display: flex;
    gap: 0.25rem;
    justify-content: center;
    margin-top: 1rem;
}

.page-btn {
    padding: 0.5rem 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 4px;
    cursor: pointer;
}

.page-btn:hover:not(:disabled) {
    background: var(--border-color);
}

.page-btn.active {
    background: var(--primary);
    border-color: var(--primary);
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Charts Container */
.chart-container {
    height: 300px;
    position: relative;
}

/* Search Box */
.search-box {
    position: relative;
    max-width: 300px;
}

.search-box input {
    padding-left: 2.5rem;
}

.search-box i {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

/* Toolbar */
.toolbar {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

.toolbar-left {
    display: flex;
    gap: 0.5rem;
    flex: 1;
}

.toolbar-right {
    display: flex;
    gap: 0.5rem;
}

/* Row/Col Grid */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: -0.5rem;
}

.col {
    padding: 0.5rem;
    flex: 1;
}

.col-6 { flex: 0 0 50%; max-width: 50%; }
.col-4 { flex: 0 0 33.333%; max-width: 33.333%; }
.col-3 { flex: 0 0 25%; max-width: 25%; }
.col-12 { flex: 0 0 100%; max-width: 100%; }

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mt-2 { margin-top: 1rem; }
.me-1 { margin-right: 0.25rem; }
.me-2 { margin-right: 0.5rem; }

.d-flex { display: flex; }
.align-items-center { align-items: center; }
.justify-content-between { justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }

.w-100 { width: 100%; }

.hidden { display: none !important; }

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

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

    .col-6, .col-4, .col-3 {
        flex: 0 0 100%;
        max-width: 100%;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
}