:root {
    --pl-bg: #f4f6fa;
    --pl-surface: #ffffff;
    --pl-surface-muted: #f8fafc;
    --pl-border: #e2e8f0;
    --pl-border-strong: #cbd5e1;
    --pl-text: #0f172a;
    --pl-text-muted: #64748b;
    --pl-sidebar-bg: #0f172a;
    --pl-sidebar-hover: rgba(255, 255, 255, 0.08);
    --pl-sidebar-active: rgba(249, 115, 22, 0.16);
    --pl-brand: #ea580c;
    --pl-brand-hover: #c2410c;
    --pl-accent: #4f46e5;
    --pl-accent-soft: #eef2ff;
    --pl-success: #059669;
    --pl-success-soft: #ecfdf5;
    --pl-danger: #dc2626;
    --pl-danger-soft: #fef2f2;
    --pl-warning: #d97706;
    --pl-warning-soft: #fffbeb;
    --pl-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
    --pl-shadow-md: 0 4px 16px -2px rgba(15, 23, 42, 0.08), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
    --pl-shadow-lg: 0 20px 45px -10px rgba(15, 23, 42, 0.22);
    --pl-radius: 12px;
    --pl-radius-sm: 8px;
}

html, body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--pl-bg);
    color: var(--pl-text);
    -webkit-font-smoothing: antialiased;
}

/* App Shell */
.pl-shell {
    display: flex;
    min-height: 100vh;
}

.pl-sidebar {
    width: 268px;
    flex-shrink: 0;
    background: linear-gradient(180deg, #0f172a 0%, #172033 100%);
    color: #e2e8f0;
    display: flex;
    flex-direction: column;
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    position: sticky;
    top: 0;
    height: 100vh;
    z-index: 30;
}

.pl-sidebar-brand {
    padding: 1.25rem 1.25rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.pl-brand-mark {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    display: grid;
    place-items: center;
    color: #fff;
    font-weight: 800;
    font-size: 1.1rem;
    box-shadow: 0 6px 16px rgba(234, 88, 12, 0.35);
    flex-shrink: 0;
}

.pl-brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.pl-brand-title {
    font-weight: 700;
    font-size: 1rem;
    color: #fff;
    letter-spacing: -0.01em;
}

.pl-brand-sub {
    font-size: 0.72rem;
    color: #94a3b8;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.pl-nav-section {
    padding: 1rem 0.85rem 0.25rem;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #64748b;
}

.pl-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.35rem 0.75rem;
    flex: 1;
    overflow-y: auto;
}

.pl-nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 0.85rem;
    border-radius: var(--pl-radius-sm);
    color: #cbd5e1;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.15s ease;
    border: 1px solid transparent;
    cursor: pointer;
    background: transparent;
    width: 100%;
    text-align: left;
}

.pl-nav-link:hover {
    background: var(--pl-sidebar-hover);
    color: #fff;
}

.pl-nav-link.active {
    background: var(--pl-sidebar-active);
    color: #fb923c;
    border-color: rgba(249, 115, 22, 0.28);
    font-weight: 600;
}

.pl-nav-link svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.pl-role-notice {
    margin: 0.75rem;
    padding: 0.75rem 0.85rem;
    border-radius: var(--pl-radius-sm);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 0.76rem;
    color: #94a3b8;
    line-height: 1.4;
}

.pl-sidebar-footer {
    padding: 0.85rem 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(0, 0, 0, 0.18);
}

.pl-user-chip {
    display: flex;
    align-items: center;
    gap: 0.7rem;
}

.pl-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, #4f46e5, #0ea5e9);
    color: #fff;
    font-weight: 700;
    font-size: 0.85rem;
    display: grid;
    place-items: center;
    flex-shrink: 0;
}

/* Main Content Area */
.pl-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.pl-topbar {
    height: 64px;
    background: var(--pl-surface);
    border-bottom: 1px solid var(--pl-border);
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    position: sticky;
    top: 0;
    z-index: 20;
}

.pl-topbar-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 0;
}

.pl-topbar-right {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    flex-wrap: wrap;
}

.pl-content {
    padding: 1.5rem;
    max-width: 1440px;
    width: 100%;
    margin: 0 auto;
    flex: 1;
}

/* Cards & Surfaces */
.pl-card {
    background: var(--pl-surface);
    border: 1px solid var(--pl-border);
    border-radius: var(--pl-radius);
    box-shadow: var(--pl-shadow-sm);
}

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

.pl-card-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--pl-text);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pl-card-body {
    padding: 1.25rem;
}

.pl-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.pl-stat-card {
    background: var(--pl-surface);
    border: 1px solid var(--pl-border);
    border-radius: var(--pl-radius);
    padding: 1.15rem 1.25rem;
    box-shadow: var(--pl-shadow-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.pl-stat-card:hover {
    transform: translateY(-1px);
    box-shadow: var(--pl-shadow-md);
}

.pl-stat-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--pl-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.pl-stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--pl-text);
    line-height: 1.2;
    margin-top: 0.25rem;
}

.pl-stat-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    flex-shrink: 0;
}

/* Dashboard 2x2 Grid */
.pl-dashboard-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
}

/* Page Header */
.pl-page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}

.pl-page-title {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin: 0;
    color: var(--pl-text);
}

.pl-page-subtitle {
    margin: 0.2rem 0 0;
    color: var(--pl-text-muted);
    font-size: 0.9rem;
}

/* Toolbar & Filter Bar */
.pl-toolbar {
    background: var(--pl-surface);
    border: 1px solid var(--pl-border);
    border-radius: var(--pl-radius);
    padding: 0.85rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
    box-shadow: var(--pl-shadow-sm);
}

.pl-toolbar-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Buttons */
.pl-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.5rem 0.95rem;
    font-size: 0.86rem;
    font-weight: 600;
    border-radius: var(--pl-radius-sm);
    border: 1px solid var(--pl-border-strong);
    background: var(--pl-surface);
    color: var(--pl-text);
    cursor: pointer;
    transition: all 0.15s ease;
    text-decoration: none;
    white-space: nowrap;
}

.pl-btn:hover:not(:disabled) {
    background: var(--pl-surface-muted);
    border-color: #94a3b8;
}

.pl-btn:disabled {
    opacity: 0.48;
    cursor: not-allowed;
}

.pl-btn-primary {
    background: var(--pl-brand);
    border-color: var(--pl-brand);
    color: #fff;
}

.pl-btn-primary:hover:not(:disabled) {
    background: var(--pl-brand-hover);
    border-color: var(--pl-brand-hover);
    color: #fff;
}

.pl-btn-indigo {
    background: var(--pl-accent);
    border-color: var(--pl-accent);
    color: #fff;
}

.pl-btn-indigo:hover:not(:disabled) {
    background: #4338ca;
    border-color: #4338ca;
    color: #fff;
}

.pl-btn-danger-soft {
    background: var(--pl-danger-soft);
    border-color: #fecaca;
    color: var(--pl-danger);
}

.pl-btn-danger-soft:hover:not(:disabled) {
    background: #fee2e2;
}

.pl-btn-sm {
    padding: 0.35rem 0.65rem;
    font-size: 0.8rem;
}

.pl-btn-icon {
    padding: 0.42rem 0.55rem;
}

/* Form Controls */
.pl-input, .pl-select {
    padding: 0.48rem 0.75rem;
    font-size: 0.88rem;
    border: 1px solid var(--pl-border-strong);
    border-radius: var(--pl-radius-sm);
    background: #fff;
    color: var(--pl-text);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.pl-input:focus, .pl-select:focus {
    outline: none;
    border-color: var(--pl-accent);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.14);
}

.pl-input[readonly], .pl-input:disabled {
    background: #f1f5f9;
    color: #475569;
}

.pl-form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: #334155;
    margin-bottom: 0.32rem;
}

.pl-required::after {
    content: " *";
    color: var(--pl-danger);
}

/* Modern Tables */
.pl-table-wrap {
    overflow-x: auto;
}

.pl-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

.pl-table thead th {
    text-align: left;
    padding: 0.75rem 1rem;
    font-size: 0.74rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--pl-text-muted);
    background: var(--pl-surface-muted);
    border-bottom: 1px solid var(--pl-border);
    white-space: nowrap;
}

.pl-table tbody td {
    padding: 0.8rem 1rem;
    border-bottom: 1px solid var(--pl-border);
    vertical-align: middle;
}

.pl-table tbody tr {
    transition: background-color 0.12s ease;
}

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

.pl-table tbody tr.selected {
    background-color: #fff7ed;
}

.pl-table tbody tr.selected td:first-child {
    box-shadow: inset 3px 0 0 var(--pl-brand);
}

.pl-table tbody tr:last-child td {
    border-bottom: none;
}

/* Badges */
.pl-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.22rem 0.6rem;
    border-radius: 999px;
    font-size: 0.74rem;
    font-weight: 600;
    white-space: nowrap;
}

.pl-badge-slate { background: #f1f5f9; color: #334155; }
.pl-badge-indigo { background: #eef2ff; color: #4338ca; }
.pl-badge-emerald { background: #ecfdf5; color: #047857; }
.pl-badge-amber { background: #fffbeb; color: #b45309; }
.pl-badge-rose { background: #fef2f2; color: #b91c1c; }
.pl-badge-orange { background: #fff7ed; color: #c2410c; }

.pl-code-pill {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    background: #f1f5f9;
    color: #0f172a;
    border: 1px solid #e2e8f0;
}

/* Master-Detail Sites and Areas */
.pl-master-detail {
    display: grid;
    grid-template-columns: 1fr 1.15fr;
    gap: 1.25rem;
    align-items: start;
}

/* Tabs */
.pl-tabs {
    display: flex;
    gap: 0.35rem;
    border-bottom: 1px solid var(--pl-border);
    padding: 0 1.25rem;
    background: var(--pl-surface-muted);
    border-radius: var(--pl-radius) var(--pl-radius) 0 0;
}

.pl-tab-btn {
    padding: 0.8rem 1.1rem;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--pl-text-muted);
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: all 0.15s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
}

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

.pl-tab-btn.active {
    color: var(--pl-brand);
    border-bottom-color: var(--pl-brand);
}

/* Modals */
.pl-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(4px);
    display: grid;
    place-items: center;
    padding: 1rem;
    z-index: 100;
    animation: plFadeIn 0.15s ease-out;
}

.pl-modal {
    background: var(--pl-surface);
    border-radius: 16px;
    width: 100%;
    max-width: 560px;
    box-shadow: var(--pl-shadow-lg);
    border: 1px solid var(--pl-border);
    overflow: hidden;
    animation: plSlideUp 0.18s ease-out;
}

.pl-modal-lg {
    max-width: 780px;
}

.pl-modal-header {
    padding: 1.1rem 1.35rem;
    border-bottom: 1px solid var(--pl-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--pl-surface-muted);
}

.pl-modal-title {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 700;
}

.pl-modal-body {
    padding: 1.35rem;
    max-height: 75vh;
    overflow-y: auto;
}

.pl-modal-footer {
    padding: 0.95rem 1.35rem;
    border-top: 1px solid var(--pl-border);
    background: var(--pl-surface-muted);
    display: flex;
    justify-content: flex-end;
    gap: 0.65rem;
}

/* Login Screen (Plinius Cloud) */
.pl-login-wrapper {
    min-height: 100vh;
    background: radial-gradient(circle at top right, #fff7ed 0%, #f1f5f9 45%, #e2e8f0 100%);
    display: grid;
    place-items: center;
    padding: 1.5rem;
}

.pl-login-card {
    width: 100%;
    max-width: 920px;
    background: #fff;
    border-radius: 20px;
    border: 1px solid var(--pl-border);
    box-shadow: var(--pl-shadow-lg);
    overflow: hidden;
    display: grid;
    grid-template-columns: 1.05fr 1fr;
}

.pl-login-hero {
    background: linear-gradient(145deg, #0f172a 0%, #1e293b 65%, #7c2d12 100%);
    color: #fff;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.pl-login-form-pane {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* Alert Banner */
.pl-alert {
    padding: 0.75rem 1rem;
    border-radius: var(--pl-radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    margin-bottom: 1rem;
}

.pl-alert-danger {
    background: var(--pl-danger-soft);
    border: 1px solid #fecaca;
    color: #991b1b;
}

.pl-alert-info {
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    color: #1e40af;
}

.pl-alert-warning {
    background: var(--pl-warning-soft);
    border: 1px solid #fde68a;
    color: #92400e;
}

/* Toast Notifications */
.pl-toast-container {
    position: fixed;
    bottom: 1.25rem;
    right: 1.25rem;
    z-index: 200;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    max-width: 390px;
}

.pl-toast {
    padding: 0.85rem 1rem;
    border-radius: 10px;
    background: #0f172a;
    color: #fff;
    font-size: 0.86rem;
    font-weight: 500;
    box-shadow: var(--pl-shadow-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    border-left: 4px solid var(--pl-brand);
    animation: plSlideUp 0.2s ease-out;
}

.pl-toast-success { border-left-color: #10b981; }
.pl-toast-error { border-left-color: #ef4444; }
.pl-toast-info { border-left-color: #6366f1; }

/* Dropdown Menu */
.pl-dropdown {
    position: relative;
}

.pl-dropdown-menu {
    position: absolute;
    right: 0;
    top: calc(100% + 6px);
    min-width: 220px;
    background: #fff;
    border: 1px solid var(--pl-border);
    border-radius: 10px;
    box-shadow: var(--pl-shadow-lg);
    padding: 0.4rem;
    z-index: 60;
}

.pl-dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    width: 100%;
    padding: 0.55rem 0.75rem;
    border: none;
    background: transparent;
    border-radius: 7px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--pl-text);
    text-align: left;
    cursor: pointer;
}

.pl-dropdown-item:hover {
    background: var(--pl-surface-muted);
    color: var(--pl-brand);
}

/* Mobile Sidebar Toggle */
.pl-mobile-only {
    display: none;
}

@media (max-width: 992px) {
    .pl-dashboard-grid,
    .pl-master-detail,
    .pl-login-card {
        grid-template-columns: 1fr;
    }

    .pl-sidebar {
        position: fixed;
        left: -280px;
        transition: left 0.22s ease;
    }

    .pl-sidebar.open {
        left: 0;
    }

    .pl-mobile-only {
        display: inline-flex;
    }
}

@keyframes plFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes plSlideUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.pl-step-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.15rem;
}

.pl-step-pill {
    flex: 1;
    padding: 0.45rem 0.75rem;
    border-radius: 8px;
    font-size: 0.78rem;
    font-weight: 700;
    text-align: center;
    background: #f1f5f9;
    color: #64748b;
}

.pl-step-pill.active {
    background: #fff7ed;
    color: #ea580c;
    border: 1px solid #fed7aa;
}

.pl-step-pill.done {
    background: #ecfdf5;
    color: #047857;
    border: 1px solid #a7f3d0;
}