:root {
    color-scheme: dark;
    --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 10px;
    --sidebar-width: 264px;
    --sidebar-collapsed: 80px;
    --header-height: 68px;
    --bottom-nav-height: 72px;
    --bg: #0b0f14;
    --surface: #111820;
    --surface-2: #151d27;
    --surface-3: #1a2430;
    --border: #283442;
    --border-subtle: rgba(148, 163, 184, 0.18);
    --text: #f3f7fb;
    --text-muted: #91a0b5;
    --text-soft: #b7c3d2;
    --primary: #4f9cf9;
    --primary-strong: #79b8ff;
    --primary-soft: rgba(79, 156, 249, 0.14);
    --success: #4ade80;
    --success-soft: rgba(74, 222, 128, 0.14);
    --warning: #f5c451;
    --warning-soft: rgba(245, 196, 81, 0.14);
    --danger: #ff6b6b;
    --danger-soft: rgba(255, 107, 107, 0.14);
    --purple: #a78bfa;
    --purple-soft: rgba(167, 139, 250, 0.14);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.22);
    --shadow-md: 0 16px 40px rgba(0, 0, 0, 0.26);
    --focus: 0 0 0 3px rgba(79, 156, 249, 0.28);
}

[data-theme="light"] {
    color-scheme: light;
    --bg: #f6f8fb;
    --surface: #ffffff;
    --surface-2: #f9fbfd;
    --surface-3: #eef3f8;
    --border: #d8e0ea;
    --border-subtle: rgba(15, 23, 42, 0.1);
    --text: #111827;
    --text-muted: #5b6778;
    --text-soft: #334155;
    --primary-soft: rgba(37, 99, 235, 0.1);
    --success-soft: rgba(22, 163, 74, 0.1);
    --warning-soft: rgba(217, 119, 6, 0.12);
    --danger-soft: rgba(220, 38, 38, 0.1);
    --purple-soft: rgba(124, 58, 237, 0.1);
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.08);
    --shadow-md: 0 18px 44px rgba(15, 23, 42, 0.14);
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    background: var(--bg);
}

body {
    min-height: 100vh;
    margin: 0;
    background:
        radial-gradient(circle at top right, rgba(79, 156, 249, 0.08), transparent 32rem),
        var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 14px;
    letter-spacing: 0;
}

a {
    color: inherit;
}

a:hover {
    color: inherit;
}

button,
input,
select {
    font: inherit;
}

.skip-link {
    position: fixed;
    left: var(--space-4);
    top: var(--space-4);
    z-index: 1000;
    transform: translateY(-140%);
    border-radius: var(--radius-md);
    background: var(--primary);
    color: #06111f;
    padding: var(--space-2) var(--space-4);
    font-weight: 700;
}

.skip-link:focus {
    transform: translateY(0);
}

.app-shell {
    min-height: 100vh;
}

.sidebar-backdrop {
    display: none;
}

.sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 210;
    display: flex;
    width: var(--sidebar-width);
    flex-direction: column;
    overflow-y: auto;
    border-right: 1px solid var(--border);
    background: color-mix(in srgb, var(--surface) 94%, transparent);
    backdrop-filter: blur(20px);
    transition: width 180ms ease, transform 180ms ease;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-height: var(--header-height);
    padding: 0 var(--space-5);
    border-bottom: 1px solid var(--border-subtle);
    text-decoration: none;
}

.brand-logo {
    display: grid;
    width: 40px;
    height: 40px;
    flex: 0 0 40px;
    place-items: center;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #4f9cf9, #7c3aed);
    color: #fff;
    font-weight: 800;
    letter-spacing: 0;
    box-shadow: var(--shadow-sm);
}

.brand-name {
    color: var(--text);
    font-size: 15px;
    font-weight: 760;
    line-height: 1.2;
}

.brand-sub {
    color: var(--text-muted);
    font-size: 12px;
    line-height: 1.2;
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-4) var(--space-3);
}

.nav-section-label {
    padding: var(--space-4) var(--space-3) var(--space-2);
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.app-nav-list {
    display: grid;
    gap: var(--space-1);
}

.app-nav-link {
    display: flex;
    min-height: 40px;
    align-items: center;
    gap: var(--space-3);
    border-radius: var(--radius-md);
    color: var(--text-muted);
    padding: 0 var(--space-3);
    text-decoration: none;
    transition: background 150ms ease, color 150ms ease, transform 150ms ease;
}

.app-nav-link i {
    width: 20px;
    flex: 0 0 20px;
    font-size: 17px;
    text-align: center;
}

.app-nav-link:hover {
    background: var(--surface-3);
    color: var(--text);
}

.app-nav-link.active {
    background: var(--primary-soft);
    color: var(--primary-strong);
    font-weight: 700;
}

.sidebar-footer {
    display: grid;
    gap: var(--space-4);
    padding: var(--space-4);
    border-top: 1px solid var(--border-subtle);
}

.system-health {
    display: grid;
    gap: var(--space-2);
}

.sidebar-footer-label {
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.status-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-muted);
    font-size: 12px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: var(--success);
    box-shadow: 0 0 0 4px var(--success-soft);
}

.main-content {
    min-height: 100vh;
    margin-left: var(--sidebar-width);
    transition: margin-left 180ms ease;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 150;
    display: flex;
    min-height: var(--header-height);
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    border-bottom: 1px solid var(--border-subtle);
    background: color-mix(in srgb, var(--bg) 86%, transparent);
    padding: 0 clamp(var(--space-4), 2.5vw, var(--space-8));
    backdrop-filter: blur(18px);
}

.topbar-left {
    min-width: 0;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.page-title {
    margin: 0;
    color: var(--text);
    font-size: clamp(20px, 2vw, 24px);
    font-weight: 760;
    line-height: 1.2;
}

.page-subtitle {
    margin-top: 2px;
    color: var(--text-muted);
    font-size: 13px;
}

.page-body {
    width: min(100%, 1600px);
    margin: 0 auto;
    padding: clamp(var(--space-4), 2.5vw, var(--space-8));
    padding-bottom: calc(var(--space-8) + 12px);
}

.icon-button {
    display: inline-grid;
    width: 38px;
    height: 38px;
    place-items: center;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    color: var(--text-soft);
    transition: border-color 150ms ease, background 150ms ease, color 150ms ease;
}

.icon-button:hover,
.icon-button:focus {
    border-color: color-mix(in srgb, var(--primary) 65%, var(--border));
    background: var(--surface-2);
    color: var(--text);
}

.icon-button:focus {
    box-shadow: var(--focus);
    outline: 0;
}

.mobile-menu-button {
    display: none;
}

.live-clock {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    height: 38px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    color: var(--text-muted);
    padding: 0 var(--space-3);
    font-size: 12px;
    white-space: nowrap;
}

.flash-stack {
    display: grid;
    gap: var(--space-3);
    width: min(100%, 1600px);
    margin: 0 auto;
    padding: var(--space-4) clamp(var(--space-4), 2.5vw, var(--space-8)) 0;
}

.alert {
    border-radius: var(--radius-md);
    border-color: var(--border);
    background: var(--surface);
    color: var(--text);
}

.alert-success {
    border-color: color-mix(in srgb, var(--success) 40%, var(--border));
    color: var(--success);
}

.alert-danger,
.alert-error {
    border-color: color-mix(in srgb, var(--danger) 40%, var(--border));
    color: var(--danger);
}

.dashboard-grid,
.kpi-grid {
    display: grid;
    gap: var(--space-4);
}

.kpi-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
}

.dashboard-grid {
    grid-template-columns: minmax(0, 1.75fr) minmax(320px, 0.85fr);
    align-items: start;
}

.report-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
}

.stat-card,
.surface-card,
.dark-card,
.dark-table {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, color-mix(in srgb, var(--surface-2) 92%, transparent), var(--surface));
    box-shadow: var(--shadow-sm);
}

.stat-card {
    display: flex;
    min-height: 116px;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-5);
}

.stat-icon {
    display: grid;
    width: 40px;
    height: 40px;
    flex: 0 0 40px;
    place-items: center;
    border-radius: var(--radius-md);
    font-size: 18px;
}

.icon-blue { background: var(--primary-soft); color: var(--primary-strong); }
.icon-green { background: var(--success-soft); color: var(--success); }
.icon-orange { background: var(--warning-soft); color: var(--warning); }
.icon-purple { background: var(--purple-soft); color: var(--purple); }
.icon-red { background: var(--danger-soft); color: var(--danger); }
.icon-cyan { background: rgba(34, 211, 238, 0.12); color: #67e8f9; }

.stat-info {
    min-width: 0;
}

.stat-label {
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 780;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.stat-value {
    margin-top: var(--space-2);
    color: var(--text);
    font-size: clamp(21px, 2vw, 28px);
    font-weight: 800;
    line-height: 1.12;
}

.stat-unit {
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 700;
}

.stat-meta {
    margin-top: var(--space-2);
    color: var(--text-muted);
    font-size: 12px;
}

.surface-card,
.dark-card {
    padding: var(--space-5);
}

.stack {
    display: grid;
    gap: var(--space-4);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.section-title,
.card-title {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin: 0;
    color: var(--text);
    font-size: 15px;
    font-weight: 760;
}

.section-subtitle {
    margin-top: var(--space-1);
    color: var(--text-muted);
    font-size: 13px;
}

.card-title {
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: var(--space-4);
}

.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.toolbar-group {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2);
}

.filter-card {
    padding: var(--space-4);
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(150px, 1fr));
    gap: var(--space-3);
    align-items: end;
}

.table-shell {
    overflow: hidden;
}

.table-scroll {
    overflow-x: auto;
}

.table {
    color: var(--text);
    margin: 0;
    vertical-align: middle;
}

.table thead th {
    border-bottom: 1px solid var(--border);
    background: var(--surface-2);
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 780;
    letter-spacing: 0.06em;
    padding: var(--space-3) var(--space-4);
    text-transform: uppercase;
    white-space: nowrap;
}

.table tbody td {
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-soft);
    padding: var(--space-3) var(--space-4);
}

.table tbody tr:last-child td {
    border-bottom: 0;
}

.table tbody tr:hover td {
    background: color-mix(in srgb, var(--surface-3) 55%, transparent);
}

.code-cell {
    color: var(--primary-strong) !important;
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 760;
    letter-spacing: 0.04em;
    user-select: all;
}

.muted-cell {
    color: var(--text-muted) !important;
    font-size: 12.5px;
}

.status-badge,
.count-pill {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    min-height: 24px;
    border-radius: 999px;
    border: 1px solid transparent;
    padding: 0 var(--space-3);
    font-size: 11px;
    font-weight: 780;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    white-space: nowrap;
}

.badge-active { background: var(--success-soft); border-color: color-mix(in srgb, var(--success) 35%, transparent); color: var(--success); }
.badge-used { background: rgba(148, 163, 184, 0.12); border-color: rgba(148, 163, 184, 0.2); color: var(--text-soft); }
.badge-unused { background: var(--primary-soft); border-color: color-mix(in srgb, var(--primary) 35%, transparent); color: var(--primary-strong); }
.badge-expired { background: var(--danger-soft); border-color: color-mix(in srgb, var(--danger) 35%, transparent); color: var(--danger); }
.badge-profile { background: var(--purple-soft); border-color: color-mix(in srgb, var(--purple) 35%, transparent); color: var(--purple); }

.count-pill {
    background: var(--primary-soft);
    border-color: color-mix(in srgb, var(--primary) 30%, transparent);
    color: var(--primary-strong);
}

.form-control,
.form-select {
    min-height: 40px;
    border: 1px solid var(--border) !important;
    border-radius: var(--radius-md);
    background: var(--surface) !important;
    color: var(--text) !important;
    font-size: 14px;
}

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

.form-control:focus,
.form-select:focus {
    border-color: var(--primary) !important;
    box-shadow: var(--focus) !important;
}

.input-group-text {
    border-color: var(--border) !important;
    background: var(--surface) !important;
    color: var(--text-muted) !important;
}

.form-label {
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 720;
    letter-spacing: 0.04em;
    margin-bottom: var(--space-2);
    text-transform: uppercase;
}

.btn {
    border-radius: var(--radius-md);
    font-weight: 720;
}

.btn-accent,
.btn-primary {
    border-color: var(--primary) !important;
    background: var(--primary) !important;
    color: #07111f !important;
}

.btn-accent:hover,
.btn-primary:hover {
    border-color: var(--primary-strong) !important;
    background: var(--primary-strong) !important;
}

.btn-outline-light {
    border-color: var(--border) !important;
    color: var(--text-soft) !important;
}

.btn-outline-light:hover {
    background: var(--surface-3) !important;
    color: var(--text) !important;
}

.btn-outline-danger,
.btn-outline-warning {
    border-radius: var(--radius-md);
}

.action-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.quick-action-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-2);
}

.empty-state {
    display: grid;
    place-items: center;
    gap: var(--space-2);
    min-height: 164px;
    color: var(--text-muted);
    padding: var(--space-8) var(--space-4);
    text-align: center;
}

.empty-state i {
    color: var(--text-muted);
    font-size: 28px;
}

.row-count {
    margin-top: var(--space-3);
    color: var(--text-muted);
    font-size: 12px;
}

.bottom-nav {
    display: none;
}

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

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

body.nav-collapsed .brand-text,
body.nav-collapsed .nav-section-label,
body.nav-collapsed .app-nav-text,
body.nav-collapsed .sidebar-footer {
    display: none;
}

body.nav-collapsed .sidebar-brand,
body.nav-collapsed .app-nav-link {
    justify-content: center;
    padding-left: 0;
    padding-right: 0;
}

.login-page {
    display: grid;
    min-height: 100vh;
    place-items: center;
    padding: var(--space-6);
}

.login-card {
    width: min(100%, 420px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, var(--surface-2), var(--surface));
    box-shadow: var(--shadow-md);
    padding: var(--space-8);
}

.login-logo {
    display: grid;
    gap: var(--space-2);
    justify-items: center;
    margin-bottom: var(--space-6);
    text-align: center;
}

.login-logo img {
    width: 112px;
    max-width: 40vw;
}

.login-logo h1 {
    margin: 0;
    font-size: 22px;
    font-weight: 800;
}

.login-logo p {
    margin: 0;
    color: var(--text-muted);
}

.error-msg {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    border: 1px solid color-mix(in srgb, var(--danger) 35%, transparent);
    border-radius: var(--radius-md);
    background: var(--danger-soft);
    color: var(--danger);
    margin-bottom: var(--space-4);
    padding: var(--space-3) var(--space-4);
}

.btn-login {
    width: 100%;
    min-height: 42px;
    border: 1px solid var(--primary);
    border-radius: var(--radius-md);
    background: var(--primary);
    color: #07111f;
    font-weight: 800;
}

@media (max-width: 1280px) {
    .kpi-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

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

    .filter-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 920px) {
    .sidebar {
        transform: translateX(-105%);
        box-shadow: var(--shadow-md);
    }

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

    .sidebar-backdrop {
        position: fixed;
        inset: 0;
        z-index: 205;
        display: block;
        pointer-events: none;
        background: rgba(0, 0, 0, 0);
        transition: background 180ms ease;
    }

    body.sidebar-open .sidebar-backdrop {
        pointer-events: auto;
        background: rgba(0, 0, 0, 0.48);
    }

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

    .mobile-menu-button {
        display: inline-grid;
    }

    .desktop-collapse-button,
    .live-clock {
        display: none;
    }

    .page-body {
        padding-bottom: calc(var(--bottom-nav-height) + var(--space-6));
    }

    .bottom-nav {
        position: fixed;
        inset: auto var(--space-3) var(--space-3) var(--space-3);
        z-index: 180;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-1);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        background: color-mix(in srgb, var(--surface) 94%, transparent);
        box-shadow: var(--shadow-md);
        padding: var(--space-2);
        backdrop-filter: blur(18px);
    }

    .bottom-nav a {
        display: grid;
        justify-items: center;
        gap: 2px;
        border-radius: var(--radius-md);
        color: var(--text-muted);
        font-size: 11px;
        padding: var(--space-2);
        text-decoration: none;
    }

    .bottom-nav a.active {
        background: var(--primary-soft);
        color: var(--primary-strong);
        font-weight: 800;
    }

    .bottom-nav i {
        font-size: 17px;
    }
}

@media (max-width: 720px) {
    .kpi-grid,
    .report-grid,
    .filter-grid,
    .quick-action-grid {
        grid-template-columns: 1fr;
    }

    .toolbar,
    .section-header {
        align-items: stretch;
        flex-direction: column;
    }

    .toolbar-group {
        width: 100%;
    }

    .toolbar-group .btn,
    .toolbar-group a,
    .filter-grid .btn {
        width: 100%;
    }

    .responsive-table thead {
        display: none;
    }

    .responsive-table,
    .responsive-table tbody,
    .responsive-table tr,
    .responsive-table td {
        display: block;
        width: 100%;
    }

    .responsive-table tbody tr {
        border-bottom: 1px solid var(--border);
        padding: var(--space-3) 0;
    }

    .responsive-table tbody tr:last-child {
        border-bottom: 0;
    }

    .responsive-table tbody td {
        display: flex;
        justify-content: space-between;
        gap: var(--space-4);
        border: 0;
        padding: var(--space-2) var(--space-4);
        text-align: right;
    }

    .responsive-table tbody td::before {
        content: attr(data-label);
        color: var(--text-muted);
        font-size: 11px;
        font-weight: 780;
        letter-spacing: 0.06em;
        text-align: left;
        text-transform: uppercase;
    }

    .responsive-table .empty-state-cell {
        display: block;
        text-align: center;
    }

    .responsive-table .empty-state-cell::before {
        display: none;
    }

    .action-row {
        justify-content: flex-end;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}

@media print {
    .sidebar,
    .topbar,
    .bottom-nav,
    .toolbar,
    .btn,
    .flash-stack {
        display: none !important;
    }

    .main-content {
        margin: 0;
    }

    body {
        background: #fff;
        color: #000;
    }
}