:root {
    --admin-bg: #eef3f7;
    --admin-surface: #ffffff;
    --admin-surface-soft: #f7fafc;
    --admin-border: #d7e0ea;
    --admin-border-strong: #c8d3df;
    --admin-text: #182536;
    --admin-muted: #66768d;
    --admin-primary: #1d4ed8;
    --admin-primary-soft: #e9f0ff;
    --admin-shadow: 0 22px 48px rgba(15, 23, 42, 0.08);
    --admin-radius-xl: 1.4rem;
    --admin-radius-lg: 1rem;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body.admin-body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(29, 78, 216, 0.08), transparent 28%),
        linear-gradient(180deg, #f8fbff 0%, var(--admin-bg) 100%);
    color: var(--admin-text);
    font-family: "Manrope", "Segoe UI", Arial, sans-serif;
}

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

.admin-sidebar {
    width: 290px;
    border-right: 1px solid var(--admin-border);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(14px);
}

.admin-sidebar .offcanvas-body {
    padding: 1.5rem;
}

.admin-brand,
.auth-brand {
    display: flex;
    align-items: center;
    gap: 0.95rem;
    color: var(--admin-text);
}

.admin-brand strong,
.auth-brand strong {
    font-size: 1rem;
    letter-spacing: -0.02em;
}

.admin-brand small,
.auth-brand small {
    color: var(--admin-muted);
}

.admin-brand-mark {
    width: 2.75rem;
    height: 2.75rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.95rem;
    background: linear-gradient(135deg, var(--admin-primary), #0f766e);
    color: #fff;
    font-weight: 800;
    letter-spacing: 0.04em;
    box-shadow: 0 10px 22px rgba(29, 78, 216, 0.22);
}

.admin-nav {
    margin-top: 2rem;
}

.admin-nav .nav-link {
    padding: 0.9rem 1rem;
    border-radius: 0.95rem;
    color: var(--admin-muted);
    font-weight: 700;
    transition: all 0.2s ease;
}

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

.admin-nav .nav-link.active {
    background: linear-gradient(135deg, var(--admin-primary-soft), #f3f8ff);
    color: var(--admin-primary);
    border: 1px solid rgba(29, 78, 216, 0.12);
}

.admin-sidebar-footer {
    padding-top: 1.5rem;
}

.admin-user-card {
    padding: 1rem;
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius-lg);
    background: var(--admin-surface-soft);
}

.admin-user-name {
    font-weight: 800;
}

.admin-user-meta {
    margin-top: 0.2rem;
    color: var(--admin-muted);
    font-size: 0.92rem;
    word-break: break-word;
}

.admin-role-badge {
    color: var(--admin-primary);
}

.admin-main {
    min-height: 100vh;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
    padding: 1.5rem 1.75rem;
    border-bottom: 1px solid rgba(215, 224, 234, 0.9);
    background: rgba(255, 255, 255, 0.74);
    backdrop-filter: blur(12px);
}

.admin-page-eyebrow {
    color: var(--admin-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.72rem;
    font-weight: 800;
    margin-bottom: 0.3rem;
}

.admin-page-title {
    margin: 0;
    font-size: clamp(1.25rem, 1.2rem + 0.8vw, 2rem);
    letter-spacing: -0.03em;
    font-weight: 800;
}

.admin-content {
    padding: 1.75rem;
}

.admin-alert {
    border-radius: 1rem;
    border: 1px solid #b7e4c7;
    box-shadow: 0 8px 18px rgba(34, 197, 94, 0.08);
}

.page-section {
    display: grid;
    gap: 1.5rem;
}

.page-card {
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius-xl);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: var(--admin-shadow);
}

.page-card .card-body {
    padding: 1.5rem;
}

.page-lead {
    color: var(--admin-muted);
    line-height: 1.75;
    max-width: 70ch;
}

.soft-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.45rem 0.7rem;
    border-radius: 999px;
    background: var(--admin-primary-soft);
    color: var(--admin-primary);
    font-size: 0.82rem;
    font-weight: 800;
}

.summary-tile {
    height: 100%;
    padding: 1.25rem;
    border-radius: 1.1rem;
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
    border: 1px solid var(--admin-border);
}

.summary-label {
    color: var(--admin-muted);
    font-size: 0.9rem;
    margin-bottom: 0.55rem;
}

.summary-value {
    font-size: 1.65rem;
    font-weight: 800;
    letter-spacing: -0.04em;
}

.summary-note {
    margin-top: 0.55rem;
    color: var(--admin-muted);
    line-height: 1.6;
    font-size: 0.92rem;
}

.admin-table thead th {
    color: var(--admin-muted);
    font-size: 0.82rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom-width: 1px;
}

.admin-table tbody td {
    vertical-align: middle;
    border-color: rgba(215, 224, 234, 0.85);
}

.mobile-computer-card {
    border: 1px solid var(--admin-border);
    border-radius: 1.15rem;
    background: var(--admin-surface);
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.05);
}

.meta-line {
    color: var(--admin-muted);
    line-height: 1.7;
}

.detail-spec {
    padding: 1rem;
    border-radius: 1rem;
    border: 1px solid var(--admin-border);
    background: linear-gradient(180deg, #ffffff 0%, #f9fbfd 100%);
    height: 100%;
}

.detail-spec-label {
    display: block;
    color: var(--admin-muted);
    font-size: 0.82rem;
    margin-bottom: 0.45rem;
}

.detail-spec-value {
    display: block;
    font-weight: 800;
    line-height: 1.55;
    word-break: break-word;
}

.qr-frame {
    border: 1px dashed var(--admin-border-strong);
    border-radius: 1.25rem;
    padding: 1rem;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 251, 253, 0.98) 100%);
}

.qr-frame img {
    width: 100%;
    max-width: 280px;
    aspect-ratio: 1;
    display: block;
    margin: 0 auto;
    object-fit: contain;
}

.qr-url-box {
    padding: 0.95rem 1rem;
    border-radius: 1rem;
    background: var(--admin-surface-soft);
    border: 1px solid var(--admin-border);
    color: var(--admin-muted);
    word-break: break-all;
    line-height: 1.65;
    font-size: 0.92rem;
}

.timeline-stack {
    display: grid;
    gap: 1rem;
}

.timeline-item {
    padding: 1.15rem;
    border: 1px solid var(--admin-border);
    border-radius: 1.1rem;
    background: linear-gradient(180deg, #ffffff 0%, #f8fbfd 100%);
}

.timeline-item-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 800;
}

.timeline-meta {
    color: var(--admin-muted);
    line-height: 1.65;
    font-size: 0.92rem;
}

.timeline-note {
    margin-top: 0.9rem;
    padding: 0.95rem 1rem;
    border-radius: 1rem;
    background: var(--admin-surface-soft);
    border: 1px solid var(--admin-border);
    line-height: 1.7;
}

.form-label {
    font-weight: 700;
    color: var(--admin-text);
}

.form-control,
.form-select {
    border-radius: 0.9rem;
    border-color: var(--admin-border-strong);
    padding-top: 0.85rem;
    padding-bottom: 0.85rem;
}

.form-control:focus,
.form-select:focus {
    border-color: rgba(29, 78, 216, 0.5);
    box-shadow: 0 0 0 0.24rem rgba(29, 78, 216, 0.14);
}

.empty-state {
    padding: 1.25rem;
    border-radius: 1rem;
    border: 1px dashed var(--admin-border-strong);
    background: #f8fafc;
    color: var(--admin-muted);
    line-height: 1.7;
}

.auth-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.auth-header {
    padding: 1.5rem;
}

.auth-content {
    flex: 1;
    display: grid;
    place-items: center;
    padding: 1rem 1rem 3rem;
}

.auth-card {
    width: min(100%, 480px);
    border: 1px solid var(--admin-border);
    border-radius: 1.5rem;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: var(--admin-shadow);
}

.auth-card .card-body {
    padding: 1.8rem;
}

.auth-side-note {
    padding: 1rem 1.1rem;
    border-radius: 1rem;
    background: var(--admin-surface-soft);
    border: 1px solid var(--admin-border);
    color: var(--admin-muted);
    line-height: 1.7;
}

@media (min-width: 992px) {
    .admin-shell {
        display: grid;
        grid-template-columns: 290px minmax(0, 1fr);
    }
}

@media (max-width: 991.98px) {
    .admin-sidebar {
        background: rgba(255, 255, 255, 0.98);
    }
}

@media (max-width: 767.98px) {
    .admin-header,
    .admin-content {
        padding: 1rem;
    }

    .page-card .card-body,
    .auth-card .card-body {
        padding: 1.1rem;
    }
}