:root {
    --bg: #f5f8ff;
    --bg-deep: #eef4ff;
    --card: #ffffff;
    --card-soft: #f8fbff;
    --text: #172033;
    --muted: #6a748b;
    --line: #e2e8f5;
    --line-strong: #d5deef;
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-soft: #e8f1ff;
    --success: #16a34a;
    --danger: #dc2626;
    --sidebar: #111827;
    --sidebar-soft: #1f2937;
    --sidebar-line: rgba(255, 255, 255, 0.08);
    --shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: Inter, "Segoe UI", Arial, sans-serif;
    background:
        radial-gradient(circle at top left, rgba(59, 130, 246, 0.08), transparent 0 28%),
        linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
    color: var(--text);
}

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

.with-sidebar .app-layout {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    min-height: 100vh;
    transition: grid-template-columns 0.22s ease;
}

.sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    padding: 22px 16px;
    background: linear-gradient(180deg, #111827 0%, #0f172a 100%);
    color: #e5eefc;
    border-right: 1px solid var(--sidebar-line);
    overflow: hidden;
    transition: transform 0.22s ease, padding 0.22s ease;
    display: flex;
    flex-direction: column;
}

.sidebar-brand-wrap {
    padding: 8px 10px 16px;
    border-bottom: 1px solid var(--sidebar-line);
    margin-bottom: 16px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 1.15rem;
    font-weight: 800;
    color: inherit;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.subtitle {
    margin: 8px 0 0;
    color: inherit;
    opacity: 0.72;
    font-size: 0.92rem;
    line-height: 1.45;
}

.sidebar-nav {
    display: grid;
    gap: 6px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 12px;
    border-radius: 12px;
    color: #d8e3f7;
    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
    text-decoration: none;
    transform: translateX(1px);
}

.nav-link.is-active {
    background: linear-gradient(90deg, rgba(59, 130, 246, 0.22), rgba(59, 130, 246, 0.06));
    color: #fff;
    border: 1px solid rgba(96, 165, 250, 0.2);
}

.nav-icon {
    width: 24px;
    text-align: center;
    opacity: 0.95;
}

.sidebar-foot {
    margin-top: 20px;
    padding: 14px;
    border-radius: 16px;
    background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03));
    border: 1px solid var(--sidebar-line);
    display: grid;
    gap: 6px;
}

.sidebar-foot strong {
    font-size: 0.98rem;
}

.sidebar-foot p {
    color: #cbd5e1;
    font-size: 0.9rem;
}

.nav-label {
    white-space: nowrap;
}

.sidebar-backdrop {
    display: none;
}

.sidebar-copyright {
    margin-top: auto;
    padding: 14px 10px 4px;
    color: rgba(229, 238, 252, 0.72);
    font-size: 0.78rem;
    line-height: 1.45;
}

.sidebar-copyright small {
    display: block;
}

@media (min-width: 961px) {
    body.sidebar-collapsed .app-layout {
        grid-template-columns: 92px minmax(0, 1fr);
    }

    body.sidebar-collapsed .sidebar {
        padding-inline: 10px;
    }

    body.sidebar-collapsed .sidebar-brand-wrap {
        padding-inline: 6px;
    }

    body.sidebar-collapsed .sidebar .subtitle,
    body.sidebar-collapsed .sidebar .sidebar-foot,
    body.sidebar-collapsed .sidebar .nav-label,
    body.sidebar-collapsed .sidebar .brand-text,
    body.sidebar-collapsed .sidebar .sidebar-copyright {
        display: none;
    }

    body.sidebar-collapsed .sidebar .brand,
    body.sidebar-collapsed .sidebar .nav-link {
        justify-content: center;
    }

    body.sidebar-collapsed .sidebar .nav-link {
        padding-inline: 0;
    }
}

.workspace {
    min-width: 0;
    padding: 18px 18px 28px;
}

.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    padding: 4px 6px 20px;
}

.toolbar-left,
.toolbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.toolbar-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #fff;
    cursor: pointer;
    font-size: 1rem;
}

.page-title {
    font-size: 1.9rem;
    font-weight: 300;
    color: var(--text);
}

.status-pill {
    display: inline-flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary-dark);
    font-weight: 700;
    font-size: 0.85rem;
}

.user-chip {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 8px;
    background: rgba(255,255,255,0.82);
    border: 1px solid var(--line);
    border-radius: 14px;
}

.user-chip strong,
.user-chip small {
    display: block;
}

.user-chip small {
    color: var(--muted);
}

.avatar {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), #60a5fa);
    color: #fff;
    font-weight: 800;
}

.guest-shell {
    max-width: 1180px;
    margin: 0 auto;
    padding: 24px;
}

.guest-view .page {
    min-height: calc(100vh - 110px);
    align-content: center;
}

.guest-topbar {
    padding: 0 4px 18px;
}

.page {
    display: grid;
    gap: 22px;
}

.card,
.hero-card {
    background: var(--card);
    border: 1px solid rgba(226, 232, 245, 0.95);
    border-radius: 20px;
    padding: 22px;
    box-shadow: var(--shadow);
}

.hero-card {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.8fr);
    gap: 18px;
    background: linear-gradient(135deg, #ffffff 0%, #f4f8ff 65%, #edf4ff 100%);
}

.hero-card.compact {
    grid-template-columns: 1fr;
}

.hero-panel {
    display: grid;
    gap: 10px;
    align-content: start;
    padding: 14px;
    border-radius: 16px;
    background: linear-gradient(180deg, #111827 0%, #1e293b 100%);
    color: #e5eefc;
}

.hero-panel .metric {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.hero-panel .metric:last-child {
    border-bottom: 0;
}

.eyebrow {
    display: inline-block;
    margin-bottom: 6px;
    color: var(--primary);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.09em;
    font-weight: 800;
}

h1, h2, h3 { margin: 0 0 8px; }
p { margin: 0; line-height: 1.58; }

.stack-sm, .stack-md, .stack-lg { display: grid; }
.stack-sm { gap: 8px; }
.stack-md { gap: 14px; }
.stack-lg { gap: 20px; }

.page-grid {
    display: grid;
    grid-template-columns: minmax(320px, 420px) minmax(0, 1fr);
    gap: 22px;
    align-items: start;
}

.page-grid > .card,
.page-grid > .stack-md {
    align-self: start;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.8fr);
    gap: 22px;
}

.grid {
    display: grid;
    gap: 14px;
}

.grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

label span {
    display: block;
    margin-bottom: 6px;
    font-size: 0.92rem;
    color: var(--muted);
    font-weight: 700;
}

input, select, textarea {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #fff;
    color: var(--text);
    font: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

textarea { resize: vertical; }

input:focus, select:focus, textarea:focus {
    border-color: var(--primary);
    outline: 3px solid rgba(59, 130, 246, 0.12);
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.checkbox-row input { width: auto; }

.actions-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.align-end {
    align-items: end;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid transparent;
    border-radius: 12px;
    padding: 10px 14px;
    cursor: pointer;
    font-weight: 800;
    text-decoration: none;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #5fa0ff);
    color: #fff;
    box-shadow: 0 10px 24px rgba(59, 130, 246, 0.2);
}

.btn-primary:hover { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); }

.btn-secondary {
    background: #fff;
    border-color: var(--line);
    color: var(--text);
}

.btn-danger {
    background: #fff5f5;
    border-color: #fecaca;
    color: var(--danger);
}

.btn-small {
    padding: 8px 10px;
    border-radius: 10px;
}

.btn-block { width: 100%; }

.flash {
    padding: 12px 14px;
    border-radius: 14px;
    font-weight: 700;
    border: 1px solid transparent;
}

.flash-success {
    background: #ebfbf1;
    color: #14683f;
    border-color: #bde7cc;
}

.flash-error {
    background: #fff4f4;
    color: #8e2d2d;
    border-color: #f4c4c4;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.stat-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 18px;
    box-shadow: var(--shadow);
    display: grid;
    gap: 4px;
}

.stat-card strong {
    font-size: 1.85rem;
    line-height: 1.1;
}

.stat-card span {
    color: var(--muted);
    font-weight: 700;
}

.stat-card small {
    color: var(--muted);
}

.quick-links {
    display: grid;
    gap: 12px;
}

.quick-link {
    display: block;
    padding: 14px 16px;
    border-radius: 14px;
    background: var(--card-soft);
    border: 1px solid var(--line);
    color: var(--text);
}

.quick-link strong {
    display: block;
    margin-bottom: 4px;
}

.quick-link span {
    color: var(--muted);
    font-size: 0.92rem;
}

.icon-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.icon-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    border: 1px solid var(--line);
    background: #fff;
    color: var(--text);
    font-size: 1rem;
    text-decoration: none;
    transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.icon-link:hover {
    text-decoration: none;
    transform: translateY(-1px);
    border-color: rgba(59, 130, 246, 0.35);
    background: var(--primary-soft);
}

.icon-link-danger {
    color: var(--danger);
    background: #fff5f5;
    border-color: #fecaca;
}

.icon-link-danger:hover {
    border-color: #fca5a5;
    background: #fee2e2;
}

.inline-form {
    display: inline-flex;
    margin: 0;
}

.icon-link::after {
    content: attr(data-tooltip);
    position: absolute;
    left: 50%;
    bottom: calc(100% + 8px);
    transform: translateX(-50%);
    background: #111827;
    color: #fff;
    font-size: 0.76rem;
    font-weight: 700;
    line-height: 1;
    padding: 7px 9px;
    border-radius: 8px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.18);
    transition: opacity 0.15s ease, transform 0.15s ease;
}

.icon-link:hover::after,
.icon-link:focus-visible::after {
    opacity: 1;
    transform: translateX(-50%) translateY(-1px);
}

.section-head {
    display: flex;
    gap: 12px;
    justify-content: space-between;
    align-items: center;
}

.global-search-bar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 14px;
    align-items: end;
}

.global-search-field {
    display: grid;
}

.search-accordion {
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fbfdff;
    overflow: hidden;
}

.search-accordion summary {
    list-style: none;
    cursor: pointer;
    padding: 14px 16px;
    font-weight: 800;
    color: var(--text);
    user-select: none;
}

.search-accordion summary::-webkit-details-marker {
    display: none;
}

.search-accordion summary::after {
    content: '▾';
    float: right;
    color: var(--muted);
}

.search-accordion[open] summary::after {
    content: '▴';
}

.accordion-body {
    padding: 0 16px 16px;
}

.table-wrap {
    width: 100%;
    overflow-x: visible;
    border-radius: 16px;
    border: 1px solid var(--line);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
}

th, td {
    padding: 11px 12px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

thead th {
    background: #f8fbff;
    color: var(--muted);
    font-size: 0.83rem;
    text-transform: uppercase;
    letter-spacing: .05em;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 800;
}

.badge-success { background: #e7f8ed; color: #14683f; }
.badge-muted { background: #eef2f7; color: #5d6b84; }
.badge-info { background: #eaf1ff; color: #1f57cb; }
.muted { color: var(--muted); }

.inline-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
    align-items: center;
}

.participants-help {
    color: var(--muted);
    max-width: 860px;
}

.row-number-badge {
    display: inline-flex;
    min-width: 34px;
    height: 34px;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: var(--primary-soft);
    color: var(--primary-dark);
    font-weight: 800;
}

.participants-table input { min-width: 110px; }

.participant-match {
    margin-top: 8px;
    font-size: 0.82rem;
    line-height: 1.35;
}

.participant-match[data-state="success"] {
    color: var(--success);
    font-weight: 700;
}

.single-column-grid {
    grid-template-columns: 1fr;
}

.details-grid.single-column-grid {
    grid-template-columns: 1fr;
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.detail-box,
.note-box {
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 14px;
    background: var(--card-soft);
}

.detail-box span {
    display: block;
    font-size: 0.84rem;
    color: var(--muted);
    margin-bottom: 5px;
}

.note-box p { margin-top: 8px; }

.auth-shell {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(340px, 460px);
    gap: 22px;
    align-items: stretch;
}

.auth-side {
    padding: 28px;
    border-radius: 20px;
    background: linear-gradient(135deg, #111827 0%, #1e293b 100%);
    color: #eef4ff;
    display: grid;
    gap: 18px;
    box-shadow: var(--shadow);
}

.auth-side .eyebrow {
    color: #93c5fd;
}

.auth-side h1 {
    font-size: clamp(2rem, 3vw, 2.6rem);
    margin-bottom: 10px;
}

.auth-side p {
    color: #d5def0;
}

.auth-highlights {
    display: grid;
    gap: 12px;
}

.auth-point {
    padding: 14px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.auth-point strong {
    display: block;
    margin-bottom: 4px;
}

.auth-point span {
    color: #d5def0;
    font-size: 0.95rem;
}

.auth-note {
    color: var(--muted);
    font-size: 0.95rem;
}

.auth-form-panel {
    padding: 28px;
    align-content: center;
}

.auth-form-panel h2 {
    font-size: 1.75rem;
}

@media (max-width: 1100px) {
    .stats-grid,
    .details-grid,
    .grid.cols-3,
    .dashboard-grid,
    .hero-card,
    .auth-shell {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 960px) {
    .with-sidebar .app-layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: fixed;
        z-index: 30;
        inset: 0 auto 0 0;
        width: 280px;
        transform: translateX(-100%);
        transition: transform 0.22s ease;
    }

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

    .sidebar-backdrop {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(15, 23, 42, 0.36);
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.22s ease;
        z-index: 20;
    }

    body.sidebar-open .sidebar-backdrop {
        opacity: 1;
        pointer-events: auto;
    }

    .toolbar-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .page-grid,
    .grid.cols-2,
    .grid.cols-3,
    .stats-grid,
    .details-grid,
    .dashboard-grid,
    .hero-card,
    .auth-shell {
        grid-template-columns: 1fr;
    }

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

    .table-wrap table {
        min-width: 720px;
    }

    .toolbar,
    .toolbar-right {
        flex-wrap: wrap;
    }
}

@media (max-width: 640px) {
    .workspace,
    .guest-shell {
        padding: 14px;
    }

    .card,
    .hero-card {
        padding: 16px;
        border-radius: 16px;
    }

    .actions-row,
    .section-head,
    .toolbar-right {
        flex-direction: column;
        align-items: stretch;
    }

    .btn { width: 100%; }
    .inline-row { grid-template-columns: 1fr; }
    .user-chip { width: 100%; }
}