:root {
    --bg: #070b12;
    --bg-elevated: #0f1623;
    --bg-card: #121a28;
    --border: rgba(148, 163, 184, 0.12);
    --text: #e8edf5;
    --text-muted: #94a3b8;
    --accent: #38bdf8;
    --accent-glow: rgba(56, 189, 248, 0.35);
    --danger: #f87171;
    --success: #4ade80;
    --radius: 16px;
    --radius-sm: 10px;
    --font: "Instrument Sans", system-ui, sans-serif;
    --mono: "JetBrains Mono", ui-monospace, monospace;
    --shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
}

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

html { scroll-behavior: smooth; }

body {
    margin: 0;
    min-height: 100dvh;
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(56, 189, 248, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 100% 50%, rgba(99, 102, 241, 0.08), transparent),
        radial-gradient(ellipse 50% 30% at 0% 80%, rgba(34, 211, 238, 0.06), transparent);
    pointer-events: none;
    z-index: 0;
}

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

/* —— Public hub —— */
.hub-page {
    position: relative;
    z-index: 1;
    max-width: 1280px;
    margin: 0 auto;
    padding: clamp(1.25rem, 4vw, 2.5rem);
    padding-bottom: 3rem;
}

.hub-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.hub-brand {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.hub-site-logo,
.hub-login-logo {
    max-height: 52px;
    max-width: 160px;
    object-fit: contain;
}

.hub-login-logo {
    display: block;
    margin: 0 auto 1rem;
}

.hub-brand h1 {
    margin: 0 0 0.35rem;
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, #fff 0%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hub-brand p {
    margin: 0;
    color: var(--text-muted);
    font-size: 1.05rem;
    max-width: 36rem;
}

.hub-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.hub-badge {
    font-family: var(--mono);
    font-size: 0.72rem;
    padding: 0.35rem 0.65rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    color: var(--text-muted);
}

.hub-admin-link {
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    color: var(--text-muted);
    text-decoration: none;
    transition: border-color 0.2s, color 0.2s;
}

.hub-admin-link:hover {
    border-color: var(--accent);
    color: var(--accent);
    text-decoration: none;
}

.hub-logout-form { margin: 0; }

.hub-logout-form button {
    font: inherit;
    cursor: pointer;
}

.hub-badge--user {
    text-transform: capitalize;
}

body.hub-branded::before {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hub-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
    gap: 1.25rem;
}

.hub-card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-height: 200px;
    padding: 1.35rem 1.35rem 1.1rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--bg-card);
    cursor: pointer;
    transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
    overflow: hidden;
    text-align: left;
    color: inherit;
    font: inherit;
    width: 100%;
}

.hub-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--card-accent, var(--accent));
    opacity: 0.9;
}

.hub-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 100% 0%, var(--card-glow, transparent), transparent 55%);
    opacity: 0;
    transition: opacity 0.25s;
    pointer-events: none;
}

.hub-card:hover,
.hub-card:focus-visible {
    transform: translateY(-3px);
    border-color: rgba(148, 163, 184, 0.28);
    box-shadow: var(--shadow), 0 0 0 1px rgba(255, 255, 255, 0.04);
    outline: none;
}

.hub-card:hover::after { opacity: 1; }

.hub-card-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.85rem;
}

.hub-card-icon {
    width: 2.75rem;
    height: 2.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    flex-shrink: 0;
}

.hub-card-info {
    flex-shrink: 0;
    width: 2.25rem;
    height: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    transition: background 0.15s, color 0.15s;
}

.hub-card-info:hover {
    background: rgba(56, 189, 248, 0.15);
    color: var(--accent);
}

.hub-card h2 {
    margin: 0 0 0.5rem;
    font-size: 1.2rem;
    font-weight: 650;
    letter-spacing: -0.02em;
}

.hub-card-desc {
    margin: 0;
    flex: 1;
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.45;
}

.hub-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 1rem;
    padding-top: 0.85rem;
    border-top: 1px solid var(--border);
    gap: 0.5rem;
}

.hub-card-stack {
    font-family: var(--mono);
    font-size: 0.68rem;
    color: var(--text-muted);
    opacity: 0.85;
}

.hub-card-open {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--card-accent, var(--accent));
}

.hub-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
    border: 1px dashed var(--border);
    border-radius: var(--radius);
}

/* Modal */
.hub-modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: rgba(4, 8, 16, 0.75);
    backdrop-filter: blur(8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s, visibility 0.25s;
}

.hub-modal-backdrop.is-open {
    opacity: 1;
    visibility: visible;
}

.hub-modal {
    width: min(100%, 520px);
    max-height: min(90dvh, 640px);
    overflow: auto;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transform: scale(0.96) translateY(8px);
    transition: transform 0.25s;
}

.hub-modal-backdrop.is-open .hub-modal {
    transform: scale(1) translateY(0);
}

.hub-modal-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem 1.5rem 0;
}

.hub-modal-icon {
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    flex-shrink: 0;
}

.hub-modal-title-wrap { flex: 1; min-width: 0; }

.hub-modal-title-wrap h2 {
    margin: 0 0 0.25rem;
    font-size: 1.35rem;
    font-weight: 700;
}

.hub-modal-stack {
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.hub-modal-close {
    flex-shrink: 0;
    width: 2.25rem;
    height: 2.25rem;
    border: none;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-muted);
    font-size: 1.25rem;
    cursor: pointer;
    line-height: 1;
}

.hub-modal-close:hover { background: rgba(248, 113, 113, 0.15); color: var(--danger); }

.hub-modal-body {
    padding: 1.25rem 1.5rem;
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    white-space: pre-wrap;
}

.hub-modal-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    padding: 0 1.5rem 1.5rem;
}

.hub-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.65rem 1.15rem;
    font-family: var(--font);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.15s, opacity 0.15s;
}

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

.hub-btn-primary {
    background: linear-gradient(135deg, #38bdf8, #6366f1);
    color: #0b1220;
}

.hub-btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text);
    border: 1px solid var(--border);
}

.hub-btn-secondary:disabled,
.hub-btn-secondary.is-disabled {
    opacity: 0.45;
    cursor: not-allowed;
    pointer-events: none;
}

/* —— Admin —— */
.admin-page {
    position: relative;
    z-index: 1;
    max-width: 960px;
    margin: 0 auto;
    padding: clamp(1.25rem, 4vw, 2rem);
}

.admin-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.75rem;
}

.admin-header h1 {
    margin: 0;
    font-size: 1.5rem;
}

.admin-nav {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.admin-flash {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.admin-flash--success {
    background: rgba(74, 222, 128, 0.12);
    border: 1px solid rgba(74, 222, 128, 0.3);
    color: var(--success);
}

.admin-flash--error {
    background: rgba(248, 113, 113, 0.12);
    border: 1px solid rgba(248, 113, 113, 0.3);
    color: var(--danger);
}

.admin-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-card);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

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

.admin-table th {
    font-family: var(--mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    background: var(--bg-elevated);
}

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

.admin-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.admin-form {
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
    max-width: 640px;
}

.admin-field label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.35rem;
}

.admin-field input,
.admin-field textarea,
.admin-field select {
    width: 100%;
    padding: 0.65rem 0.85rem;
    font-family: var(--font);
    font-size: 0.95rem;
    color: var(--text);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.admin-field textarea { min-height: 100px; resize: vertical; }

.admin-field input:focus,
.admin-field textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

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

.admin-check input { width: auto; }

.admin-login-box {
    max-width: 400px;
    margin: 4rem auto;
    padding: 2rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-card);
}

.admin-login-box h1 {
    margin: 0 0 0.5rem;
    font-size: 1.35rem;
}

.admin-login-box p {
    margin: 0 0 1.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.admin-btn-row {
    display: flex;
    gap: 0.65rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.admin-btn-danger {
    background: rgba(248, 113, 113, 0.15);
    color: var(--danger);
    border: 1px solid rgba(248, 113, 113, 0.35);
}

.status-pill {
    display: inline-block;
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    border-radius: 999px;
}

.status-pill--on {
    background: rgba(74, 222, 128, 0.15);
    color: var(--success);
}

.status-pill--off {
    background: rgba(148, 163, 184, 0.15);
    color: var(--text-muted);
}

.admin-page--wide { max-width: 1100px; }

.admin-subnav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.admin-subnav-link {
    padding: 0.45rem 0.9rem;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    color: var(--text-muted);
    text-decoration: none;
}

.admin-subnav-link:hover,
.admin-subnav-link.is-active {
    border-color: var(--accent);
    color: var(--accent);
    text-decoration: none;
}

.admin-subnav-link.is-active {
    background: rgba(56, 189, 248, 0.1);
}

.admin-hint {
    margin: 0.4rem 0 0;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.admin-hint--ok { color: var(--success); }
.admin-hint--warn { color: #fbbf24; }

.admin-input-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.admin-input-row input { flex: 1; min-width: 200px; }

.admin-field select {
    width: 100%;
    padding: 0.65rem 0.85rem;
    font-family: var(--font);
    font-size: 0.95rem;
    color: var(--text);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.admin-app-picker {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem 1.15rem;
    margin: 0;
}

.admin-app-picker legend {
    font-weight: 600;
    padding: 0 0.25rem;
}

.admin-app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.admin-app-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.65rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg);
    cursor: pointer;
    font-size: 0.85rem;
}

.admin-app-check input { width: auto; flex-shrink: 0; }

.admin-preview {
    margin-bottom: 0.65rem;
}

.admin-preview img {
    max-height: 64px;
    max-width: 200px;
    object-fit: contain;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.admin-preview--wide img {
    max-height: 120px;
    max-width: 100%;
}

@media (max-width: 640px) {
    .admin-table th:nth-child(4),
    .admin-table td:nth-child(4) { display: none; }
}