:root {
    --portal-bg: #0f172a;
    --portal-panel: #1e293b;
    --portal-border: #334155;
    --portal-text: #e2e8f0;
    --portal-muted: #94a3b8;
    --portal-accent: #0d9488;
    --portal-accent-hover: #14b8a6;
    --portal-danger: #f87171;
    --portal-radius: 10px;
}

* { box-sizing: border-box; }
body.portal-body {
    margin: 0;
    font-family: "Segoe UI", system-ui, sans-serif;
    background: var(--portal-bg);
    color: var(--portal-text);
    min-height: 100vh;
}
.skip-link {
    position: absolute;
    left: -9999px;
}
.portal-shell {
    display: grid;
    grid-template-columns: 240px 1fr;
    min-height: 100vh;
}
.portal-sidebar {
    background: #020617;
    border-right: 1px solid var(--portal-border);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.portal-brand {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}
.portal-brand strong { display: block; }
.portal-brand span { color: var(--portal-muted); font-size: 0.85rem; }
.portal-nav { display: flex; flex-direction: column; gap: 0.35rem; flex: 1; }
.portal-nav-link {
    color: var(--portal-text);
    text-decoration: none;
    padding: 0.55rem 0.75rem;
    border-radius: 8px;
}
.portal-nav-link:hover,
.portal-nav-link.is-active {
    background: var(--portal-panel);
    color: var(--portal-accent-hover);
}
.portal-sidebar-foot { margin-top: auto; }
.portal-user { color: var(--portal-muted); font-size: 0.85rem; word-break: break-all; }
.portal-main-wrap { display: flex; flex-direction: column; min-width: 0; }
.portal-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--portal-border);
    background: rgba(15, 23, 42, 0.8);
}
.portal-page-title { margin: 0; font-size: 1.25rem; }
.portal-site-link { color: var(--portal-accent-hover); text-decoration: none; }
.portal-main { padding: 1.5rem; }
.portal-panel {
    background: var(--portal-panel);
    border: 1px solid var(--portal-border);
    border-radius: var(--portal-radius);
    padding: 1.25rem;
    margin-bottom: 1rem;
}
.portal-panel h2 { margin-top: 0; font-size: 1.05rem; }
.portal-muted { color: var(--portal-muted); }
.portal-error {
    background: rgba(248, 113, 113, 0.12);
    border: 1px solid rgba(248, 113, 113, 0.35);
    color: #fecaca;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}
.portal-success {
    background: rgba(45, 212, 191, 0.12);
    border: 1px solid rgba(45, 212, 191, 0.35);
    color: #99f6e4;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}
.portal-form label {
    display: block;
    margin: 0.75rem 0 0.35rem;
    font-size: 0.9rem;
}
.portal-form input,
.portal-form select,
.portal-form textarea {
    width: 100%;
    max-width: 520px;
    padding: 0.65rem 0.75rem;
    border-radius: 8px;
    border: 1px solid var(--portal-border);
    background: #0f172a;
    color: var(--portal-text);
    font: inherit;
}
.portal-form textarea { min-height: 140px; resize: vertical; }
.portal-btn {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.65rem 1.1rem;
    border: none;
    border-radius: 8px;
    background: var(--portal-accent);
    color: #fff;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
}
.portal-btn:hover { background: var(--portal-accent-hover); }
.portal-btn-secondary {
    background: transparent;
    border: 1px solid var(--portal-border);
    color: var(--portal-text);
}
.portal-table { width: 100%; border-collapse: collapse; }
.portal-table th,
.portal-table td {
    text-align: left;
    padding: 0.7rem 0.5rem;
    border-bottom: 1px solid var(--portal-border);
    vertical-align: top;
}
.portal-table a { color: var(--portal-accent-hover); }
.portal-badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    background: #334155;
}
.portal-badge--open,
.portal-badge--awaiting_staff { background: #854d0e; }
.portal-badge--awaiting_customer { background: #1d4ed8; }
.portal-badge--closed { background: #334155; color: #94a3b8; }
.portal-thread { display: flex; flex-direction: column; gap: 0.85rem; }
.portal-message {
    border: 1px solid var(--portal-border);
    border-radius: 8px;
    padding: 0.9rem 1rem;
    background: #0f172a;
}
.portal-message--staff { border-color: #0f766e; }
.portal-message-meta {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    color: var(--portal-muted);
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}
.portal-message-body { white-space: pre-wrap; line-height: 1.45; }
.portal-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 1rem; }
.portal-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1rem;
}
.portal-stat {
    background: var(--portal-panel);
    border: 1px solid var(--portal-border);
    border-radius: var(--portal-radius);
    padding: 1rem;
}
.portal-stat strong { display: block; font-size: 1.4rem; }
.portal-stat span { color: var(--portal-muted); font-size: 0.85rem; }
.portal-quota-panel h2 { margin-bottom: 0.85rem; }
.portal-quota {
    display: grid;
    gap: 0.75rem;
}
.portal-quota-track {
    height: 0.7rem;
    border-radius: 999px;
    background: #0f172a;
    overflow: hidden;
    border: 1px solid var(--portal-border);
}
.portal-quota-fill {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: var(--portal-accent);
    transition: width 0.2s ease;
}
.portal-quota--high .portal-quota-fill { background: #f59e0b; }
.portal-quota--full .portal-quota-fill { background: #ef4444; }
.portal-quota-copy {
    display: grid;
    gap: 0.25rem;
}
.portal-quota-copy strong { font-size: 1.05rem; }
.portal-quota-copy span { color: var(--portal-muted); font-size: 0.9rem; }
@media (max-width: 800px) {
    .portal-shell { grid-template-columns: 1fr; }
    .portal-sidebar { border-right: none; border-bottom: 1px solid var(--portal-border); }
}