:root {
    --op-bg: #0a0a0a;
    --op-panel: #141414;
    --op-panel-2: #1c1c1c;
    --op-border: #2a2a2a;
    --op-text: #ededed;
    --op-text-dim: #9a9a9a;
    --op-accent: #e23744;
    --op-accent-hover: #ff4d5b;
    --op-ok: #2faa5a;
    --op-warn: #d9a441;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    background: var(--op-bg);
    color: var(--op-text);
    font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
    font-size: 15px;
}

a {
    color: inherit;
    text-decoration: none;
}

.op-shell {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}

.op-sidebar {
    background: var(--op-panel);
    border-right: 1px solid var(--op-border);
    padding: 24px 18px;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.op-brand {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.op-brand-mark {
    font-weight: 800;
    font-size: 20px;
    letter-spacing: .5px;
}

.op-brand-sub {
    font-size: 12px;
    color: var(--op-text-dim);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.op-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.op-nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 10px;
    color: var(--op-text-dim);
    font-weight: 500;
    transition: background .15s, color .15s;
}

.op-nav-link:hover {
    background: var(--op-panel-2);
    color: var(--op-text);
}

.op-nav-link.active {
    background: var(--op-accent);
    color: #fff;
}

.op-nav-ico {
    font-size: 16px;
}

.op-user {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
    border-top: 1px solid var(--op-border);
    padding-top: 16px;
}

.op-user-name {
    font-size: 13px;
    color: var(--op-text-dim);
}

.op-logout {
    background: transparent;
    border: 1px solid var(--op-border);
    color: var(--op-text);
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
}

.op-logout:hover {
    border-color: var(--op-accent);
    color: var(--op-accent-hover);
}

.op-main {
    padding: 32px 40px;
    max-width: 1200px;
}

.op-page-head h1 {
    margin: 0 0 4px;
    font-size: 26px;
    font-weight: 700;
}

.op-page-sub {
    margin: 0 0 24px;
    color: var(--op-text-dim);
}

.op-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}

.op-card {
    display: flex;
    flex-direction: column;
    gap: 8px;
    background: var(--op-panel);
    border: 1px solid var(--op-border);
    border-radius: 14px;
    padding: 20px;
    transition: border-color .15s, transform .15s;
}

.op-card:hover {
    border-color: var(--op-accent);
    transform: translateY(-2px);
}

.op-card-ico {
    font-size: 24px;
}

.op-card-title {
    font-weight: 700;
    font-size: 16px;
}

.op-card-desc {
    color: var(--op-text-dim);
    font-size: 13px;
}

.op-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--op-panel);
    border: 1px solid var(--op-border);
    border-radius: 12px;
    overflow: hidden;
}

.op-table th, .op-table td {
    text-align: left;
    padding: 12px 14px;
    border-bottom: 1px solid var(--op-border);
}

.op-table th {
    background: var(--op-panel-2);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .5px;
    color: var(--op-text-dim);
}

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

.op-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
}

.op-badge-ok { background: rgba(47, 170, 90, .18); color: var(--op-ok); }
.op-badge-warn { background: rgba(217, 164, 65, .18); color: var(--op-warn); }
.op-badge-off { background: rgba(154, 154, 154, .18); color: var(--op-text-dim); }

.op-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--op-accent);
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 10px 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background .15s;
}

.op-btn:hover { background: var(--op-accent-hover); }

.op-btn-ghost {
    background: transparent;
    border: 1px solid var(--op-border);
    color: var(--op-text);
}

.op-btn-ghost:hover { border-color: var(--op-accent); color: var(--op-accent-hover); }

.op-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
}

.op-field label {
    font-size: 13px;
    color: var(--op-text-dim);
}

.op-field input, .op-field select, .op-field textarea {
    background: var(--op-panel-2);
    border: 1px solid var(--op-border);
    border-radius: 8px;
    color: var(--op-text);
    padding: 10px 12px;
    font-size: 14px;
}

.op-field input:focus, .op-field select:focus, .op-field textarea:focus {
    outline: none;
    border-color: var(--op-accent);
}

.op-panel {
    background: var(--op-panel);
    border: 1px solid var(--op-border);
    border-radius: 14px;
    padding: 24px;
    margin-bottom: 20px;
}

.op-login {
    max-width: 380px;
    margin: 12vh auto 0;
}

.op-error {
    color: var(--op-accent-hover);
    font-size: 13px;
    margin-top: 8px;
}

.op-link {
    color: var(--op-accent);
    font-weight: 600;
}

.op-link:hover { color: var(--op-accent-hover); }

.op-link.op-danger { color: var(--op-warn); background: none; border: none; cursor: pointer; padding: 0; font: inherit; }
.op-link.op-danger:hover { color: var(--op-accent-hover); }

.op-muted { color: var(--op-text-dim); }

.op-panel-title {
    margin: 0 0 16px;
    font-size: 16px;
    font-weight: 700;
}

.op-form-row {
    display: flex;
    align-items: flex-end;
    gap: 16px;
    flex-wrap: wrap;
}

.op-form-row .op-field { margin-bottom: 0; }

.op-feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}

.op-feature-group {
    border: 1px solid var(--op-border);
    border-radius: 12px;
    padding: 12px 16px;
}

.op-feature-group legend {
    color: var(--op-text-dim);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .5px;
    padding: 0 6px;
}

.op-check {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    font-size: 14px;
    cursor: pointer;
}

.op-check code, .op-table code, .op-page-sub code {
    background: var(--op-panel-2);
    border: 1px solid var(--op-border);
    border-radius: 6px;
    padding: 1px 6px;
    font-size: 12px;
    color: var(--op-text-dim);
}

.op-badge-muted { background: rgba(154, 154, 154, .18); color: var(--op-text-dim); }

.op-select {
    background: var(--op-panel-2);
    border: 1px solid var(--op-border);
    border-radius: 8px;
    color: var(--op-text);
    padding: 8px 10px;
    font-size: 14px;
}

.op-select:focus { outline: none; border-color: var(--op-accent); }