:root {
    --bg: #14171d;
    --bg-elev: #1c2029;
    --bg-card: #232730;
    --bg-input: #14171d;
    --border: #2c313b;
    --border-strong: #3a3f4a;
    --text: #e8ebf0;
    --muted: #8b93a1;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --danger: #b91c1c;
    --danger-hover: #dc2626;
    --ok: #16a34a;
    --warn: #f59e0b;
    --radius: 10px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 15px;
    line-height: 1.5;
}

/* ---------- Header ---------- */
header {
    padding: 14px 24px;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand .logo {
    font-size: 1.6em;
    color: var(--accent);
    line-height: 1;
}
header h1 { margin: 0; font-size: 1.25em; }
header .meta { color: var(--muted); font-size: 0.82em; }

/* ---------- Tabs ---------- */
.tabs {
    display: flex;
    gap: 4px;
    padding: 0 16px;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
}
.tab {
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--muted);
    padding: 12px 16px;
    cursor: pointer;
    font: inherit;
    white-space: nowrap;
}
.tab:hover { color: var(--text); }
.tab.active {
    color: var(--text);
    border-bottom-color: var(--accent);
}

/* ---------- Layout ---------- */
main {
    max-width: 960px;
    margin: 20px auto;
    padding: 0 16px 48px;
}
.panel { display: none; flex-direction: column; gap: 16px; }
.panel.active { display: flex; }

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
}
.card h2 { margin: 0 0 14px; font-size: 1.05em; }
.card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}
.card-head h2 { margin: 0; }
.card-actions { margin-top: 16px; display: flex; gap: 10px; }

/* ---------- Forms ---------- */
.grid-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 14px;
}
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; }
label { display: flex; flex-direction: column; gap: 5px; font-size: 0.88em; color: var(--muted); }
label.check { flex-direction: row; align-items: center; gap: 8px; color: var(--text); }
label.label-range { gap: 6px; }
.label-caption {
    display: block;
    font-size: 0.88em;
    color: var(--muted);
    line-height: 1.3;
    white-space: nowrap;
}
.label-caption > span {
    color: var(--text);
    font-weight: 600;
}

input[type="text"], input[type="number"], input[type="password"], select {
    background: var(--bg-input);
    border: 1px solid var(--border-strong);
    color: var(--text);
    padding: 8px 10px;
    border-radius: 6px;
    font: inherit;
    width: 100%;
}
input:focus, select:focus { border-color: var(--accent); outline: none; }
input[type="color"] {
    width: 48px; height: 34px; padding: 2px;
    background: var(--bg-input); border: 1px solid var(--border-strong);
    border-radius: 6px; cursor: pointer;
}
input[type="range"] { width: 100%; accent-color: var(--accent); }
input[type="file"] { font-size: 0.85em; color: var(--muted); }

/* ---------- Buttons ---------- */
button {
    background: var(--bg-elev);
    color: var(--text);
    border: 1px solid var(--border-strong);
    padding: 8px 14px;
    border-radius: 6px;
    cursor: pointer;
    font: inherit;
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.primary:hover { background: var(--accent-hover); }
button.del { background: var(--danger); border-color: var(--danger); color: #fff; }
button.del:hover { background: var(--danger-hover); }
button.ghost { background: transparent; }
button.icon-only { padding: 6px 9px; line-height: 1; }

/* ---------- Hints ---------- */
.hint { color: var(--muted); font-size: 0.85em; margin: 0 0 12px; }
.warn { color: var(--warn); font-size: 0.85em; margin: 0 0 12px; }
.empty { color: var(--muted); text-align: center; padding: 24px 0; }

/* ---------- Icons grid ---------- */
.icon-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
    gap: 10px;
    margin-top: 14px;
}
.icon-tile {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px;
    text-align: center;
    position: relative;
}
.icon-tile img { width: 100%; height: 64px; object-fit: contain; }
.icon-tile span { display: block; font-size: 0.72em; color: var(--muted); word-break: break-all; }
.icon-tile .del { position: absolute; top: 4px; right: 4px; }

/* ---------- Buttons list ---------- */
.buttons-list { list-style: none; margin: 0; padding: 0; }
.buttons-list li {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 12px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.buttons-list .handle { cursor: grab; font-size: 1.4em; color: var(--muted); user-select: none; }
.buttons-list .btn-icon { width: 38px; height: 38px; object-fit: contain; }
.buttons-list .btn-info { flex: 1; display: flex; flex-direction: column; }
.buttons-list .btn-info small { color: var(--muted); font-size: 0.8em; }
.buttons-list .swatch { width: 18px; height: 18px; border-radius: 50%; border: 1px solid var(--border-strong); }
.buttons-list li.sortable-ghost { opacity: 0.4; }
.buttons-list li.sortable-chosen { border-color: var(--accent); }

/* ---------- Appearance ---------- */
.subhead {
    font-size: 0.95rem;
    font-weight: 600;
    margin: 0 0 12px;
    color: var(--text);
}
.section-divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 20px 0;
}
.card-actions.compact { margin-top: 10px; }

.appearance-bg .bg-gradient-row,
.appearance-bg .bg-image-row { display: none; }
.appearance-bg.mode-gradient .bg-gradient-row { display: flex; }
.appearance-bg.mode-solid .bg-solid-row { display: flex; }
.appearance-bg.mode-image .bg-image-row { display: flex; }

.feedback-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.feedback-section {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px 16px;
}
.feedback-section-title {
    margin: 0 0 12px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
}
.feedback-section-grid {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 20px;
    align-items: center;
}
.feedback-section-form {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    margin: 0;
}
.feedback-section-preview {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 88px;
}

/* ---------- Feedback preview ---------- */
.preview-row { display: flex; gap: 24px; margin-top: 16px; flex-wrap: wrap; }
.preview-dot {
    width: 72px; height: 72px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    background: #7b007b; color: #fff; font-weight: 600; font-size: 0.85em;
}

/* ---------- Network ---------- */
.net-status { font-size: 0.9em; }
.net-device {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 12px;
    margin-bottom: 8px;
}
.net-device .name { font-weight: 600; }
.net-device .detail { color: var(--muted); font-size: 0.85em; }
.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 0.75em; }
.badge.up { background: rgba(22,163,74,0.2); color: #4ade80; }
.badge.down { background: rgba(185,28,28,0.2); color: #f87171; }
.static-only { display: none; }
.grid-form.show-static .static-only { display: flex; }

/* ---------- Update ---------- */
.update-layout {
    display: grid;
    grid-template-columns: minmax(220px, 280px) 1fr;
    gap: 16px;
    align-items: start;
}
.update-main { display: flex; flex-direction: column; gap: 16px; }
.version-sidebar { margin: 0; position: sticky; top: 12px; }
.version-sidebar .card-head { margin-bottom: 8px; }
.version-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.version-list .empty { color: var(--muted); font-size: 0.88em; padding: 8px 0; }
.version-item {
    position: relative;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 36px 10px 12px;
}
.version-item.is-current { border-color: var(--accent); }
.version-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.version-meta { display: block; color: var(--muted); font-size: 0.78em; margin-top: 4px; word-break: break-all; }
.version-del { position: absolute; top: 8px; right: 8px; }
.badge.current { background: rgba(59,130,246,0.2); color: #93c5fd; }
.badge.prev { background: rgba(245,158,11,0.2); color: #fcd34d; }
@media (max-width: 720px) {
    .update-layout { grid-template-columns: 1fr; }
    .version-sidebar { position: static; }
    .feedback-section-grid { grid-template-columns: 1fr; }
    .feedback-section-preview { min-width: 0; padding-top: 4px; }
    .feedback-section-form { grid-template-columns: 1fr; }
}

.kv { display: flex; flex-direction: column; gap: 8px; }
.kv > div { display: flex; gap: 12px; }
.kv span { color: var(--muted); min-width: 80px; }
.kv code { word-break: break-all; }
.update-status {
    margin-top: 14px;
    padding: 10px 12px;
    border-radius: 8px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    font-size: 0.88em;
}
.update-status.ok { border-color: var(--ok); }
.update-status.fail { border-color: var(--danger); }
.update-status.busy { border-color: var(--warn); }

/* ---------- System ---------- */
.sys-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
}
.sys-tile {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.sys-tile span { color: var(--muted); font-size: 0.82em; }
.sys-tile strong { font-size: 1.15em; }
.sys-tile small { color: var(--muted); font-size: 0.78em; }
.sys-clock { margin-bottom: 12px; font-size: 0.95em; }
.access-status { margin-bottom: 14px; }
.access-grid { display: flex; flex-direction: column; gap: 12px; }
.access-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}
.access-row span {
    color: var(--muted);
    min-width: 150px;
}
.log-wrap { overflow-x: auto; margin-top: 8px; }
.req-log {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82em;
}
.req-log th, .req-log td {
    padding: 7px 10px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    white-space: nowrap;
}
.req-log th { color: var(--muted); font-weight: 500; }
.req-log .log-path { max-width: 280px; overflow: hidden; text-overflow: ellipsis; }
.req-log .log-err { color: #f87171; }
.req-log .log-ok { color: #4ade80; }
.req-log .log-wait { color: #fcd34d; }
.req-log .empty-cell { color: var(--muted); text-align: center; }

/* ---------- Dialog ---------- */
dialog {
    background: var(--bg-card);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    color: var(--text);
    padding: 22px;
    min-width: min(96vw, 760px);
}
dialog::backdrop { background: rgba(0,0,0,0.6); }
dialog form { display: flex; flex-direction: column; gap: 10px; }
dialog h3 { margin: 0 0 6px; }
dialog menu { display: flex; justify-content: flex-end; gap: 8px; padding: 0; margin: 14px 0 0; }

.response-check-block { margin-top: 6px; }
.latch-reset-block { margin-top: 8px; }
.latch-reset-fields { display: none; margin-top: 8px; gap: 8px; flex-direction: column; }
.latch-reset-fields.show { display: flex; }
.response-check-advanced { display: none; margin-top: 10px; gap: 10px; flex-direction: column; }
.response-check-advanced.show { display: flex; }
.response-rules-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 4px;
}
.response-rule-row {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 1fr 0.9fr 1.2fr auto;
    gap: 6px;
    margin-bottom: 6px;
}
.response-rule-row input,
.response-rule-row select {
    width: 100%;
    min-width: 0;
}
.response-check-poll { margin-top: 4px; }
@media (max-width: 720px) {
    .response-rule-row {
        grid-template-columns: 1fr 1fr;
    }
    .response-rule-row .rc-del { grid-column: 2; }
}

/* ---------- Toast ---------- */
.toast {
    position: fixed; bottom: 24px; right: 24px;
    background: var(--accent); color: #fff;
    padding: 12px 18px; border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
    z-index: 9999;
}
.toast.error { background: var(--danger); }

/* ---------- Login ---------- */
.login-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f1115 0%, #1f2330 100%);
}
.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 30px 34px;
    width: 330px;
    box-shadow: 0 12px 36px rgba(0,0,0,0.45);
}
.login-card h1 { margin: 0 0 4px; font-size: 1.5em; }
.login-card .muted { margin: 0 0 22px; color: var(--muted); font-size: 0.9em; }
.login-card form { display: flex; flex-direction: column; gap: 16px; }
.login-card .error {
    background: rgba(185,28,28,0.18);
    border: 1px solid var(--danger);
    color: #fca5a5;
    padding: 9px 12px;
    border-radius: 6px;
    font-size: 0.9em;
}
.login-card button.primary { width: 100%; padding: 11px; font-size: 1em; }