:root {
  --bg: #0a0e13;
  --panel: #10161f;
  --panel-alt: #161e2a;
  --border: #232e3d;
  --text: #dde6f0;
  --text-muted: #7688a0;
  --accent: #4fd6c4;
  --accent-dim: #2c8478;
  --warn: #e8a33d;
  --danger: #e8637a;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  --font-body: 'Inter', -apple-system, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  height: 100vh;
  overflow: hidden;
  background-image:
    linear-gradient(rgba(79,214,196,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,214,196,0.025) 1px, transparent 1px);
  background-size: 28px 28px;
}

/* ---------- Topbar ---------- */
.topbar {
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}
.topbar-left { display: flex; align-items: center; gap: 10px; }
.dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.35} }
.brand { font-family: var(--font-mono); font-weight: 700; letter-spacing: 0.5px; }
.brand-accent { color: var(--accent); }
.brand-sub { color: var(--text-muted); font-size: 12px; margin-left: 6px; font-family: var(--font-mono); }
.topbar-right { display: flex; align-items: center; gap: 10px; }
.badge {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--warn);
  border: 1px solid var(--warn);
  padding: 3px 8px;
  border-radius: 3px;
}
.badge.ok { color: var(--accent); border-color: var(--accent); }

/* ---------- Layout ---------- */
.layout {
  display: grid;
  grid-template-columns: 260px 1fr 340px;
  gap: 12px;
  height: calc(100vh - 52px);
  padding: 12px;
}
.col { display: flex; flex-direction: column; gap: 12px; min-height: 0; }
.col-left, .col-right { min-height: 0; }
.col-center { min-height: 0; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.panel-flexgrow { flex: 1; min-height: 0; }

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.panel-head h2 {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- Session list ---------- */
.session-list { overflow-y: auto; flex: 1; display: flex; flex-direction: column; gap: 4px; }
.session-item {
  padding: 8px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text);
  border: 1px solid transparent;
  display: flex;
  justify-content: space-between;
  gap: 6px;
}
.session-item:hover { background: var(--panel-alt); }
.session-item.active { border-color: var(--accent-dim); background: rgba(79,214,196,0.08); }
.session-item .del { color: var(--text-muted); opacity: 0; }
.session-item:hover .del { opacity: 1; }
.session-item .del:hover { color: var(--danger); }

/* ---------- Controls ---------- */
.control-group { margin-bottom: 10px; display: flex; flex-direction: column; gap: 4px; }
.control-group label { font-size: 11px; color: var(--text-muted); font-family: var(--font-mono); }
select, input, textarea {
  background: var(--panel-alt);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 4px;
  padding: 7px 8px;
  font-family: var(--font-body);
  font-size: 13px;
  width: 100%;
}
textarea { resize: vertical; }
select:focus, input:focus, textarea:focus { outline: 1px solid var(--accent); border-color: var(--accent); }

.vps-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-bottom: 8px; }

/* ---------- Buttons ---------- */
.btn-primary, .btn-secondary, .btn-ghost, .btn-icon {
  font-family: var(--font-mono);
  font-size: 12px;
  cursor: pointer;
  border-radius: 4px;
  border: 1px solid transparent;
  padding: 8px 12px;
}
.btn-primary { background: var(--accent); color: #06201c; font-weight: 700; border: none; }
.btn-primary:hover { background: #6fe4d4; }
.btn-secondary { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost { background: none; border: none; color: var(--text-muted); }
.btn-ghost:hover { color: var(--text); }
.btn-icon { background: var(--panel-alt); border: 1px solid var(--border); color: var(--accent); width: 24px; height: 24px; padding: 0; line-height: 1; }
.btn-block { width: 100%; margin-top: 4px; }

/* ---------- Chat ---------- */
.chat-panel { flex: 1; }
.chat-messages {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 4px 2px;
}
.chat-messages-mini { font-size: 13px; }
.empty-state { color: var(--text-muted); font-size: 13px; margin: auto; text-align: center; font-family: var(--font-mono); }

.msg { max-width: 88%; padding: 9px 12px; border-radius: 8px; font-size: 13.5px; line-height: 1.5; white-space: pre-wrap; }
.msg.user { align-self: flex-end; background: var(--accent-dim); color: #eafffb; border-bottom-right-radius: 2px; }
.msg.assistant { align-self: flex-start; background: var(--panel-alt); border: 1px solid var(--border); border-bottom-left-radius: 2px; }
.msg code, .msg pre { font-family: var(--font-mono); background: rgba(0,0,0,0.35); padding: 1px 4px; border-radius: 3px; }
.msg.error { align-self: center; color: var(--danger); font-family: var(--font-mono); font-size: 12px; }

.chat-input-row { display: flex; gap: 8px; margin-top: 8px; }
.chat-input-row textarea { flex: 1; }
.chat-input-row input { flex: 1; font-family: var(--font-mono); }

/* ---------- Modal ---------- */
.modal {
  position: fixed; inset: 0; background: rgba(4,6,9,0.7);
  display: flex; align-items: center; justify-content: center; z-index: 50;
}
.modal.hidden { display: none; }
.modal-box {
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px;
  padding: 20px; width: 380px; max-width: 90vw;
}
.modal-wide { width: 620px; }
.modal-box h3 { margin-top: 0; font-family: var(--font-mono); font-size: 15px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }
.hint { font-size: 11px; color: var(--text-muted); }

/* ---------- Plugin table ---------- */
.plugin-form { display: grid; grid-template-columns: 1fr 1fr 1fr auto; gap: 6px; margin-bottom: 12px; }
.plugin-form textarea { grid-column: 1 / -1; }
.plugin-table { max-height: 320px; overflow-y: auto; display: flex; flex-direction: column; gap: 6px; }
.plugin-row {
  display: flex; align-items: center; gap: 8px;
  border: 1px solid var(--border); border-radius: 4px; padding: 8px;
  font-size: 12.5px;
}
.plugin-row .tag {
  font-family: var(--font-mono); font-size: 10px; text-transform: uppercase;
  border: 1px solid var(--accent-dim); color: var(--accent); border-radius: 3px; padding: 2px 5px;
}
.plugin-row .name { flex: 1; }
.plugin-row .status-pending { color: var(--warn); font-family: var(--font-mono); font-size: 11px; }
.plugin-row .del { color: var(--text-muted); cursor: pointer; }
.plugin-row .del:hover { color: var(--danger); }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-track { background: transparent; }