:root {
  --bg: #0f1b2d;
  --bg2: #131f35;
  --panel: #16243c;
  --panel2: #1b2c48;
  --border: #2a3c55;
  --text: #e0e8f0;
  --muted: #8ba0b8;
  --accent: #4fc3f7;
  --accent2: #7ee787;
  --danger: #ff7b72;
  --warn: #ffb300;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: "DejaVu Sans", "Segoe UI", system-ui, sans-serif;
  background: radial-gradient(circle at 20% 0%, #16263f 0%, var(--bg) 55%);
  color: var(--text);
  font-size: 15px;
}

/* ── логин ── */
.login-body { display: flex; align-items: center; justify-content: center; }
.login-card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 16px; padding: 40px; width: 360px;
  box-shadow: 0 20px 60px rgba(0,0,0,.45);
}
.login-logo { font-size: 48px; text-align: center; }
.login-card h1 { text-align: center; font-size: 28px; margin: 8px 0 2px; }
.login-sub { text-align: center; color: var(--muted); margin-bottom: 26px; font-size: 13px; }
.login-card label { display: block; margin: 14px 0 6px; color: var(--muted); font-size: 13px; }
.login-card input {
  width: 100%; padding: 11px 13px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg);
  color: var(--text); font-size: 15px; outline: none;
}
.login-card input:focus { border-color: var(--accent); }
.login-card button {
  width: 100%; margin-top: 20px; padding: 12px; border: none; border-radius: 8px;
  background: var(--accent); color: #06263a; font-weight: 700; font-size: 15px; cursor: pointer;
}
.login-card button:disabled { opacity: .6; cursor: default; }
.login-error { color: var(--danger); text-align: center; margin-top: 14px; min-height: 18px; font-size: 13px; }

/* ── верхняя панель ── */
.topbar {
  display: flex; align-items: center; gap: 24px;
  padding: 12px 22px; background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.brand { font-size: 18px; font-weight: 700; }
.brand-name {}
.brand-sub { color: var(--muted); font-size: 13px; font-weight: 400; margin-left: 4px; }
.tabs { display: flex; gap: 6px; flex: 1; }
.tab {
  padding: 8px 16px; border-radius: 8px; border: 1px solid transparent;
  background: transparent; color: var(--muted); font-size: 14px; cursor: pointer;
}
.tab:hover { color: var(--text); border-color: var(--border); }
.tab.active { background: var(--panel2); color: var(--text); border-color: var(--border); }
.userbox { display: flex; align-items: center; gap: 10px; }
.user-name { font-weight: 600; }
.user-role { color: var(--muted); font-size: 12px; background: var(--panel2); padding: 3px 8px; border-radius: 20px; }
.logout { padding: 6px 12px; border-radius: 8px; border: 1px solid var(--border); background: transparent; color: var(--muted); cursor: pointer; }
.logout:hover { color: var(--danger); border-color: var(--danger); }

main { padding: 22px; max-width: 1200px; margin: 0 auto; }
.hidden { display: none; }

/* ── карточки ── */
.grid-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; margin-bottom: 16px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 18px; }
.card.grow { flex: 1; }
.card-label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .5px; }
.card-value { font-size: 34px; font-weight: 700; margin: 6px 0 2px; }
.card-sub { color: var(--muted); font-size: 13px; }
.two-col { display: flex; gap: 14px; flex-wrap: wrap; }
.two-col > .card { min-width: 300px; }

.tbl { width: 100%; border-collapse: collapse; margin-top: 10px; }
.tbl th, .tbl td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--border); font-size: 13px; }
.tbl th { color: var(--muted); font-weight: 500; }
.kv { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--border); }
.kv span { color: var(--muted); }

/* ── файлы ── */
.files-layout { display: flex; gap: 16px; min-height: 70vh; }
.file-roots { width: 220px; flex-shrink: 0; }
.root-btn { display: block; width: 100%; text-align: left; padding: 10px 14px; margin-bottom: 6px;
  border-radius: 8px; border: 1px solid var(--border); background: var(--panel); color: var(--text); cursor: pointer; }
.root-btn.active { border-color: var(--accent); background: var(--panel2); }
.file-main { flex: 1; display: flex; flex-direction: column; gap: 12px; }
.crumbs { color: var(--muted); font-size: 13px; }
.crumbs a { color: var(--accent); cursor: pointer; text-decoration: none; }
.file-list { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 8px; overflow: auto; max-height: 45vh; }
.file-row { display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 8px; cursor: pointer; }
.file-row:hover { background: var(--panel2); }
.file-ico { width: 22px; text-align: center; }
.file-name { flex: 1; word-break: break-all; }
.file-size { color: var(--muted); font-size: 12px; }
.file-dl { color: var(--accent); text-decoration: none; font-size: 13px; padding: 4px 8px; border-radius: 6px; border: 1px solid var(--border); }
.file-dl:hover { border-color: var(--accent); }
.preview { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 16px; overflow: auto; max-height: 40vh; display: none; white-space: pre-wrap; font-size: 14px; line-height: 1.55; }
.preview img, .preview object { max-width: 100%; border-radius: 8px; }
.preview pre { font-family: monospace; }

/* ── тулбар файлов ── */
.file-toolbar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.file-toolbar .crumbs { flex: 1; min-width: 120px; }
.file-actions { display: flex; gap: 8px; align-items: center; }
.file-actions input, .file-actions select {
  padding: 8px 10px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--panel); color: var(--text); font-size: 13px; outline: none;
}
.file-actions input { width: 180px; }
.file-actions input:focus, .file-actions select:focus { border-color: var(--accent); }
.file-actions button {
  padding: 8px 12px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--panel); color: var(--text); cursor: pointer; font-size: 13px;
}
.file-actions button:hover { border-color: var(--accent); }
.file-actions button:disabled { opacity: .45; cursor: default; }

.file-row { position: relative; }
.file-row .row-actions { display: none; gap: 4px; margin-left: 8px; }
.file-row:hover .row-actions { display: flex; }
.row-actions button {
  padding: 3px 8px; border-radius: 6px; border: 1px solid var(--border);
  background: transparent; color: var(--muted); cursor: pointer; font-size: 12px;
}
.row-actions button:hover { color: var(--text); border-color: var(--accent); }
.row-actions button.del:hover { color: var(--danger); border-color: var(--danger); }

.search-results { background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 8px; overflow: auto; max-height: 45vh; display: none; }
.search-results .search-info { color: var(--muted); font-size: 13px; padding: 6px 10px; }
.search-results .file-row { cursor: pointer; }
.search-results .file-path { color: var(--muted); font-size: 12px; margin-left: auto; }

/* ── график телеметрии ── */
.chart-card { margin-bottom: 16px; }
.chart-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.chart-legend { color: var(--muted); font-size: 12px; display: flex; align-items: center; gap: 8px; }
.chart-legend .dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; margin-right: 3px; }
.chart-legend .cpu-dot { background: var(--accent); }
.chart-legend .ram-dot { background: var(--accent2); }
#hist-chart { width: 100%; height: 170px; display: block; }

.file-list.drag-over { border-color: var(--accent); background: var(--panel2); }
#panel-files.drag-over { cursor: copy; }

/* ── галерея картинок ── */
.gallery { display: none; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; }
.gallery-item { position: relative; border-radius: 10px; overflow: hidden; background: var(--panel); border: 1px solid var(--border); cursor: pointer; }
.gallery-item img { width: 100%; height: 120px; object-fit: cover; display: block; }
.gallery-name { display: block; padding: 4px 8px; font-size: 11px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.gallery-item:hover { border-color: var(--accent); }

.lightbox { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.85); z-index: 1000; align-items: center; justify-content: center; }
.lightbox.open { display: flex; }
.lightbox img { max-width: 92vw; max-height: 90vh; border-radius: 8px; }
.lightbox-close { position: absolute; top: 18px; right: 24px; font-size: 30px; color: #fff; cursor: pointer; }

/* ── чат ── */
.chat-panel { display: flex; flex-direction: column; height: calc(100vh - 130px); gap: 14px; }
.chat-panel.hidden { display: none; }
.chat-topbar { display: flex; align-items: center; justify-content: space-between; }
.chat-title { font-weight: 600; }
.chat-top-actions button {
  padding: 6px 12px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--panel); color: var(--muted); cursor: pointer; font-size: 13px;
}
.chat-top-actions button:hover { color: var(--danger); border-color: var(--danger); }
.chat-messages { flex: 1; overflow: auto; display: flex; flex-direction: column; gap: 12px; padding-right: 6px; }
.msg { max-width: 78%; padding: 12px 15px; border-radius: 14px; line-height: 1.5; white-space: pre-wrap; word-break: break-word; }
.msg.user { align-self: flex-end; background: var(--accent); color: #06263a; border-bottom-right-radius: 4px; }
.msg.ai { align-self: flex-start; background: var(--panel); border: 1px solid var(--border); border-bottom-left-radius: 4px; white-space: normal; }
.msg.ai h2, .msg.ai h3, .msg.ai h4 { margin: 8px 0 4px; line-height: 1.3; }
.msg.ai h2 { font-size: 18px; } .msg.ai h3 { font-size: 16px; } .msg.ai h4 { font-size: 14px; }
.msg.ai code { background: var(--panel2); padding: 1px 5px; border-radius: 4px; font-family: monospace; font-size: 13px; }
.msg.ai pre { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 10px; overflow-x: auto; margin: 8px 0; white-space: pre; }
.msg.ai pre code { background: transparent; padding: 0; }
.msg.ai a { color: var(--accent); }
.msg.ai.error { border-color: var(--danger); color: var(--danger); }
.msg.cursor::after { content: '▍'; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.chat-inputbar { display: flex; gap: 10px; }
.chat-inputbar textarea {
  flex: 1; resize: none; padding: 12px 14px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--panel); color: var(--text);
  font-family: inherit; font-size: 15px; outline: none; max-height: 160px;
}
.chat-inputbar textarea:focus { border-color: var(--accent); }
.chat-inputbar button { width: 52px; border: none; border-radius: 10px; background: var(--accent); color: #06263a; font-size: 18px; cursor: pointer; }
.chat-inputbar button:disabled { opacity: .5; }

/* прогресс-бары */
.bar { height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; margin-top: 8px; }
.bar > span { display: block; height: 100%; background: var(--accent2); width: 0; transition: width .4s; }
.bar > span.warn { background: var(--warn); }
.bar > span.danger { background: var(--danger); }