:root {
  --bg: #080b14;
  --bg-soft: #0d1220;
  --panel: #111827;
  --panel-2: #151d2e;
  --border: #223049;
  --border-soft: #1a2537;
  --text: #e8edf7;
  --muted: #8b9ab5;
  --faint: #64718a;
  --accent: #7b6cff;
  --accent-2: #25d0c0;
  --accent-soft: rgba(123, 108, 255, 0.14);
  --green: #3ddc97;
  --yellow: #f6c453;
  --red: #ff6b81;
  --blue: #5aa8ff;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --radius: 14px;
  --radius-sm: 10px;
  --font: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background:
    radial-gradient(1200px 800px at 85% -10%, rgba(37, 208, 192, 0.08), transparent 60%),
    radial-gradient(900px 600px at 10% 0%, rgba(123, 108, 255, 0.10), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
code, .mono { font-family: var(--mono); }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.faint { color: var(--faint); }
.small { font-size: 12px; }
.right { text-align: right; }
.nowrap { white-space: nowrap; }
.grow { flex: 1; }
.row { display: flex; align-items: center; gap: 10px; }
.row.wrap { flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.stack { display: flex; flex-direction: column; gap: 12px; }
.mt-0 { margin-top: 0; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mb-0 { margin-bottom: 0; }
.mb-12 { margin-bottom: 12px; }
.p-0 { padding: 0 !important; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.clickable { cursor: pointer; }

/* ---------------------------------------------------------------- login */
.login-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login-card {
  width: 100%;
  max-width: 420px;
  background: linear-gradient(180deg, rgba(21, 29, 46, 0.96), rgba(13, 18, 32, 0.96));
  border: 1px solid var(--border);
  border-radius: 22px;
  box-shadow: var(--shadow);
  padding: 38px 34px 26px;
  text-align: center;
  backdrop-filter: blur(12px);
}
.login-card h1 { margin: 16px 0 4px; font-size: 26px; letter-spacing: -0.04em; }
.login-card form { margin-top: 26px; text-align: left; }
.login-card .btn { margin-top: 6px; }
.login-hint { margin: 18px 0 0; font-size: 12px; color: var(--faint); line-height: 1.6; }
.login-hint code { color: var(--muted); }
.login-back {
  display: inline-block; margin-top: 14px; font-size: 12.5px; color: var(--muted);
  border-bottom: 1px solid transparent; transition: color .15s ease, border-color .15s ease;
}
.login-back:hover { color: var(--text); border-color: var(--border); }
.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: -0.06em;
  color: #fff;
  background: linear-gradient(135deg, #7b6cff, #25d0c0);
  box-shadow: 0 8px 24px rgba(123, 108, 255, 0.35);
  flex: none;
}
.brand-mark.large { width: 58px; height: 58px; border-radius: 16px; font-size: 20px; margin: 0 auto; }

/* ---------------------------------------------------------------- layout */
.app { display: flex; min-height: 100vh; }
.sidebar {
  width: 252px;
  flex: none;
  border-right: 1px solid var(--border-soft);
  background: rgba(8, 11, 20, 0.72);
  backdrop-filter: blur(14px);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 20;
}
.brand { display: flex; align-items: center; gap: 12px; padding: 22px 20px 18px; }
.brand-text { display: flex; flex-direction: column; min-width: 0; }
.brand-text strong { font-size: 14px; letter-spacing: -0.01em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.brand-text span { font-size: 11px; color: var(--faint); }
.nav { padding: 8px 12px; display: flex; flex-direction: column; gap: 3px; overflow-y: auto; flex: 1; }
.nav a {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--muted);
  font-weight: 500;
  font-size: 13.5px;
  transition: background 0.15s, color 0.15s;
}
.nav a:hover { background: rgba(255, 255, 255, 0.035); color: var(--text); }
.nav a.active { background: var(--accent-soft); color: #c3bcff; }
.nav-icon { display: inline-flex; width: 18px; height: 18px; opacity: 0.9; }
.nav-icon svg { width: 18px; height: 18px; }
.nav-label { padding: 16px 12px 6px; font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--faint); }
.sidebar-footer {
  border-top: 1px solid var(--border-soft);
  padding: 14px 20px;
  font-size: 12px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
}
.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 30px 16px;
  border-bottom: 1px solid rgba(34, 48, 73, 0.45);
  background: rgba(8, 11, 20, 0.55);
  backdrop-filter: blur(14px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar h2 { margin: 0; font-size: 21px; letter-spacing: -0.03em; }
.topbar p { margin: 2px 0 0; color: var(--faint); font-size: 12.5px; }
.topbar-title { flex: 1; min-width: 0; }
.topbar-actions { display: flex; align-items: center; gap: 8px; }
.view { padding: 26px 30px 60px; max-width: 1500px; width: 100%; margin: 0 auto; }
.only-mobile { display: none; }

/* ---------------------------------------------------------------- cards */
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.stat-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin-bottom: 20px; }
.stat {
  background: linear-gradient(180deg, rgba(21, 29, 46, 0.9), rgba(15, 21, 36, 0.9));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 18px 16px;
  position: relative;
  overflow: hidden;
}
.stat::after {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, rgba(123, 108, 255, 0.7), transparent 60%);
  opacity: 0.5;
}
.stat-top { display: flex; align-items: center; justify-content: space-between; color: var(--muted); font-size: 12.5px; }
.stat-icon {
  width: 32px; height: 32px; border-radius: 9px;
  display: grid; place-items: center;
  background: rgba(123, 108, 255, 0.12);
  color: #b8b0ff;
}
.stat-icon svg { width: 17px; height: 17px; }
.stat-value { margin-top: 12px; font-size: 27px; font-weight: 700; letter-spacing: -0.04em; }
.stat-sub { margin-top: 3px; font-size: 12px; color: var(--faint); }
.stat-sub .up { color: var(--green); }
.stat-sub .down { color: var(--red); }

.panel {
  background: rgba(15, 21, 36, 0.78);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border-soft);
}
.panel-head h3 { margin: 0; font-size: 14px; letter-spacing: -0.01em; }
.panel-head p { margin: 2px 0 0; color: var(--faint); font-size: 12px; }
.panel-body { padding: 18px; }
.panel-body.p-0 { padding: 0; }
.panel-foot { padding: 12px 18px; border-top: 1px solid var(--border-soft); display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.section-title { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin: 0 0 14px; }
.section-title h3 { margin: 0; font-size: 15px; }
.section-title p { margin: 2px 0 0; color: var(--faint); font-size: 12px; }

/* ---------------------------------------------------------------- buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  padding: 9px 14px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 550;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.05s, opacity 0.15s;
  white-space: nowrap;
}
.btn:hover { background: rgba(255, 255, 255, 0.06); border-color: #2e3d5a; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn svg { width: 15px; height: 15px; }
.btn.primary { background: linear-gradient(135deg, #7b6cff, #6555ea); border-color: #7b6cff; color: #fff; box-shadow: 0 8px 22px rgba(123, 108, 255, 0.25); }
.btn.primary:hover { background: linear-gradient(135deg, #8a7dff, #705fff); }
.btn.ghost { background: transparent; }
.btn.danger { color: #ff9aa8; border-color: rgba(255, 107, 129, 0.35); background: rgba(255, 107, 129, 0.07); }
.btn.danger:hover { background: rgba(255, 107, 129, 0.14); }
.btn.small { padding: 6px 10px; font-size: 12px; border-radius: 8px; }
.btn.block { width: 100%; }
.icon-btn {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  width: 36px; height: 36px; border-radius: 10px;
  display: inline-grid; place-items: center; cursor: pointer;
}
.icon-btn:hover { background: rgba(255, 255, 255, 0.06); }
.icon-btn svg { width: 16px; height: 16px; }
.btn-row { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }

/* ---------------------------------------------------------------- badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  border: 1px solid transparent;
  white-space: nowrap;
}
.badge.ok { color: #7bf0bb; background: rgba(61, 220, 151, 0.10); border-color: rgba(61, 220, 151, 0.22); }
.badge.warn { color: #ffd98a; background: rgba(246, 196, 83, 0.10); border-color: rgba(246, 196, 83, 0.22); }
.badge.err { color: #ff9aa8; background: rgba(255, 107, 129, 0.10); border-color: rgba(255, 107, 129, 0.22); }
.badge.info { color: #a9ccff; background: rgba(90, 168, 255, 0.10); border-color: rgba(90, 168, 255, 0.22); }
.badge.neutral { color: var(--muted); background: rgba(139, 154, 181, 0.08); border-color: rgba(139, 154, 181, 0.18); }
.badge.accent { color: #c3bcff; background: var(--accent-soft); border-color: rgba(123, 108, 255, 0.25); }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; background: var(--faint); flex: none; }
.dot.ok { background: var(--green); box-shadow: 0 0 0 4px rgba(61, 220, 151, 0.10); }
.dot.warn { background: var(--yellow); box-shadow: 0 0 0 4px rgba(246, 196, 83, 0.10); }
.dot.err { background: var(--red); box-shadow: 0 0 0 4px rgba(255, 107, 129, 0.10); }
.dot.info { background: var(--blue); }

/* ---------------------------------------------------------------- tables */
.table-wrap { width: 100%; overflow-x: auto; }
table.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th {
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--faint);
  font-weight: 600;
  padding: 11px 16px;
  border-bottom: 1px solid var(--border-soft);
  white-space: nowrap;
}
.table td { padding: 12px 16px; border-bottom: 1px solid rgba(34, 48, 73, 0.45); vertical-align: middle; }
.table tr:last-child td { border-bottom: none; }
.table tbody tr { transition: background 0.12s; }
.table tbody tr:hover { background: rgba(255, 255, 255, 0.018); }
.table tbody tr.clickable:hover { background: rgba(123, 108, 255, 0.055); cursor: pointer; }
.table .empty { color: var(--faint); text-align: center; padding: 34px 16px; }
.table .mono { font-size: 12px; }
.cell-main { display: flex; flex-direction: column; gap: 1px; }
.cell-main strong { font-weight: 600; }
.cell-main span { color: var(--faint); font-size: 11.5px; }

/* ---------------------------------------------------------------- forms */
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field > span { font-size: 12.5px; font-weight: 550; color: var(--muted); }
.field .help { font-size: 11.5px; color: var(--faint); }
input[type="text"], input[type="password"], input[type="number"], input[type="url"],
input[type="search"], select, textarea {
  width: 100%;
  background: rgba(8, 11, 20, 0.6);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 9px 11px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  min-height: 38px;
}
input:focus, select:focus, textarea:focus {
  border-color: rgba(123, 108, 255, 0.65);
  box-shadow: 0 0 0 3px rgba(123, 108, 255, 0.12);
}
textarea { min-height: 92px; resize: vertical; line-height: 1.55; }
select { cursor: pointer; }
select option { background: #111827; }
input::placeholder, textarea::placeholder { color: #4d5971; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 14px; }
.form-grid .full { grid-column: 1 / -1; }
.checkbox { display: flex; align-items: center; gap: 9px; font-size: 13px; color: var(--muted); cursor: pointer; }
.checkbox input { width: 16px; height: 16px; accent-color: var(--accent); }
.form-error { color: #ff9aa8; background: rgba(255, 107, 129, 0.08); border: 1px solid rgba(255, 107, 129, 0.22); padding: 8px 10px; border-radius: 8px; font-size: 12.5px; margin-bottom: 12px; }
.form-note { color: var(--faint); font-size: 12px; line-height: 1.6; }

/* ---------------------------------------------------------------- modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(3, 5, 10, 0.72);
  backdrop-filter: blur(5px);
  display: grid;
  place-items: center;
  padding: 22px;
  z-index: 100;
  animation: fadeIn 0.12s ease-out;
}
.modal {
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow: auto;
  background: linear-gradient(180deg, #151d2e, #0f1524);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  animation: popIn 0.14s ease-out;
}
.modal.wide { max-width: 860px; }
.modal-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; padding: 18px 20px 12px; }
.modal-head h3 { margin: 0; font-size: 16px; }
.modal-head p { margin: 3px 0 0; font-size: 12px; color: var(--faint); }
.modal-body { padding: 8px 20px 4px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 14px 20px 18px; border-top: 1px solid var(--border-soft); margin-top: 12px; }
.modal-close { background: none; border: none; color: var(--faint); cursor: pointer; font-size: 20px; line-height: 1; padding: 2px 6px; border-radius: 6px; }
.modal-close:hover { color: var(--text); background: rgba(255, 255, 255, 0.05); }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes popIn { from { opacity: 0; transform: translateY(6px) scale(0.985); } to { opacity: 1; transform: none; } }

/* ---------------------------------------------------------------- toast */
.toast-root { position: fixed; right: 20px; bottom: 20px; display: flex; flex-direction: column; gap: 8px; z-index: 200; }
.toast {
  min-width: 240px;
  max-width: 380px;
  padding: 11px 14px;
  border-radius: 10px;
  background: #151d2e;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  font-size: 13px;
  animation: popIn 0.15s ease-out;
}
.toast.ok { border-color: rgba(61, 220, 151, 0.35); }
.toast.err { border-color: rgba(255, 107, 129, 0.4); }
.toast strong { display: block; font-size: 12.5px; margin-bottom: 2px; }

/* ---------------------------------------------------------------- progress */
.progress { height: 6px; border-radius: 999px; background: rgba(255, 255, 255, 0.06); overflow: hidden; margin-top: 5px; min-width: 90px; }
.progress > span { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, #7b6cff, #25d0c0); }
.progress.warn > span { background: linear-gradient(90deg, #f6c453, #ff9f43); }
.progress.err > span { background: linear-gradient(90deg, #ff6b81, #d94b62); }

/* ---------------------------------------------------------------- chart */
.chart { width: 100%; height: 210px; }
.chart svg { width: 100%; height: 100%; overflow: visible; }
.chart .bar { fill: url(#barGradient); opacity: 0.85; transition: opacity 0.15s; }
.chart .bar:hover { opacity: 1; }
.chart .axis { stroke: rgba(139, 154, 181, 0.16); stroke-width: 1; }
.chart .label { fill: var(--faint); font-size: 9.5px; font-family: var(--font); }
.chart .value { fill: var(--muted); font-size: 10px; font-family: var(--font); }
.chart-legend { display: flex; align-items: center; gap: 16px; font-size: 12px; color: var(--faint); }
.chart-legend .swatch { width: 9px; height: 9px; border-radius: 3px; display: inline-block; margin-right: 6px; background: linear-gradient(135deg, #7b6cff, #25d0c0); }

/* ---------------------------------------------------------------- provider */
.provider-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.provider-card { border: 1px solid var(--border); border-radius: 12px; padding: 15px 16px; background: rgba(17, 24, 39, 0.55); }
.provider-card .top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.provider-card .name { display: flex; align-items: center; gap: 9px; font-weight: 600; }
.provider-card .meta { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 7px; }
.provider-card .url { margin-top: 8px; font-size: 11.5px; color: var(--faint); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.key-list { margin-top: 12px; border-top: 1px solid var(--border-soft); padding-top: 10px; display: flex; flex-direction: column; gap: 7px; }
.key-row { display: flex; align-items: center; gap: 8px; font-size: 12px; }
.key-row .hint { font-family: var(--mono); color: var(--muted); font-size: 11.5px; }
.key-row .grow { min-width: 0; }
.key-row .actions { display: flex; gap: 4px; opacity: 0.45; transition: opacity 0.15s; }
.key-row:hover .actions { opacity: 1; }

/* ---------------------------------------------------------------- playground */
.playground { display: grid; grid-template-columns: 320px minmax(0, 1fr); gap: 16px; align-items: start; }
.pg-controls { position: sticky; top: 92px; }
.pg-chat { min-height: 560px; display: flex; flex-direction: column; }
.chat-log { flex: 1; overflow-y: auto; padding: 18px; display: flex; flex-direction: column; gap: 14px; max-height: calc(100vh - 320px); min-height: 380px; }
.chat-empty { margin: auto; text-align: center; color: var(--faint); padding: 40px 16px; }
.chat-empty .brand-mark { margin-bottom: 14px; }
.msg { display: flex; gap: 10px; max-width: 92%; }
.msg .avatar { width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; font-size: 11px; font-weight: 700; flex: none; background: rgba(123, 108, 255, 0.15); color: #c3bcff; }
.msg.user { margin-left: auto; flex-direction: row-reverse; }
.msg.user .avatar { background: rgba(37, 208, 192, 0.14); color: #7ff0e4; }
.msg .bubble { padding: 10px 13px; border-radius: 12px; background: rgba(255, 255, 255, 0.035); border: 1px solid var(--border-soft); white-space: pre-wrap; word-break: break-word; font-size: 13.5px; line-height: 1.6; }
.msg.user .bubble { background: rgba(123, 108, 255, 0.12); border-color: rgba(123, 108, 255, 0.2); }
.msg .meta { margin-top: 5px; font-size: 10.5px; color: var(--faint); display: flex; gap: 8px; flex-wrap: wrap; }
.chat-input { border-top: 1px solid var(--border-soft); padding: 12px; display: flex; flex-direction: column; gap: 8px; }
.chat-input textarea { min-height: 70px; border-radius: 10px; }
.chat-input .row { justify-content: space-between; }
.typing::after { content: "▍"; animation: blink 1s steps(1) infinite; color: var(--accent-2); }
@keyframes blink { 50% { opacity: 0; } }
.slider-row { display: flex; align-items: center; gap: 10px; }
.slider-row input[type="range"] { flex: 1; accent-color: var(--accent); }
.slider-row .val { font-family: var(--mono); font-size: 12px; color: var(--muted); min-width: 32px; text-align: right; }

/* ---------------------------------------------------------------- misc */
.code-block {
  background: rgba(8, 11, 20, 0.75);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  padding: 12px 14px;
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1.55;
  overflow: auto;
  max-height: 320px;
  white-space: pre-wrap;
  word-break: break-word;
  color: #b9c6dd;
}
.kv { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 7px 14px; font-size: 12.5px; }
.kv dt { color: var(--faint); }
.kv dd { margin: 0; overflow-wrap: anywhere; }
.empty-state { text-align: center; padding: 40px 20px; color: var(--faint); }
.empty-state strong { display: block; color: var(--muted); margin-bottom: 4px; }
.divider { height: 1px; background: var(--border-soft); margin: 16px 0; }
.filters { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.filters input[type="search"] { min-width: 200px; flex: 1; }
.pager { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.pager .page { font-size: 12px; color: var(--faint); }
.notice {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 11px 13px;
  border-radius: 10px;
  border: 1px solid rgba(90, 168, 255, 0.22);
  background: rgba(90, 168, 255, 0.07);
  color: #b7d3ff;
  font-size: 12.5px;
  line-height: 1.55;
  margin-bottom: 14px;
}
.notice.warn { border-color: rgba(246, 196, 83, 0.25); background: rgba(246, 196, 83, 0.07); color: #ffdf9e; }
.notice code { color: inherit; }
.secret-box { display: flex; gap: 8px; align-items: center; }
.secret-box input { font-family: var(--mono); font-size: 12px; }
.settings-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 18px; }

/* ---------------------------------------------------------------- responsive */
@media (max-width: 1180px) {
  .stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .playground { grid-template-columns: 280px minmax(0, 1fr); }
}
@media (max-width: 900px) {
  .sidebar { position: fixed; left: 0; top: 0; transform: translateX(-100%); transition: transform 0.2s ease; box-shadow: var(--shadow); }
  .sidebar.open { transform: none; }
  .only-mobile { display: inline-grid; }
  .topbar { padding: 14px 18px; }
  .view { padding: 18px 18px 50px; }
  .grid-2, .grid-3, .grid-4, .provider-grid, .settings-grid { grid-template-columns: 1fr; }
  .playground { grid-template-columns: 1fr; }
  .pg-controls { position: static; }
  .topbar-actions .btn span:not([data-icon]) { display: none; }
}
@media (max-width: 560px) {
  .stat-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .modal-backdrop { padding: 10px; }
  .modal { max-height: 94vh; }
  .topbar-title p { display: none; }
  .topbar-actions #logout-button { display: none; }
  .msg { max-width: 100%; }
  .kv { grid-template-columns: 110px minmax(0, 1fr); }
}