:root {
  color-scheme: dark;
  --bg: #0b0e14;
  --panel: #131925;
  --panel-2: #192235;
  --line: #28364e;
  --text: #edf3ff;
  --muted: #9aa8bf;
  --accent: #66e3b4;
  --accent-2: #8c7bff;
  --danger: #ff8d9c;
}
* { box-sizing: border-box; }
body { margin: 0; background: radial-gradient(circle at 80% 0%, #1a2440 0, var(--bg) 48rem); color: var(--text); font: 16px/1.5 system-ui, sans-serif; }
.shell { width: min(960px, calc(100% - 32px)); margin: 0 auto; padding: 56px 0 80px; }
.hero { margin-bottom: 32px; max-width: 760px; }
.eyebrow, .section-heading span { color: var(--accent); font-size: 12px; letter-spacing: .16em; font-weight: 700; }
h1 { font-size: clamp(34px, 7vw, 68px); line-height: 1.02; letter-spacing: -.05em; margin: 12px 0 18px; }
h2 { font-size: 21px; margin: 0; }
.lede { color: var(--muted); font-size: 18px; max-width: 680px; }
.card { background: color-mix(in srgb, var(--panel) 92%, transparent); border: 1px solid var(--line); border-radius: 18px; padding: 24px; margin: 18px 0; box-shadow: 0 18px 50px #0003; }
.section-heading { display: flex; align-items: baseline; gap: 14px; margin-bottom: 20px; }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.wide { grid-column: 1 / -1; }
label { display: grid; gap: 8px; color: var(--muted); font-size: 13px; font-weight: 650; }
input, textarea { width: 100%; border: 1px solid var(--line); background: #0d131f; color: var(--text); border-radius: 10px; padding: 12px; font: inherit; }
textarea { resize: vertical; min-height: 130px; }
input:focus, textarea:focus { outline: 2px solid var(--accent-2); outline-offset: 1px; }
button { border: 0; border-radius: 999px; padding: 11px 18px; color: var(--text); font-weight: 750; cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .45; }
.primary { background: var(--accent); color: #06130e; }
.secondary { background: var(--panel-2); border: 1px solid var(--line); }
.button-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.admin-box { border-top: 1px solid var(--line); margin-top: 22px; padding-top: 16px; }
.admin-box summary { cursor: pointer; color: var(--accent); font-weight: 700; }
.admin-box p { color: var(--muted); font-size: 13px; max-width: 680px; }
.admin-box label { max-width: 520px; }
.status { min-height: 24px; color: var(--muted); }
.token-panel { background: #0d131f; border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin-top: 20px; }
.token-panel code { display: block; margin-top: 6px; color: var(--accent); overflow-wrap: anywhere; }
.hidden { display: none; }
.muted { color: var(--muted); font-size: 13px; }
.pill { border: 1px solid var(--line); border-radius: 999px; padding: 7px 12px; color: var(--muted); }
.output { min-height: 160px; white-space: pre-wrap; overflow-wrap: anywhere; background: #0a0f18; border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin-top: 18px; }
pre { white-space: pre-wrap; overflow-wrap: anywhere; background: #0a0f18; border: 1px solid var(--line); border-radius: 12px; padding: 16px; overflow-x: auto; }
code { color: #b7c9ff; }
.chat-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 18px; align-items: start; margin: 18px 0; }
.status-sidebar { position: sticky; top: 22px; display: grid; gap: 22px; padding: 18px; border: 1px solid var(--line); border-radius: 18px; background: color-mix(in srgb, var(--panel) 94%, transparent); box-shadow: 0 18px 50px #0003; }
.status-block { display: grid; gap: 10px; }
.sidebar-kicker { color: var(--accent); font-size: 10px; letter-spacing: .15em; font-weight: 800; margin: 0; }
.status-block h3 { color: var(--text); font-size: 13px; letter-spacing: .05em; text-transform: uppercase; margin: 0; }
.activity-line { display: flex; align-items: center; gap: 9px; color: var(--muted); font-size: 13px; }
.activity-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--line); }
.activity-dot.active { background: var(--accent); box-shadow: 0 0 0 5px #66e3b422; animation: pulse 1.4s infinite; }
.status-item { display: flex; justify-content: space-between; gap: 8px; padding: 8px 0; border-bottom: 1px solid var(--line); font-size: 12px; }
.status-item:last-child { border-bottom: 0; }
.status-item strong { text-align: right; color: var(--text); font-size: 12px; }
.status-label { color: var(--muted); }
.sidebar-note { padding-top: 12px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; line-height: 1.45; }
.chat-main { min-width: 0; margin: 0; }
.chat-header { display: flex; justify-content: space-between; align-items: start; gap: 16px; }
.chat-header .section-heading { margin-bottom: 3px; }
.chat-subtitle { color: var(--muted); font-size: 12px; margin: 0 0 20px; }
.chat-history { min-height: 360px; max-height: 590px; overflow-y: auto; display: flex; flex-direction: column; gap: 14px; padding: 18px 4px 18px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); scroll-behavior: smooth; }
.chat-empty { min-height: 310px; display: grid; place-content: center; justify-items: center; gap: 5px; color: var(--muted); text-align: center; }
.chat-empty strong { color: var(--text); font-size: 17px; }
.empty-mark { color: var(--accent); font-size: 28px; margin-bottom: 7px; }
.message { max-width: 88%; display: grid; gap: 9px; padding: 13px 15px; border: 1px solid var(--line); border-radius: 14px; animation: message-in .2s ease-out; }
.message-user { align-self: end; background: #1c3540; border-color: #2d6870; border-bottom-right-radius: 4px; }
.message-assistant { align-self: start; background: #171d31; border-color: #343b68; border-bottom-left-radius: 4px; }
.message-error { background: #351f2a; border-color: #754052; }
.message-meta { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 11px; font-weight: 750; letter-spacing: .06em; text-transform: uppercase; }
.message-avatar { display: grid; place-items: center; width: 22px; height: 22px; border-radius: 7px; font-size: 10px; letter-spacing: 0; }
.user-avatar { background: #3d7880; color: #d9ffff; }
.ai-avatar { background: var(--accent-2); color: #fff; font-size: 14px; }
.message-content { color: var(--text); white-space: pre-wrap; overflow-wrap: anywhere; }
.message-assistant.streaming .message-content::after { content: "▋"; color: var(--accent); margin-left: 3px; animation: blink .9s steps(2) infinite; }
.composer-label { display: block; margin-top: 20px; }
.composer { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; align-items: end; margin-top: 8px; }
.composer textarea { min-height: 76px; }
.send-button { height: 46px; white-space: nowrap; }
.composer-actions { justify-content: space-between; margin-top: 10px; }
@keyframes message-in { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: none; } }
@keyframes blink { 50% { opacity: 0; } }
@keyframes pulse { 50% { opacity: .45; } }
@media (max-width: 760px) { .shell { width: min(100% - 20px, 960px); padding-top: 28px; } .card { padding: 18px; } .grid { grid-template-columns: 1fr; } .wide { grid-column: auto; } .chat-layout { grid-template-columns: 1fr; } .status-sidebar { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); } .status-sidebar .status-block:first-child, .sidebar-note { grid-column: 1 / -1; } }
@media (max-width: 520px) { .status-sidebar { grid-template-columns: 1fr; } .status-sidebar .status-block:first-child, .sidebar-note { grid-column: auto; } .chat-header { display: grid; } .composer { grid-template-columns: 1fr; } .send-button { width: 100%; } .message { max-width: 96%; } }