:root {
  --bg: #0e1116;
  --panel: #171c23;
  --panel-2: #1f2630;
  --text: #e6edf3;
  --muted: #9aa7b4;
  --accent: #4ea1ff;
  --warn: #ffb454;
  --err: #ff6b6b;
  --ok: #5ed18f;
  --border: #2a323d;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 1.15rem; }
.brand span { color: var(--accent); }
nav { display: flex; gap: 0.25rem; flex-wrap: wrap; }
nav button {
  background: transparent; color: var(--muted); border: none;
  padding: 0.4rem 0.7rem; border-radius: 6px; cursor: pointer; font-size: 0.9rem;
}
nav button:hover { color: var(--text); background: var(--panel-2); }
nav button.active { color: var(--text); background: var(--panel-2); }
.controls { margin-left: auto; display: flex; gap: 0.5rem; align-items: center; }
.controls select, .controls button {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 0.35rem 0.6rem; cursor: pointer;
}

main { padding: 1.25rem; max-width: 1760px; margin: 0 auto; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 1rem; }
.card .value { font-size: 2rem; font-weight: 700; }
.card .label { color: var(--muted); font-size: 0.85rem; margin-top: 0.25rem; }
.card .value.warn { color: var(--warn); }

.detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(360px, 1fr)); gap: 1rem; align-items: start; }
.mini-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 0.75rem; }
.mini { background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px; padding: 0.75rem; }
.mini-value { font-size: 1.5rem; font-weight: 700; }
.mini-label { color: var(--muted); font-size: 0.8rem; margin-top: 0.2rem; }

.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 1rem; margin-bottom: 1.5rem; overflow-x: auto; }
.panel h2 { margin: 0 0 0.75rem; font-size: 1rem; font-weight: 600; }
.panel .chart-wrap { position: relative; height: 320px; }

table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { text-align: left; padding: 0.45rem 0.6rem; border-bottom: 1px solid var(--border); vertical-align: top; white-space: nowrap; }
th { color: var(--muted); font-weight: 600; }
/* Cells that may hold long free text: let them wrap instead of stretching the table. */
td.wrap { white-space: normal; max-width: 560px; word-break: break-word; }
td.mono, th.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
tbody tr:nth-child(even) { background: rgba(255,255,255,0.018); }
tbody tr:hover { background: rgba(255,255,255,0.045); }
tr.dev { cursor: pointer; }

/* Cross-entity links inside tables */
a.entlink { color: var(--accent); cursor: pointer; text-decoration: none; }
a.entlink:hover { text-decoration: underline; }
.row-flash { animation: row-flash 1.6s ease-out; }
@keyframes row-flash {
  from { background: rgba(78, 161, 255, 0.32); }
  to { background: transparent; }
}

/* Sortable headers + per-table filter */
th.sortable { cursor: pointer; user-select: none; }
th.sortable:hover { color: var(--text); }
th[data-sort-dir="asc"]::after { content: " \25B2"; color: var(--accent); }
th[data-sort-dir="desc"]::after { content: " \25BC"; color: var(--accent); }
input.filter, #search {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 0.35rem 0.6rem;
}
input.filter { margin-bottom: 0.75rem; width: 260px; max-width: 100%; }
#search { width: 210px; }

.badge { padding: 0.1rem 0.45rem; border-radius: 999px; font-size: 0.75rem; }
.badge.online { background: rgba(94,209,143,0.18); color: var(--ok); }
.badge.stale { background: rgba(255,180,84,0.18); color: var(--warn); }
.badge.offline { background: rgba(154,167,180,0.15); color: var(--muted); }
/* Code status: the ○/●/✕ glyph + word carries the meaning (no red/green reliance). */
.badge.open { background: rgba(154,167,180,0.15); color: var(--muted); }
.badge.sold { background: rgba(78,161,255,0.18); color: var(--accent); }
.badge.revoked { background: rgba(255,180,84,0.18); color: var(--warn); text-decoration: line-through; }

/* Inline table action buttons (revoke / copy) */
.btn-revoke, .btn-copy {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 0.25rem 0.6rem; font-size: 0.8rem; cursor: pointer;
}
.btn-revoke:hover { border-color: var(--warn); color: var(--warn); }
.btn-copy { margin-bottom: 0.6rem; }
.btn-copy:hover { border-color: var(--accent); }
/* Destructive actions: amber border + word + confirm dialog carry the meaning (no red/green reliance). */
.btn-danger {
  background: var(--panel-2); color: var(--warn); border: 1px solid var(--warn);
  border-radius: 6px; padding: 0.25rem 0.6rem; font-size: 0.8rem; cursor: pointer;
}
.btn-danger:hover { background: rgba(255,180,84,0.12); }

/* Admin forms (merchant create + code generation) */
.form-row { display: flex; gap: 0.7rem; flex-wrap: wrap; align-items: flex-end; margin-bottom: 0.5rem; }
.form-row label { display: flex; flex-direction: column; gap: 0.25rem; font-size: 0.8rem; color: var(--muted); }
.form-row input, .form-row select {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 0.4rem 0.6rem; font-size: 0.9rem;
}
.form-row button {
  background: var(--accent); color: #04101f; border: none; border-radius: 6px;
  padding: 0.5rem 0.9rem; font-weight: 600; cursor: pointer;
}
.form-row button:hover { filter: brightness(1.08); }
.form-msg { font-size: 0.85rem; min-height: 1rem; margin: 0.3rem 0; color: var(--muted); }
.form-msg.err { color: var(--err); }
.code-output {
  width: 100%; min-height: 130px; margin-top: 0.6rem; resize: vertical;
  background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 0.6rem; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.9rem;
}
tr.merch { cursor: pointer; }

.sev-error, .sev-critical { color: var(--err); }
.sev-warn { color: var(--warn); }
.muted { color: var(--muted); }
.loading { color: var(--muted); padding: 2rem; text-align: center; }

/* login */
.login-body { display: flex; align-items: center; justify-content: center; height: 100vh; }
.login-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
  padding: 2rem; width: 320px; display: flex; flex-direction: column; gap: 0.75rem;
}
.login-card h1 { margin: 0; }
.login-card p { color: var(--muted); margin: 0; font-size: 0.9rem; }
.login-card input, .login-card button {
  padding: 0.6rem; border-radius: 8px; border: 1px solid var(--border);
  background: var(--panel-2); color: var(--text); font-size: 1rem;
}
.login-card button { background: var(--accent); color: #04101f; border: none; font-weight: 600; cursor: pointer; }
.error { color: var(--err); font-size: 0.85rem; min-height: 1rem; }

/* live device cards */
.live-cards { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1.25rem; }
.live-card { padding: 0; overflow: hidden; display: flex; flex-direction: column; align-items: stretch; }
.live-canvas { width: 100%; aspect-ratio: 1 / 1; height: auto; display: block; background: #050608; }
.live-card-body { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 0.3rem; padding: 0.9rem 1rem 1.1rem; min-width: 0; }
.live-card .value { font-size: 1rem; word-break: break-all; }
.live-users { max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--accent); }
.live-controls-toggle { margin-top: 0.4rem; padding: 0.4rem 0.9rem; border-radius: 8px; border: 1px solid var(--border); background: var(--panel-2); color: var(--text); cursor: pointer; font-size: 0.82rem; }
.live-controls-toggle:hover { border-color: var(--accent); }
.live-controls-toggle.open { background: var(--accent); color: #04101f; border-color: transparent; }
.live-controls { width: 100%; margin-top: 0.9rem; padding-top: 1.15rem; border-top: 1px solid var(--border); display: flex; flex-direction: column; gap: 1.5rem; text-align: left; min-width: 0; }
.live-state { align-self: stretch; font-size: 0.8rem; color: var(--muted); margin-bottom: 0.2rem; }
.live-row { display: flex; align-items: center; gap: 0.75rem; font-size: 0.82rem; color: var(--muted); min-width: 0; }
.live-row > span:first-child { min-width: 76px; flex-shrink: 0; }
.live-row input[type=range] { flex: 1; min-width: 0; accent-color: var(--accent); }
.live-row select { flex: 1; min-width: 0; max-width: 100%; box-sizing: border-box; height: 34px; padding: 0 0.6rem; border-radius: 8px; border: 1px solid var(--border); background: var(--panel-2); color: var(--text); }
.live-val { min-width: 38px; flex-shrink: 0; text-align: right; color: var(--text); }
.live-feedback { min-height: 1rem; margin-top: 0.1rem; color: var(--ok); font-size: 0.8rem; }
.live-update-btn { flex: 1; height: 34px; padding: 0 0.9rem; border-radius: 8px; border: 1px solid var(--border); background: var(--panel-2); color: var(--text); cursor: pointer; font-size: 0.82rem; }
.live-update-btn:hover { border-color: var(--accent); }
.live-update-btn:disabled { opacity: 0.5; cursor: default; }

/* --- LLM config tab --- */
.table-scroll { overflow-x: auto; }
table.llm input, table.llm select { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); border-radius: 6px; padding: 4px 6px; font-size: 0.8rem; }
table.llm td { padding: 4px 6px; vertical-align: middle; }
.llm-actions { display: flex; align-items: center; gap: 0.6rem; margin-top: 0.8rem; }
.llm-actions button { height: 32px; padding: 0 0.9rem; border-radius: 8px; border: 1px solid var(--border); background: var(--panel-2); color: var(--text); cursor: pointer; font-size: 0.82rem; }
.llm-actions button.primary { border-color: var(--accent); }
button.danger { border: 1px solid var(--border); background: var(--panel-2); color: var(--text); border-radius: 6px; cursor: pointer; padding: 2px 8px; }
button.danger:hover { border-color: var(--err); color: var(--err); }

/* --- Studio chats & drafts (admin) --- */
.chat-toolbar { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; flex-wrap: wrap; }
.chat-toolbar select { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); border-radius: 6px; padding: 0.3rem 0.5rem; }
.chat-row { cursor: pointer; }
.chat-back { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); border-radius: 6px; padding: 0.35rem 0.7rem; cursor: pointer; margin-bottom: 0.75rem; }
.chat-back:hover { border-color: var(--accent); }

.chat-transcript { display: flex; flex-direction: column; gap: 0.85rem; }
.chat-msg { border: 1px solid var(--border); border-radius: 8px; padding: 0.6rem 0.8rem; max-width: 820px; }
.chat-msg-user { align-self: flex-end; background: var(--panel-2); border-left: 3px solid var(--accent); }
.chat-msg-assistant { align-self: stretch; background: var(--panel); }
.chat-role { color: var(--muted); font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 0.35rem; }
.chat-text { white-space: pre-wrap; word-break: break-word; line-height: 1.5; }
.chat-msg > * + * { margin-top: 0.4rem; }

.chat-thinking summary, .chat-tool summary { cursor: pointer; color: var(--accent); font-size: 0.85rem; }
.chat-tool { border: 1px solid var(--accent); border-radius: 6px; padding: 0.3rem 0.5rem; }
.chat-thinking pre.wrap { white-space: pre-wrap; word-break: break-word; color: var(--muted); font-style: italic; }
pre.code { background: var(--bg); border: 1px solid var(--border); border-radius: 6px; padding: 0.5rem 0.7rem; overflow-x: auto; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.8rem; line-height: 1.45; margin: 0.4rem 0 0; }
.chat-tool-result { color: var(--muted); font-size: 0.8rem; margin-top: 0.35rem; white-space: pre-wrap; }
.chat-tool-result.err { color: var(--warn); }
.chat-chip { display: inline-flex; align-items: center; padding: 0.1rem 0.5rem; border: 1px solid var(--accent); border-radius: 999px; color: var(--accent); font-size: 0.75rem; }
.chat-error-block { border: 1px dashed var(--warn); border-radius: 6px; padding: 0.4rem 0.6rem; color: var(--warn); }

.chat-drafts { display: flex; flex-wrap: wrap; gap: 0.9rem; }
.chat-draft { display: flex; flex-direction: column; align-items: center; gap: 0.25rem; font-size: 0.78rem; }
.chat-draft img { image-rendering: pixelated; background: #05060a; border: 1px solid var(--border); border-radius: 6px; }
.chat-draft-lg { cursor: pointer; padding: 0.5rem; border: 1px solid var(--border); border-radius: 8px; background: var(--panel-2); width: 108px; text-align: center; }
.chat-draft-lg:hover { border-color: var(--accent); }

/* --- Auth screens (login / not-authorized) --- */
.auth-screen { max-width: 420px; margin: 12vh auto 0; text-align: center; background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 2rem; }
.auth-screen h1 { margin: 0 0 0.5rem; }
.auth-screen .primary { margin-top: 0.75rem; padding: 0.55rem 1.2rem; font-size: 1rem; }
.auth-screen .auth-alt { margin-top: 1.25rem; font-size: 0.85rem; }
.auth-screen a { color: var(--accent); }