/* ================================================================
   DESIGN TOKENS — single source of truth. Solar identity: green +
   gold. Two themes (dark default / light) via [data-theme] on <html>.
   ================================================================ */
:root {
  --accent: #0e9d52;          /* solar green */
  --accent-rgb: 14, 157, 82;
  --accent-2: #eab308;        /* solar gold */
  --accent-2-rgb: 234, 179, 8;
  --on-accent: #ffffff;
  --ok: #22c55e;
  --warn: #f59e0b;
  --danger: #ef4444;
  --radius: 10px;

  --bg: #0f172a;
  --surface: #1e293b;
  --surface-2: #273549;
  --border: #334155;
  --text: #e2e8f0;
  --text-dim: #94a3b8;

  --content-max-width: 100%;
  --content-padding: 14px;
}
:root[data-theme="light"] {
  --bg: #f4f6f8; --surface: #ffffff; --surface-2: #eef1f4;
  --border: #d7dde3; --text: #17202e; --text-dim: #5b6673;
}
@media (min-width: 640px)  { :root { --content-max-width: 720px;  --content-padding: 20px; } }
@media (min-width: 900px)  { :root { --content-max-width: 1100px; --content-padding: 28px; } }
@media (min-width: 1280px) { :root { --content-max-width: 1440px; --content-padding: 36px; } }

* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg); color: var(--text); -webkit-tap-highlight-color: transparent; }
#app { height: 100vh; display: flex; flex-direction: column; overflow: hidden; }

header.topbar { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  padding: 12px var(--content-padding); background: var(--surface); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10; }
header.topbar h1 { font-size: 16px; margin: 0; font-weight: 600; display: inline-flex; align-items: center; gap: 8px; }
header.topbar h1 .logo { color: var(--accent); }
header.topbar .user { font-size: 12px; color: var(--text-dim); display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.user-meta { display: inline-flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.user-controls { display: inline-flex; align-items: center; gap: 8px; }
@media (max-width: 620px) { header.topbar .user { width: 100%; justify-content: space-between; } }
.topbar-left { display: flex; align-items: center; gap: 8px; min-width: 0; }
.nav-toggle { display: inline-flex; align-items: center; justify-content: center; background: transparent;
  color: var(--text); border: none; cursor: pointer; font-size: 22px; line-height: 1; padding: 2px 6px; }

.shell { flex: 1; display: flex; min-height: 0; }
.sidebar { position: fixed; inset-block: 0; inset-inline-start: 0; z-index: 40; width: 248px; max-width: 82vw;
  background: var(--surface); border-inline-end: 1px solid var(--border); overflow-y: auto; padding: 10px 0;
  transform: translateX(-100%); transition: transform .22s ease; }
[dir="rtl"] .sidebar { transform: translateX(100%); }
.sidebar.open { transform: none; }
.sidebar-brand { display: flex; align-items: center; gap: 10px; padding: 16px 18px; margin-bottom: 6px;
  border-bottom: 1px solid var(--border); font-weight: 700; font-size: 15px; }
.sidebar-brand .sun { font-size: 22px; }
.sidebar nav { display: flex; flex-direction: column; }
.sidebar a { display: flex; align-items: center; gap: 12px; padding: 11px 20px; color: var(--text-dim);
  text-decoration: none; font-size: 14px; border-inline-start: 3px solid transparent; white-space: nowrap; }
.sidebar a:hover { background: var(--surface-2); color: var(--text); }
.sidebar a.active { color: var(--text); background: var(--surface-2); border-inline-start-color: var(--accent); font-weight: 600; }
.sidebar a .nav-icon { font-size: 17px; width: 22px; text-align: center; flex-shrink: 0; }
.sidebar-overlay { position: fixed; inset: 0; z-index: 39; background: rgba(0,0,0,.5); opacity: 0;
  pointer-events: none; transition: opacity .22s ease; }
.sidebar-overlay.open { opacity: 1; pointer-events: auto; }
@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .sidebar { position: static; transform: none; width: 240px; max-width: none; z-index: auto; }
  [dir="rtl"] .sidebar { transform: none; }
  .sidebar-overlay { display: none; }
}
main { flex: 1; min-width: 0; overflow-y: auto; width: 100%; margin: 0 auto;
  max-width: var(--content-max-width); padding: var(--content-padding); }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px; margin-bottom: 12px; }
.card:has(table) { overflow-x: auto; }
.grid { display: grid; gap: 12px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .grid.cols-2 { grid-template-columns: 1fr 1fr; } .grid.cols-3 { grid-template-columns: repeat(3,1fr); } }
.grid.cards { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

h2.page-title { font-size: 20px; margin: 0 0 14px; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }

.stat { text-align: center; }
.stat .value { font-size: 28px; font-weight: 700; color: var(--accent); }
.stat .label { font-size: 12px; color: var(--text-dim); margin-top: 4px; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 600;
  background: var(--surface-2); color: var(--text-dim); white-space: nowrap; }
.badge.ok { background: rgba(34,197,94,.15); color: var(--ok); }
.badge.warn { background: rgba(245,158,11,.15); color: var(--warn); }
.badge.danger { background: rgba(239,68,68,.15); color: var(--danger); }
.badge.info { background: rgba(var(--accent-rgb),.15); color: var(--accent); }
.badge.gold { background: rgba(var(--accent-2-rgb),.15); color: var(--accent-2); }

table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 520px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); }
th { color: var(--text-dim); font-weight: 500; font-size: 12px; }
tr.selected-row { background: rgba(var(--accent-rgb),.10); }
[dir="rtl"] th, [dir="rtl"] td { text-align: right; }

button, .btn { background: var(--accent); color: var(--on-accent); border: none; border-radius: 8px;
  padding: 10px 16px; font-size: 14px; font-weight: 600; cursor: pointer; }
button:disabled { opacity: .5; cursor: not-allowed; }
button.secondary { background: var(--surface-2); color: var(--text); border: 1px solid var(--border); }
button.danger { background: var(--danger); }
button.sm { padding: 5px 12px; font-size: 12px; }

input, select, textarea { width: 100%; padding: 10px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--surface-2); color: var(--text); font-size: 14px; margin-bottom: 10px; }
label { font-size: 12px; color: var(--text-dim); display: block; margin-bottom: 4px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 560px) { .field-row { grid-template-columns: 1fr; } }

.error-banner { background: rgba(239,68,68,.15); color: var(--danger); border: 1px solid var(--danger);
  border-radius: 8px; padding: 10px 12px; margin-bottom: 12px; font-size: 13px; }
.success-banner { background: rgba(34,197,94,.15); color: var(--ok); border: 1px solid var(--ok);
  border-radius: 8px; padding: 10px 12px; margin-bottom: 12px; font-size: 13px; }
.muted { color: var(--text-dim); font-size: 12px; }
.section-title { font-size: 13px; font-weight: 700; margin: 18px 0 8px; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: .04em; }
a.link { color: var(--accent); text-decoration: none; cursor: pointer; }
.spinner { display: inline-block; width: 16px; height: 16px; border: 2px solid var(--text-dim);
  border-top-color: var(--accent); border-radius: 50%; animation: spin .6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* KPI tiles + scenario compare + warnings — solar-specific */
.kpi-row { display: flex; gap: 10px; flex-wrap: wrap; margin: 10px 0; }
.kpi { flex: 1; min-width: 120px; border: 1px solid var(--border); border-radius: 10px; padding: 12px; text-align: center; background: var(--surface-2); }
.kpi b { display: block; font-size: 22px; color: var(--accent); }
.kpi.gold b { color: var(--accent-2); }
.kpi span { font-size: 11px; color: var(--text-dim); }
.warn-box { padding: 9px 12px; margin: 8px 0; border-radius: 8px; font-size: 13px; line-height: 1.5; }
.warn-box.high { background: rgba(239,68,68,.12); border-inline-start: 3px solid var(--danger); color: var(--danger); }
.warn-box.medium { background: rgba(245,158,11,.12); border-inline-start: 3px solid var(--warn); color: var(--warn); }
.warn-box.low { background: var(--surface-2); border-inline-start: 3px solid var(--text-dim); }
.scenario-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; }
.scenario-card { border: 1px solid var(--border); border-radius: 10px; padding: 12px; cursor: pointer; background: var(--surface-2); }
.scenario-card.selected { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(var(--accent-rgb),.25); }
.scenario-card h4 { margin: 0 0 8px; font-size: 13px; }
.scenario-card .big { font-size: 24px; font-weight: 800; color: var(--accent); }
.scenario-card .rows { font-size: 12px; color: var(--text-dim); margin-top: 6px; line-height: 1.7; }

.chat-thread { display: flex; flex-direction: column; gap: 10px; margin-bottom: 12px; max-height: 55vh; overflow-y: auto; }
.chat-msg { max-width: 88%; padding: 9px 13px; border-radius: 12px; font-size: 14px; line-height: 1.5; white-space: pre-wrap; }
.chat-msg.user { align-self: flex-end; background: rgba(var(--accent-rgb),.14); border: 1px solid var(--accent); }
.chat-msg.bot { align-self: flex-start; background: var(--surface-2); border: 1px solid var(--border); }

.lang-toggle { height: 30px; display: inline-flex; align-items: center; justify-content: center;
  background: var(--surface-2); color: var(--text); border: 1px solid var(--border); border-radius: 999px;
  padding: 0 12px; font-size: 12px; font-weight: 600; cursor: pointer; }

.pipeline-step { border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; margin-bottom: 10px; }
.pipeline-step .step-head { display: flex; align-items: center; gap: 8px; font-weight: 600; margin-bottom: 4px; }
.pipeline-step .step-num { width: 22px; height: 22px; border-radius: 50%; background: var(--accent); color: #fff;
  display: inline-flex; align-items: center; justify-content: center; font-size: 12px; flex-shrink: 0; }
.pipeline-step.done .step-num { background: var(--ok); }
.pipeline-step.locked { opacity: .55; }

/* Conversational build chat */
.build-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.build-head-controls { display: flex; align-items: center; gap: 8px; }
.build-session-select { width: auto; max-width: 220px; margin-bottom: 0; padding: 7px 10px; font-size: 13px; }
.build-head-controls button { padding: 7px 12px; font-size: 13px; }

.artifact-card { align-self: flex-start; max-width: 96%; width: 100%; background: var(--surface-2);
  border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px; }
.artifact-title { font-weight: 700; font-size: 13px; margin-bottom: 8px; color: var(--text); }
.artifact-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.artifact-table th, .artifact-table td { padding: 6px 8px; border-bottom: 1px solid var(--border); text-align: start; }
.artifact-table tr.sel td { background: rgba(var(--accent-rgb),.12); font-weight: 600; }
.trap-callout { background: rgba(245,158,11,.14); color: var(--warn); border: 1px solid var(--warn);
  border-radius: 8px; padding: 8px 10px; font-size: 12.5px; margin-bottom: 8px; font-weight: 600; }
.kpi-row { display: flex; flex-wrap: wrap; gap: 10px; }
.kpi { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px;
  min-width: 84px; display: flex; flex-direction: column; }
.kpi-v { font-size: 18px; font-weight: 700; color: var(--accent); }
.kpi-l { font-size: 11px; color: var(--text-dim); margin-top: 2px; }
.artifact-warn { margin: 8px 0 0; padding-inline-start: 18px; font-size: 12.5px; color: var(--text-dim); }
.artifact-warn li.sev-high { color: var(--danger); }
.artifact-warn li.sev-medium { color: var(--warn); }
.artifact-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.artifact-actions .btn, .artifact-actions button { padding: 7px 12px; font-size: 13px; text-decoration: none;
  display: inline-flex; align-items: center; }
