/* ============================================================
   Research Charts Library v0.1 — QP-RCL-001
   Scoped to /research/charts. Design tokens from the platform.
   ============================================================ */

:root {
  --bg-primary: #0a0e14;
  --bg-card: #131820;
  --bg-elevated: #1a212c;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.15);
  --text-primary: #e8ecf1;
  --text-secondary: #8a96a8;
  --text-tertiary: #5a6578;
  --accent-amber: #f59e0b;
  --accent-blue: #378add;
  --accent-green: #10b981;
  --accent-red: #ef4444;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Tajawal', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
}

.rc-wrap { max-width: 1200px; margin: 0 auto; padding: 24px 20px 80px; }

/* Header */
.rc-header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  padding-bottom: 20px; margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.rc-header h1 { font-size: 1.6rem; font-weight: 900; }
.rc-header h1 .rc-ver {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem;
  color: var(--accent-amber); border: 1px solid var(--accent-amber);
  border-radius: 4px; padding: 2px 6px; margin-inline-start: 8px; vertical-align: middle;
}
.rc-header p { color: var(--text-secondary); font-size: 0.92rem; }
.rc-back {
  color: var(--text-secondary); text-decoration: none; font-size: 0.9rem;
  border: 1px solid var(--border-strong); border-radius: 8px; padding: 8px 14px; transition: 0.15s;
}
.rc-back:hover { color: var(--text-primary); border-color: var(--accent-amber); }

/* Chart card */
.rc-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 14px; padding: 20px; margin-bottom: 28px;
}
.rc-card-head {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 12px; flex-wrap: wrap; margin-bottom: 16px;
}
.rc-card-id {
  font-family: 'JetBrains Mono', monospace; font-size: 0.68rem;
  letter-spacing: 0.08em; color: var(--accent-amber); text-transform: uppercase; margin-bottom: 4px;
}
.rc-card-head h2 { font-size: 1.15rem; font-weight: 800; }
.rc-card-head p { color: var(--text-secondary); font-size: 0.85rem; margin-top: 2px; }

/* Controls */
.rc-controls { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.rc-seg { display: inline-flex; border: 1px solid var(--border-strong); border-radius: 8px; overflow: hidden; }
.rc-seg button {
  background: var(--bg-elevated); color: var(--text-secondary); border: none;
  padding: 7px 13px; font-family: 'Tajawal', sans-serif; font-size: 0.82rem;
  cursor: pointer; transition: 0.12s; border-inline-start: 1px solid var(--border);
}
.rc-seg button:first-child { border-inline-start: none; }
.rc-seg button:hover { color: var(--text-primary); }
.rc-seg button.is-active {
  background: rgba(245, 158, 11, 0.14); color: var(--accent-amber); font-weight: 700;
}

/* Canvas */
.rc-canvas-wrap {
  position: relative; margin: 16px 0;
  background: var(--bg-primary); border: 1px solid var(--border);
  border-radius: 10px; padding: 12px;
  height: 380px;
}
.rc-canvas-wrap canvas { width: 100% !important; height: 100% !important; }

/* Metadata strip */
.rc-meta {
  display: flex; gap: 18px; flex-wrap: wrap;
  padding-top: 12px; border-top: 1px solid var(--border);
  font-size: 0.78rem; color: var(--text-secondary);
}
.rc-meta b { color: var(--text-primary); font-weight: 600; }
.rc-meta .rc-cur { color: var(--accent-amber); font-weight: 700; }

.rc-note {
  margin-top: 12px; padding: 10px 12px;
  background: rgba(245, 158, 11, 0.06); border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: 8px; font-size: 0.78rem; color: var(--text-secondary); line-height: 1.6;
}
.rc-note code {
  font-family: 'JetBrains Mono', monospace; color: var(--accent-amber);
  background: rgba(0,0,0,0.3); padding: 1px 5px; border-radius: 4px; direction: ltr; display: inline-block;
}

/* Actions */
.rc-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }
.rc-btn {
  background: transparent; border: 1px solid var(--accent-amber); color: var(--accent-amber);
  border-radius: 8px; padding: 9px 16px; font-family: 'Tajawal', sans-serif;
  font-size: 0.85rem; cursor: pointer; transition: 0.15s; text-decoration: none; display: inline-block;
}
.rc-btn:hover { background: rgba(245, 158, 11, 0.12); }
.rc-btn[hidden] { display: none !important; }
.rc-btn.secondary { border-color: var(--border-strong); color: var(--text-secondary); }
.rc-btn.secondary:hover { color: var(--text-primary); border-color: var(--accent-amber); background: transparent; }

.rc-loading, .rc-error {
  padding: 60px 20px; text-align: center; color: var(--text-tertiary); font-size: 0.9rem;
}
.rc-error { color: var(--accent-red); }

/* Freshness / failure banners */
.rc-banner {
  border-radius: 10px; padding: 12px 16px; margin-bottom: 20px;
  font-size: 0.86rem; line-height: 1.6; border: 1px solid;
}
.rc-banner.is-warn {
  background: rgba(245, 158, 11, 0.08); border-color: rgba(245, 158, 11, 0.4); color: #f5c26b;
}
.rc-banner.is-error {
  background: rgba(239, 68, 68, 0.08); border-color: rgba(239, 68, 68, 0.4); color: #f4a5a5;
}
.rc-stale {
  background: rgba(245, 158, 11, 0.1); border: 1px solid rgba(245, 158, 11, 0.45);
  border-radius: 8px; padding: 10px 14px; margin: 0 0 14px;
  font-size: 0.82rem; color: #f5c26b; line-height: 1.6; font-weight: 600;
}