/* ═══════════════════════════════════════════════════════════
   FORMULAS LIST — editorial register
   /formulas page. Reuses typography + tokens from Materials,
   Accord Composer, and Generator. Class prefix: .fl-*
   ═══════════════════════════════════════════════════════════ */

.fl-shell {
  max-width: 1280px;
  margin: 0 auto;
  padding: 40px 56px 96px;
}
@media (max-width: 1100px) { .fl-shell { padding: 32px 28px 80px; } }
@media (max-width: 640px)  { .fl-shell { padding: 24px 16px 72px; } }

/* ── Masthead ──────────────────────────────────────────────── */
.fl-mast {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: end;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border, #E8E0D3);
}
@media (max-width: 900px) {
  .fl-mast { grid-template-columns: 1fr; gap: 18px; align-items: start; }
}
.fl-eyebrow {
  display: flex; align-items: center; gap: 14px;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.fl-eyebrow::before {
  content: ""; width: 22px; height: 1px; background: var(--rose-gold);
}
.fl-title {
  font-family: var(--font-display, 'Instrument Serif'), serif;
  font-weight: 400;
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  line-height: 1;
  letter-spacing: -0.014em;
  color: var(--text-primary, var(--espresso));
  margin: 0;
}
.fl-title em { font-style: italic; font-weight: 400; }
.fl-submeta {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  font-feature-settings: "tnum" 1;
  display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
}
.fl-submeta .fl-sep { color: var(--text-faint, #C2B8A8); }

.fl-mast-actions {
  display: flex;
  align-items: end;
  gap: 8px;
  flex-wrap: wrap;
}
.fl-cta {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #fff;
  background: var(--rose-gold);
  border: 1px solid var(--rose-gold);
  padding: 10px 16px;
  border-radius: 2px;
  cursor: pointer;
  text-decoration: none;
  transition: background-color .15s;
}
.fl-cta:hover { background: var(--rose-gold-hover, #D4A87A); color: #fff; }
.fl-cta-ghost {
  background: transparent;
  color: var(--rose-gold-deep, #B5855B);
}

/* ── Filter rail ───────────────────────────────────────────── */
.fl-bar {
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px; margin-top: 22px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border, #E8E0D3);
  flex-wrap: wrap;
}
.fl-fams {
  display: flex; flex-wrap: wrap; gap: 4px; align-items: center;
}
.fl-fam {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 6px 11px;
  border-radius: 2px;
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  text-decoration: none;
  transition: color .15s, border-color .15s, background-color .15s;
}
.fl-fam:hover { color: var(--text-primary, var(--espresso)); }
.fl-fam.is-active {
  color: var(--rose-gold-deep, #B5855B);
  border-color: var(--rose-gold);
  background: var(--rose-gold-tint, rgba(196, 149, 106, 0.08));
}

.fl-sort {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--text-muted);
}
.fl-sort select {
  font-family: var(--font-body); font-size: 13px;
  background: transparent;
  border: 0; border-bottom: 1px solid var(--border, #E8E0D3);
  color: var(--text-primary, var(--espresso));
  padding: 4px 16px 4px 4px;
  cursor: pointer;
  text-transform: none;
  letter-spacing: 0;
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--text-muted) 50%),
                    linear-gradient(135deg, var(--text-muted) 50%, transparent 50%);
  background-position: calc(100% - 8px) center, calc(100% - 3px) center;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}
.fl-sort select:focus { outline: 0; border-bottom-color: var(--rose-gold); }

/* ── Register (list) ───────────────────────────────────────── */
.fl-register { margin-top: 6px; }
.fl-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1.6fr) minmax(0, 1.4fr) auto;
  gap: 22px;
  align-items: center;
  padding: 22px 0;
  border-bottom: 1px solid var(--border, #E8E0D3);
  transition: background-color .15s;
}
.fl-row:hover { background: var(--rose-gold-tint, rgba(196, 149, 106, 0.04)); }
@media (max-width: 820px) {
  .fl-row {
    grid-template-columns: 48px 1fr;
    grid-template-areas:
      "vial name"
      "vial meta"
      "actions actions";
    gap: 10px 14px;
    padding: 18px 0;
  }
  .fl-row > .fl-vial { grid-area: vial; }
  .fl-row > .fl-name-wrap { grid-area: name; }
  .fl-row > .fl-meta { grid-area: meta; }
  .fl-row > .fl-actions { grid-area: actions; justify-content: flex-start; padding-top: 4px; }
}

/* ── Vial (role-tinted mini medallion) ─────────────────────── */
.fl-vial {
  --vial-tint: rgba(196, 149, 106, 0.20);
  --vial-glow: rgba(196, 149, 106, 0.30);
  width: 56px; height: 56px;
  border-radius: 50%;
  position: relative;
  background:
    radial-gradient(circle at 38% 32%, rgba(255, 255, 255, 0.55), transparent 55%),
    radial-gradient(circle at 60% 65%, var(--vial-tint), transparent 70%),
    var(--surface, #fff);
  border: 1px solid var(--border-strong, #D8CDB8);
  box-shadow: 0 6px 14px -8px var(--vial-glow), inset 0 -4px 10px -4px var(--vial-tint);
  display: grid; place-items: center;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 14px;
  color: var(--text-secondary);
  flex-shrink: 0;
}
.fl-vial[data-role="top"]  { --vial-tint: rgba(122, 154, 126, 0.24); --vial-glow: rgba(122, 154, 126, 0.40); }
.fl-vial[data-role="mid"]  { --vial-tint: rgba(200, 148, 62, 0.24); --vial-glow: rgba(200, 148, 62, 0.42); }
.fl-vial[data-role="base"] { --vial-tint: rgba(139, 107, 130, 0.24); --vial-glow: rgba(139, 107, 130, 0.40); }
.fl-vial-pyramid {
  position: absolute;
  bottom: -2px; left: 50%;
  transform: translateX(-50%);
  display: flex; gap: 2px;
  height: 14px;
}
.fl-vial-pyramid > span {
  width: 6px;
  background: var(--sage);
  opacity: 0.85;
  border-radius: 1px 1px 0 0;
}
.fl-vial-pyramid > span:nth-child(2) { background: var(--amber); }
.fl-vial-pyramid > span:nth-child(3) { background: var(--plum); }

/* ── Name + concept line ──────────────────────────────────── */
.fl-name-wrap {
  display: flex; flex-direction: column; gap: 4px;
  min-width: 0;
}
.fl-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--text-primary, var(--espresso));
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .15s;
  align-self: flex-start;
  line-height: 1.1;
}
.fl-name:hover { border-bottom-color: var(--rose-gold); color: var(--text-primary, var(--espresso)); }
.fl-name .fl-fav {
  display: inline-block;
  margin-right: 6px;
  color: var(--rose-gold);
  font-style: normal;
  font-size: 0.8em;
}
.fl-concept {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── Meta column ───────────────────────────────────────────── */
.fl-meta {
  display: flex; flex-wrap: wrap; align-items: baseline;
  gap: 8px 14px;
  min-width: 0;
}
.fl-tag {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--rose-gold-deep, #B5855B);
  padding: 3px 8px;
  border: 1px solid var(--rose-gold-soft, rgba(196, 149, 106, 0.30));
  border-radius: 2px;
}
.fl-meta-row {
  display: flex; align-items: baseline; gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  font-feature-settings: "tnum" 1;
  letter-spacing: 0.04em;
  flex: 1 1 auto;
}
.fl-meta-pair {
  display: inline-flex; align-items: baseline; gap: 4px;
}
.fl-meta-label {
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-faint, #C2B8A8);
}
.fl-meta-value {
  color: var(--text-secondary);
  font-size: 12px;
}

/* ── Actions ───────────────────────────────────────────────── */
.fl-actions {
  display: flex; align-items: center; gap: 8px;
  flex-shrink: 0;
}
.fl-act {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border, #E8E0D3);
  padding: 6px 12px;
  border-radius: 2px;
  text-decoration: none;
  cursor: pointer;
}
.fl-act:hover { color: var(--rose-gold-deep, #B5855B); border-color: var(--rose-gold); }
.fl-act--danger:hover { color: var(--danger, #B85450); border-color: var(--danger, #B85450); }
.fl-act--primary {
  background: var(--rose-gold);
  border-color: var(--rose-gold);
  color: #fff;
}
.fl-act--primary:hover { background: var(--rose-gold-hover, #D4A87A); color: #fff; }

/* ── Empty state ──────────────────────────────────────────── */
.fl-empty {
  margin-top: 48px;
  padding: 80px 24px;
  text-align: center;
  border: 1px dashed var(--border, #E8E0D3);
}
.fl-empty-h {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 26px;
  color: var(--text-faint, #C2B8A8);
}
.fl-empty-sub {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-faint, #C2B8A8);
}
.fl-empty-cta {
  display: inline-block;
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #fff;
  background: var(--rose-gold);
  border: 1px solid var(--rose-gold);
  padding: 10px 16px;
  border-radius: 2px;
  text-decoration: none;
}
.fl-empty-cta:hover { background: var(--rose-gold-hover, #D4A87A); color: #fff; }

/* ── Pagination ───────────────────────────────────────────── */
.fl-pager {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 32px;
  padding-top: 18px;
  border-top: 1px solid var(--border, #E8E0D3);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.fl-pager-links { display: flex; gap: 4px; }
.fl-pager a, .fl-pager .fl-pager-cur {
  font-family: var(--font-mono);
  font-size: 10.5px;
  padding: 6px 10px;
  border: 1px solid var(--border, #E8E0D3);
  border-radius: 2px;
  color: var(--text-muted);
  text-decoration: none;
  letter-spacing: 0.16em;
}
.fl-pager a:hover { color: var(--rose-gold-deep, #B5855B); border-color: var(--rose-gold); }
.fl-pager .fl-pager-cur { background: var(--rose-gold-tint, rgba(196, 149, 106, 0.08)); color: var(--rose-gold-deep, #B5855B); border-color: var(--rose-gold); }

/* ── Dark-mode parity ──────────────────────────────────────── */
[data-theme="dark"] .fl-vial { background: rgba(255, 255, 255, 0.03); }
[data-theme="dark"] .fl-row:hover { background: rgba(196, 149, 106, 0.06); }

/* ── Reduced motion ────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .fl-row { transition: none; }
  .fl-name { transition: none; }
  .fl-cta { transition: none; }
}