.gc-factor-grid{display:grid;grid-template-columns:1fr;gap:10px;margin-top:15px}
@media(min-width:600px){.gc-factor-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:900px){.gc-factor-grid{grid-template-columns:repeat(3,1fr)}}
.gc-factor-card{background:var(--bg);border:1.5px solid var(--border);border-radius:var(--radius-sm);padding:12px 14px;transition:border-color var(--transition)}
.gc-factor-card:hover{border-color:var(--primary)}
.gc-factor-num{font-size:1.2rem;font-weight:800;color:var(--primary);margin-bottom:8px}
.gc-factor-row{font-size:.82rem;color:var(--subtext);line-height:1.6;margin-bottom:4px}
.gc-factor-label{font-weight:700;color:var(--text)}
.gc-factor-list{color:var(--subtext);word-break:break-all}


/* ============================================================
   GCF CALCULATOR — Enhanced Styles
   ============================================================ */

.gcf-wrap {
  display: flex;
  flex-direction: column;
  gap: 18px;
}


.gcf-input {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  background: var(--card);
  transition: border-color .2s ease, box-shadow .2s ease;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  resize: vertical;
  min-height: 72px;
}

.gcf-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}

.gcf-input::placeholder {
  color: var(--border);
  font-weight: 400;
  font-size: .9rem;
}

.gcf-hint {
  font-size: .72rem;
  color: var(--subtext);
  opacity: .7;
  margin-top: -8px;
}


/* Presets */
.gcf-presets {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  align-items: center;
}

.gcf-preset-label {
  font-size: .72rem;
  font-weight: 700;
  color: var(--subtext);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-right: 4px;
}

.gcf-preset {
  padding: 5px 12px;
  border-radius: 6px;
  font-size: .75rem;
  font-weight: 700;
  cursor: pointer;
  transition: all .2s ease;
  background: var(--bg);
  color: var(--subtext);
  border: 1.5px solid var(--border);
  font-family: var(--system-fonts);
}

.gcf-preset:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateY(-1px);
}

.gcf-preset:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}


/* Result Card */
.gcf-result {
  padding: 22px 20px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1.5px solid var(--border);
  transition: all .35s cubic-bezier(.4,0,.2,1);
  transform-origin: top center;
}

.gcf-result.hidden { display: none; }

.gcf-result.gcf-result--visible {
  animation: pctSlideDown .35s cubic-bezier(.4,0,.2,1);
}


.gcf-result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 8px;
  flex-wrap: wrap;
}

.gcf-result-badge {
  font-size: .6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(37,99,235,.1);
  color: var(--primary);
  border: 1px solid rgba(37,99,235,.15);
}

.gcf-result-label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--subtext);
  flex: 1;
  text-align: left;
}

.gcf-result-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}


.gcf-copy-btn {
  font-size: .68rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 6px;
  background: var(--card);
  color: var(--subtext);
  border: 1.5px solid var(--border);
  cursor: pointer;
  transition: all .2s ease;
  font-family: var(--system-fonts);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.gcf-copy-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.gcf-copy-btn--copied {
  background: var(--success) !important;
  color: #fff !important;
  border-color: var(--success) !important;
}


.gcf-copy-btn-mini {
  font-size: .6rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 6px;
  background: transparent;
  color: var(--subtext);
  border: 1.5px solid var(--border);
  cursor: pointer;
  transition: all .2s ease;
  font-family: var(--system-fonts);
  white-space: nowrap;
  margin-top: 6px;
}

.gcf-copy-btn-mini:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}


/* Result Grid */
.gcf-result-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 14px;
}

@media (max-width: 600px) {
  .gcf-result-grid { grid-template-columns: 1fr; }
}


.gcf-result-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 16px 10px;
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color .2s ease;
}

.gcf-result-item:hover { border-color: var(--primary); }

.gcf-result-item--gcf { border-top: 4px solid var(--primary); }

.gcf-result-item--lcm { border-top: 4px solid var(--accent); }

.gcf-result-item--count { border-top: 4px solid var(--success); }


.gcf-result-item-label {
  font-size: .65rem;
  font-weight: 700;
  color: var(--subtext);
  text-transform: uppercase;
  letter-spacing: .04em;
}

.gcf-result-item-val {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
  word-break: break-word;
}

.gcf-result-item--gcf .gcf-result-item-val { color: var(--primary); }

.gcf-result-item--lcm .gcf-result-item-val { color: var(--accent); }

.gcf-result-item--count .gcf-result-item-val { color: var(--success); font-size: 1.2rem; }


/* Formula */
.gcf-result-formula {
  font-size: .85rem;
  color: var(--subtext);
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  background: var(--card);
  padding: 10px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  margin-bottom: 14px;
  text-align: center;
}


/* Steps */
.gcf-steps {
  margin-bottom: 14px;
}

.gcf-steps-title {
  font-size: .78rem;
  font-weight: 700;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: 8px;
}

.gcf-steps-content {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.gcf-step {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 12px;
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .85rem;
  color: var(--subtext);
  line-height: 1.5;
}

.gcf-step-num {
  width: 24px;
  height: 24px;
  min-width: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  font-size: .72rem;
  font-weight: 800;
  flex-shrink: 0;
}

.gcf-step strong { color: var(--text); }

.gcf-step-sub {
  font-size: .82rem;
  color: var(--subtext);
  padding: 4px 12px 4px 44px;
  line-height: 1.5;
}

.gcf-step-sub strong { color: var(--primary); }


/* Factor Cards */
.gcf-factor-section { margin-bottom: 14px; }

.gcf-factor-section.hidden { display: none; }

.gcf-factor-title {
  font-size: .78rem;
  font-weight: 700;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: 8px;
}

.gcf-factor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 8px;
}

.gcf-factor-card {
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  transition: border-color .2s ease;
}

.gcf-factor-card:hover { border-color: var(--primary); }

.gcf-factor-num {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 6px;
}

.gcf-factor-row {
  font-size: .78rem;
  color: var(--subtext);
  line-height: 1.5;
  margin-bottom: 3px;
  word-break: break-word;
}

.gcf-factor-lbl {
  font-weight: 700;
  color: var(--text);
}


/* Bar Chart */
.gcf-bar-chart {
  padding: 14px 16px;
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  animation: pctSlideDown .35s cubic-bezier(.4,0,.2,1);
}

.gcf-bar-chart.hidden { display: none; }

.gcf-bar-title {
  font-size: .72rem;
  font-weight: 700;
  color: var(--subtext);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: 10px;
  text-align: center;
}

.gcf-bar-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.gcf-bar-row:last-child { margin-bottom: 0; }

.gcf-bar-label {
  font-size: .78rem;
  font-weight: 700;
  color: var(--text);
  min-width: 50px;
  text-align: right;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
}

.gcf-bar-track {
  flex: 1;
  height: 16px;
  background: var(--bg);
  border-radius: 99px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.gcf-bar-fill {
  display: block;
  height: 100%;
  border-radius: 99px;
  transition: width .6s cubic-bezier(.4,0,.2,1);
  min-width: 0;
}

.gcf-bar-fill--c0 { background: linear-gradient(90deg, #2563eb, #3b82f6); }

.gcf-bar-fill--c1 { background: linear-gradient(90deg, #22c55e, #4ade80); }

.gcf-bar-fill--c2 { background: linear-gradient(90deg, #f59e0b, #fbbf24); }

.gcf-bar-fill--c3 { background: linear-gradient(90deg, #ef4444, #f87171); }

.gcf-bar-fill--c4 { background: linear-gradient(90deg, #8b5cf6, #a78bfa); }

.gcf-bar-fill--c5 { background: linear-gradient(90deg, #ec4899, #f472b6); }

.gcf-bar-fill--c6 { background: linear-gradient(90deg, #14b8a6, #2dd4bf); }

.gcf-bar-fill--c7 { background: linear-gradient(90deg, #f97316, #fb923c); }

.gcf-bar-fill--c8 { background: linear-gradient(90deg, #6366f1, #818cf8); }

.gcf-bar-fill--c9 { background: linear-gradient(90deg, #84cc16, #a3e635); }

.gcf-bar-val {
  font-size: .72rem;
  font-weight: 600;
  color: var(--subtext);
  min-width: 42px;
  text-align: right;
}


/* Error */
.gcf-result-error {
  display: none;
  margin-top: 10px;
  padding: 10px 14px;
  background: rgba(239,68,68,.08);
  border: 1px solid rgba(239,68,68,.2);
  border-radius: var(--radius-sm);
  font-size: .85rem;
  color: var(--error);
  text-align: left;
}

.gcf-result-error--visible {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.gcf-result-error--visible::before {
  content: '!';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  min-width: 20px;
  background: var(--error);
  color: #fff;
  border-radius: 50%;
  font-size: .75rem;
  font-weight: 800;
}

.gcf-result-error.hidden { display: none; }


/* Dark mode */
[data-theme="dark"] .gcf-result { background: var(--card); }

[data-theme="dark"] .gcf-result-item { background: var(--bg); }

[data-theme="dark"] .gcf-result-formula { background: var(--bg); }

[data-theme="dark"] .gcf-bar-chart { background: var(--bg); }

[data-theme="dark"] .gcf-bar-track { background: var(--card); }

[data-theme="dark"] .gcf-factor-card { background: var(--bg); }

[data-theme="dark"] .gcf-step { background: var(--bg); }

[data-theme="dark"] .gcf-input { background: var(--bg); }

[data-theme="dark"] .gcf-copy-btn { background: var(--bg); }

[data-theme="dark"] .gcf-preset { background: var(--card); }


/* Mobile */
@media (max-width: 480px) {
  .gcf-result { padding: 14px 12px; }
  .gcf-result-item-val { font-size: 1.2rem; }
  .gcf-result-grid { gap: 8px; }
  .gcf-result-item { padding: 12px 8px; }
  .gcf-preset-label { display: none; }
  .gcf-bar-chart { padding: 10px; }
  .gcf-bar-label { font-size: .7rem; min-width: 40px; }
  .gcf-bar-val { font-size: .65rem; min-width: 34px; }
  .gcf-step { font-size: .8rem; padding: 6px 10px; }
  .gcf-step-sub { padding: 3px 10px 3px 36px; font-size: .78rem; }
  .gcf-step-num { width: 20px; height: 20px; min-width: 20px; font-size: .65rem; }
}