/* --- Main Tool Layout --- */
.tool-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--space-8);
  align-items: start;
}

.tool-main {
  min-width: 0;
  width: 100%;
}

main { padding: 0; }
h1 { font-family: var(--font-display); font-size: clamp(1.75rem, 5vw, 2.5rem); font-weight: 800; letter-spacing: -.02em; margin-bottom: .5rem; line-height: 1.1; }
.desc { color: var(--color-text-muted); font-size: 1rem; margin-bottom: 2rem; }

/* --- Form Styles --- */
.form-group { margin-bottom: 1.25rem; }
label { display: block; font-weight: 700; font-size: 1rem; margin-bottom: .35rem; }
input, select {
  width: 100%; height: 52px; padding: 0 1rem; font-size: 1rem;
  border: 1.5px solid var(--color-border); border-radius: var(--radius-lg);
  background: var(--color-surface-2); color: var(--color-text);
  transition: border-color .15s, box-shadow .15s;
  appearance: none;
}
input:focus, select:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(1, 105, 111, 0.15); }
.input-hint { font-size: .8rem; color: var(--color-text-muted); margin-top: .25rem; display: block; }

.grid-select { display: grid; grid-template-columns: 1fr auto 1fr; gap: .75rem; align-items: flex-end; }
.btn-swap { 
  height: 52px; width: 52px; display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-full); border: 1px solid var(--color-border);
  background: var(--color-surface); cursor: pointer; color: var(--color-text-muted);
  transition: all var(--transition);
}
.btn-swap:hover { background: var(--color-surface-dynamic); color: var(--color-primary); transform: rotate(180deg); }

.btn-calculate {
  width: 100%; height: 56px; background: var(--color-primary); color: white;
  font-size: 1.1rem; font-weight: 700; border-radius: var(--radius-full);
  border: none; cursor: pointer; margin-top: 1.5rem;
  transition: background .15s, transform .1s;
}
.btn-calculate:hover { background: var(--color-primary-hover); }
.btn-calculate:active { transform: scale(.98); }

/* --- Popular Pairs (Pills) --- */
#popular-pairs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}
.pill-btn {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.pill-btn:hover {
  background: var(--color-surface-dynamic);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
}
.pill-btn:active {
  transform: translateY(0);
}

/* --- Results --- */
#result { display: none; margin-top: 0; }
.result-card { 
  background: var(--color-surface); 
  padding: 1.5rem 0 0;
  margin-top: 1.5rem;
  border-top: 1px solid var(--color-divider);
}
.result-label { font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; color: var(--color-text-muted); margin-bottom: .5rem; }
.result-main { font-size: clamp(2rem, 5vw, 3rem); font-weight: 800; color: var(--color-primary); font-variant-numeric: tabular-nums; line-height: 1.1; }
.result-secondary { font-size: 1rem; color: var(--color-text-muted); margin-top: .75rem; border-top: 1px solid var(--color-divider); padding-top: .75rem; }

/* --- Chart --- */
.fx-chart-section { margin-top: 1.25rem; }
.fx-chart-caption {
  font-size: 0.7rem;
  color: var(--color-text-faint);
  margin: 0 0 0.5rem;
  line-height: 1.35;
}
.chart-container { 
  margin-top: 0; 
  height: 180px; 
  width: 100%; 
  position: relative;
}
#sparkline { width: 100%; height: 100%; display: block; }

/* --- Affiliate --- */
.affiliate-block { margin-top: 0; display: none; }
.affiliate-badge {
  display: flex; align-items: center; gap: .75rem; padding: .75rem 1rem;
  background: var(--color-surface-2); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); text-decoration: none; color: inherit;
  font-size: .875rem; margin-bottom: .5rem; transition: border-color .15s;
}
.affiliate-badge:hover { border-color: var(--color-primary); }
.badge-content { flex: 1; }
.badge-cta { font-weight: 700; color: var(--color-primary); font-size: .8rem; }

/* --- Ad Sidebar --- */
.ad-sidebar { display: flex; flex-direction: column; gap: var(--space-6); }
.ad-box { background: var(--color-surface-offset); border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: var(--space-4); text-align: center; }
.ad-box-label { font-size: 10px; color: var(--color-text-faint); text-transform: uppercase; margin-bottom: var(--space-3); font-weight: 700; }
.ad-box-slot { min-height: 250px; display: flex; align-items: center; justify-content: center; color: var(--color-text-faint); font-size: 12px; border: 1px dashed var(--color-border); border-radius: var(--radius-md); }

@media (max-width: 900px) {
  .tool-layout { grid-template-columns: 1fr; gap: var(--space-8); }
  .tool-main { width: 100%; }
  .ad-sidebar { display: none; }
  .grid-select { grid-template-columns: 1fr; gap: .5rem; }
  .btn-swap { margin: 0 auto; transform: rotate(90deg); }
  .btn-swap:hover { transform: rotate(270deg); }
}

/* Footer responsive - GLOBAL */
@media (max-width: 600px) {
  footer > div > div:first-child { flex-direction: column !important; }
  footer nav { gap: 1.5rem !important; }
}