/* ═══════════════════════════════════════════════════════════════════
   Supply Intelligence & Opportunity Board – TradeForge Supply Co.
   ═══════════════════════════════════════════════════════════════════ */

/* Sub-navigation */
.si-subnav{
  display:flex;
  gap:6px;
  flex-wrap:wrap;
  padding:16px 0;
  border-bottom:1px solid rgba(181,183,185,.10);
  margin-bottom:8px;
}
.si-subnav a{
  font-size:12px;
  font-weight:600;
  color:var(--muted);
  padding:6px 12px;
  border:1px solid rgba(181,183,185,.12);
  border-radius:999px;
  transition:border-color .15s, color .15s;
}
.si-subnav a:hover{
  color:#fff;
  border-color:rgba(140,106,62,.55);
}

/* Section spacing */
.si-section{
  padding:48px 0 24px;
  border-bottom:1px solid rgba(181,183,185,.10);
}
.si-section:last-of-type{
  border-bottom:none;
}

/* Section headers */
.si-section-header{
  margin-bottom:24px;
}
.si-section-header h2{
  margin:6px 0 10px;
  font-size:26px;
  color:#fff;
}

/* Market insight cards */
.si-insight-card{
  display:flex;
  flex-direction:column;
}
.si-insight-label{
  font-size:11px;
  font-weight:700;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--bronze);
  margin:0 0 4px;
}

/* Opportunity cards */
.si-opportunity-card{
  display:flex;
  flex-direction:column;
}
.si-opp-category{
  font-size:11px;
  font-weight:700;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--bronze);
  margin:0 0 4px;
}
.si-opp-btn{
  margin-top:auto;
  align-self:flex-start;
}

/* Notice card */
.si-notice{
  background:rgba(140,106,62,.08);
  border-color:rgba(140,106,62,.25);
}
.si-notice p{
  margin:0;
  color:var(--muted);
  font-size:14px;
  line-height:1.55;
}

/* Guide cards */
.si-guides-list{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.si-guide-card h3{
  color:#fff;
}
.si-guide-card ul{
  margin:10px 0 0;
  padding-left:18px;
  color:var(--muted);
  line-height:1.65;
}
.si-guide-card ul li{
  margin-bottom:4px;
}

/* Checkbox grid for deal alerts */
.si-checkbox-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:6px 14px;
}
.si-checkbox{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text);
  cursor:pointer;
}
.si-checkbox input[type="checkbox"]{
  accent-color:var(--bronze);
  width:16px;
  height:16px;
  flex-shrink:0;
}

/* Steps (sourcing request how-it-works) */
.si-steps{
  display:flex;
  flex-direction:column;
  gap:16px;
  margin-top:8px;
}
.si-step{
  display:flex;
  align-items:flex-start;
  gap:14px;
}
.si-step-num{
  width:32px;
  height:32px;
  flex-shrink:0;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:rgba(140,106,62,.18);
  border:1px solid rgba(140,106,62,.40);
  color:var(--bronze);
  font-weight:800;
  font-size:14px;
}
.si-step strong{
  color:#fff;
  font-size:14px;
}

/* Bridge / positioning card */
.si-bridge-card{
  background:rgba(140,106,62,.06);
  border-color:rgba(140,106,62,.20);
}

/* CTA row spacing fix */
.cta-row{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  align-items:center;
}

/* ── Responsive ─────────────────────────────────────────────────── */
@media (max-width:900px){
  .si-section{
    padding:32px 0 18px;
  }
  .si-section-header h2{
    font-size:22px;
  }
  .si-checkbox-grid{
    grid-template-columns:1fr;
  }
  .si-subnav{
    gap:4px;
  }
  .si-subnav a{
    font-size:11px;
    padding:5px 9px;
  }
}

@media (max-width:520px){
  .si-checkbox-grid{
    grid-template-columns:1fr;
  }
}

/* ── Mobile Field Optimization ── */
@media (max-width:900px){
  /* Touch targets — min 44px for interactive elements */
  .si-subnav a{
    min-height:44px;
    display:inline-flex;
    align-items:center;
    padding:10px 16px;
    font-size:13px;
  }
  .si-opp-btn{
    min-height:44px;
    padding:10px 18px;
    font-size:14px;
  }
  .si-checkbox{
    min-height:44px;
    font-size:14px;
    gap:10px;
  }
  .si-checkbox input[type="checkbox"]{
    width:20px;
    height:20px;
  }
  .si-step-num{
    width:36px;
    height:36px;
    font-size:15px;
  }
  .cta-row .btn,
  .cta-row a{
    min-height:44px;
    display:inline-flex;
    align-items:center;
  }

  /* Readable text for outdoor use */
  .si-section-header h2{
    font-size:22px;
  }
  .si-insight-label,
  .si-opp-category{
    font-size:12px;
  }
  .si-step strong{
    font-size:15px;
  }
  .si-notice p{
    font-size:15px;
  }
  .si-guide-card ul{
    font-size:14px;
    line-height:1.7;
  }

  /* Card and item spacing */
  .si-section{
    padding:28px 0 16px;
  }
  .si-guides-list{
    gap:12px;
  }
  .si-steps{
    gap:14px;
  }

  /* Full-width buttons on small screens */
  .cta-row{
    flex-direction:column;
  }
  .cta-row .btn,
  .cta-row a{
    width:100%;
    justify-content:center;
    text-align:center;
  }
}