/* ===================== VOLUMETRIC CALCULATOR PAGE ===================== */

/* HERO */
.vc-hero {
  background: linear-gradient(135deg, #0a2540 0%, #1a56db 100%);
  padding: 80px 0;
}
.vc-hero__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}
.vc-hero__text h1 {
  color: #ffffff;
  font-size: 42px;
  font-weight: 800;
  margin: 0 0 16px 0;
  line-height: 1.2;
}
.vc-hero__text p {
  color: rgba(255,255,255,0.85);
  font-size: 17px;
  line-height: 1.7;
  max-width: 480px;
  margin: 0;
}
.vc-hero__image {
  flex-shrink: 0;
  width: 260px;
}
.vc-hero__image img {
  width: 100%;
  height: auto;
}

/* CALCULATOR SECTION */
.vc-calculator {
  background: #f8fafc;
  padding: 70px 40px;
}
.vc-calculator__card {
  max-width: 900px;
  margin: 0 auto;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 4px 32px rgba(0,0,0,0.10);
  padding: 48px;
  display: flex;
  gap: 48px;
}
.vc-calculator__inputs {
  flex: 1;
}
.vc-calculator__inputs h2,
.vc-calculator__results h2 {
  font-size: 18px;
  font-weight: 700;
  color: #0a2540;
  margin: 0 0 24px 0;
}
.vc-field {
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
}
.vc-field label {
  font-size: 14px;
  font-weight: 600;
  color: #374151;
  margin-bottom: 6px;
}
.vc-field input,
.vc-field select {
  border: 1.5px solid #cbd5e1;
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 15px;
  color: #1e293b;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
  box-sizing: border-box;
}
.vc-field input:focus,
.vc-field select:focus {
  border-color: #1a56db;
  box-shadow: 0 0 0 3px rgba(26,86,219,0.15);
}
.vc-btn {
  width: 100%;
  background: #1a56db;
  color: #ffffff;
  border: none;
  border-radius: 8px;
  padding: 14px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  margin-top: 8px;
  transition: background 0.2s;
}
.vc-btn:hover {
  background: #1446b8;
}
.vc-error {
  color: #dc2626;
  font-size: 14px;
  margin-top: 10px;
}

/* RESULTS */
.vc-calculator__results {
  flex: 1;
  display: flex;
  flex-direction: column;
}
.vc-result-box {
  background: #eff6ff;
  border-radius: 12px;
  padding: 24px;
  text-align: center;
  margin-bottom: 16px;
}
.vc-result-box span {
  display: block;
  font-size: 48px;
  font-weight: 800;
  color: #1a56db;
  line-height: 1;
  margin-bottom: 8px;
}
.vc-result-box label {
  font-size: 14px;
  color: #64748b;
}
.vc-formula-note {
  font-size: 13px;
  color: #94a3b8;
  text-align: center;
  margin-top: auto;
}

/* CONTENT SECTIONS */
.vc-content {
  padding: 70px 40px;
}
.vc-bg-light { background: #f8fafc; }
.vc-bg-white { background: #ffffff; }
.vc-content__inner {
  max-width: 800px;
  margin: 0 auto;
}
.vc-content__inner h2 {
  font-size: 30px;
  font-weight: 700;
  color: #0a2540;
  margin: 0 0 20px 0;
}
.vc-content__inner p {
  font-size: 16px;
  color: #4b5563;
  line-height: 1.8;
  margin: 0 0 16px 0;
}
.vc-formula-box {
  background: #eff6ff;
  border-left: 4px solid #1a56db;
  border-radius: 8px;
  padding: 20px 28px;
  font-size: 18px;
  font-weight: 700;
  color: #1a56db;
  margin: 24px 0;
}
.vc-example-box {
  background: #f0fdf4;
  border-left: 4px solid #22c55e;
  border-radius: 8px;
  padding: 18px 24px;
  font-size: 15px;
  color: #166534;
  margin-top: 20px;
}

/* TIPS LIST */
.vc-tips-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.vc-tips-list li {
  padding: 14px 0 14px 36px;
  border-bottom: 1px solid #f1f5f9;
  font-size: 16px;
  color: #4b5563;
  line-height: 1.7;
  position: relative;
}
.vc-tips-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 18px;
  width: 20px;
  height: 20px;
  background: #1a56db;
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='white'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd'/%3E%3C/svg%3E");
  background-size: cover;
}

/* CTA BANNER */
.vc-cta-wrapper {
  background: #ffffff;
  padding: 70px 60px;
}
.vc-cta {
  background: linear-gradient(135deg, #0a2540 0%, #1a56db 100%);
  border-radius: 20px;
  padding: 70px 40px;
  text-align: center;
}
.vc-cta h2 {
  color: #ffffff;
  font-size: 36px;
  font-weight: 800;
  margin: 0 0 12px 0;
}
.vc-cta p {
  color: rgba(255,255,255,0.85);
  font-size: 17px;
  margin: 0 0 28px 0;
}
.vc-cta-btn {
  display: inline-block;
  background: #ffffff;
  color: #1a56db;
  font-weight: 700;
  font-size: 16px;
  padding: 14px 40px;
  border-radius: 50px;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}
.vc-cta-btn:hover {
  background: #1a56db;
  color: #ffffff;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .vc-hero__inner { flex-direction: column; padding: 0 20px; }
  .vc-hero__image { display: none; }
  .vc-hero__text h1 { font-size: 30px; }
  .vc-calculator__card { flex-direction: column; padding: 28px; gap: 28px; }
  .vc-calculator { padding: 40px 20px; }
  .vc-content { padding: 48px 20px; }
  .vc-cta-wrapper { padding: 40px 20px; }
  .vc-cta { padding: 48px 24px; }
  .vc-cta h2 { font-size: 26px; }
}