/* C/C++ — ТЕРАКОР (systems / steel theme) */

.cpp-page {
  --c-accent: #00599c;
  --cpp-accent: #f34b1d;
  --sys-dark: #0f1419;
  --sys-steel: #3d4f5f;
  --sys-highlight: #7ec8e3;
}

.cpp-page .hero-section {
  background:
    linear-gradient(135deg, rgba(0, 89, 156, 0.2) 0%, transparent 45%),
    linear-gradient(225deg, rgba(243, 75, 29, 0.15) 0%, transparent 40%),
    linear-gradient(165deg, var(--sys-dark) 0%, #141c24 50%, #1a2430 100%);
  position: relative;
  overflow: hidden;
}

.cpp-page .hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(255, 255, 255, 0.015) 2px,
    rgba(255, 255, 255, 0.015) 4px
  );
  pointer-events: none;
}

.cpp-page .badge-cpp {
  background: linear-gradient(90deg, var(--c-accent), var(--cpp-accent));
  color: #fff;
  font-weight: 800;
  padding: 0.35rem 0.85rem;
  border-radius: 4px;
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  letter-spacing: 0.03em;
}

.cpp-page .hero-accent {
  color: var(--sys-highlight);
}

.cpp-page .value-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.9rem;
  margin: 0.2rem;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(126, 200, 227, 0.3);
  color: #e8eef2;
}

.cpp-page .value-pill i {
  color: var(--sys-highlight);
}

.cpp-page .price-hero-card {
  background: rgba(255, 255, 255, 0.97);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  border-top: 4px solid;
  border-image: linear-gradient(90deg, var(--c-accent), var(--cpp-accent)) 1;
}

.cpp-page .price-value {
  font-size: 2.75rem;
  font-weight: 800;
  background: linear-gradient(90deg, var(--c-accent), var(--cpp-accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.cpp-page .cpp-focus-banner {
  background: linear-gradient(135deg, #eef4f8 0%, #fff5f2 100%);
  border: 1px solid #d8e4ec;
  border-radius: 12px;
  padding: 2rem;
}

.cpp-page .cpp-focus-banner .focus-grade {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--sys-dark);
}

.cpp-page .icon-circle--cpp {
  background: linear-gradient(135deg, var(--c-accent), var(--cpp-accent));
  color: #fff;
  border-radius: 10px;
}

.cpp-page .tech-stack-cpp span {
  display: inline-block;
  margin: 0.25rem;
  padding: 0.35rem 0.75rem;
  border-radius: 4px;
  font-size: 0.82rem;
  font-weight: 600;
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  background: #fff;
  color: var(--sys-dark);
  border: 1px solid #d8e4ec;
}

.cpp-page .tech-stack-cpp .stack-highlight {
  background: linear-gradient(135deg, var(--c-accent), var(--cpp-accent));
  color: #fff;
  border-color: transparent;
}

/* Stack program — C блок + C++ блок */
.cpp-stack-program {
  max-width: 720px;
  margin: 0 auto 2.5rem;
  position: relative;
}

.cpp-stack-program::before {
  content: "";
  position: absolute;
  left: 28px;
  top: 40px;
  bottom: 40px;
  width: 3px;
  background: linear-gradient(180deg, var(--c-accent), var(--cpp-accent));
  border-radius: 2px;
}

.cpp-stack-block {
  margin-bottom: 2rem;
}

.cpp-stack-block-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-left: 0.5rem;
}

.cpp-lang-badge {
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  font-weight: 800;
  font-size: 0.85rem;
  padding: 0.35rem 0.75rem;
  border-radius: 4px;
  color: #fff;
}

.cpp-lang-badge--c {
  background: var(--c-accent);
}

.cpp-lang-badge--cpp {
  background: var(--cpp-accent);
}

.cpp-stack-block-header span:last-child {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--sys-steel);
}

.cpp-stack-item {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 0.85rem;
  position: relative;
}

.cpp-stack-marker {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  font-weight: 800;
  font-size: 0.95rem;
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  color: #fff;
  z-index: 1;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.cpp-stack-item--c .cpp-stack-marker {
  background: var(--c-accent);
}

.cpp-stack-item--cpp .cpp-stack-marker {
  background: var(--cpp-accent);
}

.cpp-stack-card {
  flex: 1;
  background: #fff;
  border: 1px solid #d8e4ec;
  border-radius: 10px;
  padding: 1rem 1.25rem;
  box-shadow: 0 6px 20px rgba(15, 20, 25, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cpp-stack-card:hover {
  transform: translateX(6px);
  box-shadow: 0 10px 28px rgba(0, 89, 156, 0.12);
}

.cpp-stack-card h4 {
  font-size: 1rem;
  font-weight: 800;
  color: var(--sys-dark);
  margin: 0 0 0.25rem;
}

.cpp-stack-card p {
  font-size: 0.85rem;
  color: #5a6a78;
  margin: 0;
}

.cpp-stack-card .mod-hours {
  display: inline-block;
  margin-top: 0.4rem;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--sys-steel);
}

.cpp-page .module-hours-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  background: #eef4f8;
  color: var(--c-accent);
  margin-left: 0.5rem;
}

.cpp-page .program-accordion .accordion-item {
  border: 1px solid #d8e4ec;
  border-radius: 10px !important;
  margin-bottom: 0.85rem;
  overflow: hidden;
}

.cpp-page .program-accordion .accordion-button {
  font-weight: 700;
  color: var(--sys-dark);
  background: #f8fafc;
  padding: 1.1rem 1.25rem;
}

.cpp-page .program-accordion .accordion-button:not(.collapsed) {
  background: linear-gradient(90deg, color-mix(in srgb, var(--c-accent) 6%, #fff), color-mix(in srgb, var(--cpp-accent) 4%, #fff));
  box-shadow: none;
}

.cpp-page .lang-tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 0.15rem 0.45rem;
  border-radius: 3px;
  margin-right: 0.4rem;
  vertical-align: middle;
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
}

.cpp-page .lang-tag--c {
  background: color-mix(in srgb, var(--c-accent) 15%, #fff);
  color: var(--c-accent);
}

.cpp-page .lang-tag--cpp {
  background: color-mix(in srgb, var(--cpp-accent) 12%, #fff);
  color: var(--cpp-accent);
}

.cpp-page .program-accordion .topic-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.cpp-page .program-accordion .topic-list li {
  display: flex;
  gap: 0.65rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid #eef2f6;
  font-size: 0.95rem;
  color: #4a5568;
  line-height: 1.5;
}

.cpp-page .program-accordion .topic-list li:last-child {
  border-bottom: none;
}

.cpp-page .program-accordion .topic-list li i {
  margin-top: 0.2rem;
  flex-shrink: 0;
  color: var(--c-accent);
}

.cpp-page .program-accordion .topic-list li.topic-practice i {
  color: var(--cpp-accent);
}

.cpp-page .program-accordion .topic-list li.topic-practice {
  font-weight: 600;
  color: var(--sys-dark);
}

.cpp-page .project-card-cpp {
  background: linear-gradient(135deg, var(--sys-dark), color-mix(in srgb, var(--c-accent) 40%, #0f1419));
  color: #e8eef2;
  border-radius: 12px;
  padding: 2rem;
  border: 1px solid rgba(126, 200, 227, 0.25);
}

.cpp-page .project-card-cpp h3,
.cpp-page .project-card-cpp p,
.cpp-page .project-card-cpp li {
  color: rgba(232, 238, 242, 0.92) !important;
}

.cpp-page .pricing-card-cpp .card-header {
  background: linear-gradient(90deg, var(--c-accent), var(--cpp-accent));
}

.cpp-page #signup {
  background: linear-gradient(165deg, var(--sys-dark), color-mix(in srgb, var(--c-accent) 35%, #0f1419));
}

.cpp-page .advantage-card-bright {
  border-radius: 10px;
  border: 1px solid #d8e4ec;
  border-top: 3px solid var(--c-accent);
}

.cpp-page .icon-circle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  margin-bottom: 1rem;
  font-size: 1.35rem;
}

@media (max-width: 575.98px) {
  .cpp-stack-program::before {
    left: 20px;
  }

  .cpp-stack-marker {
    width: 40px;
    height: 40px;
    font-size: 0.8rem;
  }
}