/* =========================================================
   ZACK PORTFOLIO
   EXPERTISE PAGE
   ========================================================= */

/* =========================================================
   HERO
   ========================================================= */

.expertise-hero {
  position: relative;

  min-height: 600px;

  display: flex;

  align-items: center;

  padding-top: 150px;
  padding-bottom: 100px;

  overflow: hidden;

  background: radial-gradient(
    circle at 75% 40%,
    rgba(56, 189, 248, 0.07),
    transparent 35%
  );
}

.expertise-hero::before {
  content: "";

  position: absolute;

  inset: 0;

  background-image:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);

  background-size: 60px 60px;

  mask-image: linear-gradient(to bottom, black, transparent);

  -webkit-mask-image: linear-gradient(to bottom, black, transparent);
}

.expertise-hero-content {
  position: relative;

  max-width: 900px;

  z-index: 1;
}

.expertise-hero-title {
  max-width: 850px;

  margin: 20px 0 25px;

  color: var(--color-white);

  font-family: var(--font-heading);

  font-size: clamp(3.2rem, 6vw, 5.5rem);

  font-weight: 700;

  line-height: 1;

  letter-spacing: -0.06em;
}

.expertise-hero-description {
  max-width: 680px;

  color: var(--color-text-muted);

  font-size: 1rem;

  line-height: 1.85;
}

.expertise-hero-actions {
  display: flex;

  flex-wrap: wrap;

  gap: 12px;

  margin-top: 32px;
}

/* =========================================================
   CORE EXPERTISE
   ========================================================= */

.core-expertise-section {
  padding-top: 110px;

  padding-bottom: 120px;
}

.core-expertise-grid {
  display: grid;

  grid-template-columns: repeat(2, minmax(0, 1fr));

  gap: 18px;

  margin-top: 55px;
}

.expertise-large-card {
  position: relative;

  min-height: 350px;

  padding: 30px;

  overflow: hidden;

  transition:
    transform var(--transition-normal),
    border-color var(--transition-normal);
}

.expertise-large-card::after {
  content: "";

  position: absolute;

  width: 220px;

  height: 220px;

  right: -100px;

  bottom: -100px;

  border-radius: 50%;

  background: radial-gradient(circle, rgba(56, 189, 248, 0.08), transparent);

  pointer-events: none;
}

.expertise-large-card:hover {
  transform: translateY(-6px);

  border-color: rgba(56, 189, 248, 0.18);
}

.expertise-card-header {
  display: flex;

  align-items: center;

  justify-content: space-between;

  margin-bottom: 45px;
}

.expertise-card-icon {
  width: 55px;

  height: 55px;

  display: flex;

  align-items: center;

  justify-content: center;

  border: 1px solid rgba(56, 189, 248, 0.18);

  border-radius: 14px;

  color: var(--color-primary);

  background: rgba(56, 189, 248, 0.05);

  font-family: var(--font-mono);

  font-size: 0.8rem;
}

.expertise-card-number {
  color: rgba(255, 255, 255, 0.25);

  font-family: var(--font-mono);

  font-size: 0.65rem;
}

.expertise-category {
  display: block;

  margin-bottom: 10px;

  color: var(--color-primary);

  font-family: var(--font-mono);

  font-size: 0.58rem;

  letter-spacing: 0.1em;
}

.expertise-card-content h3 {
  max-width: 430px;

  margin-bottom: 15px;

  color: var(--color-white);

  font-size: 1.45rem;

  line-height: 1.3;
}

.expertise-card-content p {
  max-width: 560px;

  margin-bottom: 25px;

  color: var(--color-text-muted);

  font-size: 0.83rem;

  line-height: 1.8;
}

.expertise-tags {
  display: flex;

  flex-wrap: wrap;

  gap: 7px;
}

.expertise-tags .badge {
  padding: 6px 9px;

  border: 1px solid rgba(255, 255, 255, 0.07);

  border-radius: 999px;

  color: var(--color-text-muted);

  background: rgba(255, 255, 255, 0.025);

  font-family: var(--font-mono);

  font-size: 0.56rem;
}

/* =========================================================
   DETAIL SECTIONS
   ========================================================= */

.expertise-detail-section {
  padding-top: 110px;

  padding-bottom: 110px;
}

.expertise-detail-grid {
  display: grid;

  grid-template-columns:
    minmax(280px, 0.8fr)
    minmax(0, 1.2fr);

  gap: 100px;

  align-items: start;
}

.expertise-detail-grid.reverse {
  grid-template-columns:
    minmax(0, 1.2fr)
    minmax(280px, 0.8fr);
}

.expertise-detail-grid.reverse .expertise-detail-heading {
  order: 2;
}

.expertise-detail-grid.reverse .expertise-detail-content {
  order: 1;
}

.expertise-detail-heading {
  position: sticky;

  top: 130px;
}

.expertise-detail-content {
  max-width: 700px;
}

.expertise-detail-content > p {
  margin-bottom: 35px;

  color: var(--color-text-muted);

  font-size: 0.95rem;

  line-height: 1.9;
}

.capability-list {
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}

.capability-item {
  display: grid;

  grid-template-columns: 50px 1fr;

  align-items: center;

  gap: 20px;

  padding: 18px 0;

  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.capability-item span {
  color: var(--color-primary);

  font-family: var(--font-mono);

  font-size: 0.6rem;
}

.capability-item strong {
  color: var(--color-white);

  font-size: 0.85rem;

  font-weight: 500;
}

/* =========================================================
   ARCHITECTURE
   ========================================================= */

.architecture-expertise-section {
  padding-top: 110px;

  padding-bottom: 120px;
}

.expertise-architecture {
  max-width: 900px;

  margin: 60px auto 0;
}

.architecture-expertise-layer {
  padding: 25px;

  border: 1px solid rgba(255, 255, 255, 0.08);

  border-radius: 16px;

  background: rgba(255, 255, 255, 0.015);
}

.architecture-expertise-label {
  display: block;

  margin-bottom: 16px;

  color: var(--color-primary);

  font-family: var(--font-mono);

  font-size: 0.58rem;

  letter-spacing: 0.1em;
}

.architecture-expertise-nodes {
  display: flex;

  flex-wrap: wrap;

  gap: 10px;
}

.architecture-expertise-node {
  min-width: 130px;

  padding: 14px 18px;

  text-align: center;

  border: 1px solid rgba(255, 255, 255, 0.07);

  border-radius: 10px;

  color: var(--color-text);

  background: rgba(255, 255, 255, 0.025);

  font-size: 0.72rem;
}

.architecture-ai-node {
  color: var(--color-primary);

  border-color: rgba(56, 189, 248, 0.22);

  background: rgba(56, 189, 248, 0.05);
}

.architecture-arrow {
  height: 50px;

  display: flex;

  align-items: center;

  justify-content: center;

  color: var(--color-primary);

  font-family: var(--font-mono);

  font-size: 1.1rem;
}

/* =========================================================
   TECHNOLOGY STACK
   ========================================================= */

.technology-section {
  padding-top: 110px;

  padding-bottom: 120px;
}

.technology-grid {
  display: grid;

  grid-template-columns: repeat(2, minmax(0, 1fr));

  gap: 16px;

  margin-top: 55px;
}

.technology-group {
  padding: 27px;

  border: 1px solid rgba(255, 255, 255, 0.07);

  border-radius: 16px;

  background: rgba(255, 255, 255, 0.015);
}

.technology-group-label {
  display: block;

  margin-bottom: 18px;

  color: var(--color-primary);

  font-family: var(--font-mono);

  font-size: 0.57rem;

  letter-spacing: 0.1em;
}

.technology-items {
  display: flex;

  flex-wrap: wrap;

  gap: 8px;
}

.technology-items span {
  padding: 8px 11px;

  border: 1px solid rgba(255, 255, 255, 0.07);

  border-radius: 8px;

  color: var(--color-text-muted);

  background: rgba(255, 255, 255, 0.02);

  font-family: var(--font-mono);

  font-size: 0.58rem;
}

/* =========================================================
   CTA
   ========================================================= */

.expertise-cta {
  padding-top: 90px;

  padding-bottom: 120px;
}

.expertise-cta-inner {
  position: relative;

  max-width: 1000px;

  min-height: 380px;

  display: flex;

  flex-direction: column;

  align-items: center;

  justify-content: center;

  margin-inline: auto;

  padding: 65px 40px;

  overflow: hidden;

  text-align: center;

  border: 1px solid rgba(56, 189, 248, 0.15);

  border-radius: 26px;

  background: linear-gradient(
    145deg,
    rgba(56, 189, 248, 0.05),
    rgba(129, 140, 248, 0.02)
  );
}

.expertise-cta-inner::before {
  content: "";

  position: absolute;

  width: 550px;

  height: 550px;

  top: 50%;

  left: 50%;

  transform: translate(-50%, -50%);

  border-radius: 50%;

  background: radial-gradient(
    circle,
    rgba(56, 189, 248, 0.09),
    transparent 70%
  );
}

.expertise-cta-inner > * {
  position: relative;

  z-index: 2;
}

.expertise-cta .section-title {
  margin-bottom: 18px;

  font-size: clamp(2.3rem, 4.5vw, 4rem);
}

.expertise-cta .section-description {
  max-width: 650px;

  margin: 0 auto 30px;

  color: var(--color-text-muted);

  line-height: 1.75;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 1000px) {
  .expertise-hero {
    padding-top: 130px;
  }

  .expertise-hero-title {
    font-size: clamp(3rem, 7vw, 4.5rem);
  }

  .expertise-detail-grid,
  .expertise-detail-grid.reverse {
    grid-template-columns: 1fr;

    gap: 45px;
  }

  .expertise-detail-grid.reverse .expertise-detail-heading {
    order: 1;
  }

  .expertise-detail-grid.reverse .expertise-detail-content {
    order: 2;
  }

  .expertise-detail-heading {
    position: static;
  }
}

@media (max-width: 768px) {
  .expertise-hero {
    min-height: auto;

    padding-top: 115px;

    padding-bottom: 80px;
  }

  .expertise-hero-title {
    font-size: clamp(2.6rem, 9vw, 4rem);
  }

  .core-expertise-grid {
    grid-template-columns: 1fr;

    margin-top: 40px;
  }

  .expertise-large-card {
    min-height: auto;
  }

  .technology-grid {
    grid-template-columns: 1fr;

    margin-top: 40px;
  }

  .architecture-expertise {
    margin-top: 40px;
  }
}

@media (max-width: 600px) {
  .expertise-hero {
    padding-top: 100px;

    padding-bottom: 65px;
  }

  .expertise-hero-title {
    font-size: 2.35rem;

    letter-spacing: -0.05em;
  }

  .expertise-hero-description {
    font-size: 0.86rem;
  }

  .expertise-hero-actions {
    flex-direction: column;

    align-items: stretch;

    max-width: 290px;
  }

  .expertise-hero-actions .btn {
    width: 100%;
  }

  .core-expertise-section,
  .expertise-detail-section,
  .architecture-expertise-section,
  .technology-section {
    padding-top: 70px;

    padding-bottom: 75px;
  }

  .expertise-large-card {
    padding: 23px;
  }

  .expertise-card-header {
    margin-bottom: 35px;
  }

  .expertise-card-icon {
    width: 48px;

    height: 48px;
  }

  .expertise-card-content h3 {
    font-size: 1.2rem;
  }

  .expertise-card-content p {
    font-size: 0.78rem;
  }

  .expertise-detail-content > p {
    font-size: 0.85rem;
  }

  .capability-item {
    grid-template-columns: 40px 1fr;

    gap: 12px;

    padding: 15px 0;
  }

  .capability-item strong {
    font-size: 0.78rem;
  }

  .architecture-expertise-layer {
    padding: 20px;
  }

  .architecture-expertise-node {
    flex: 1;

    min-width: 100px;

    padding: 12px 10px;

    font-size: 0.65rem;
  }

  .architecture-arrow {
    height: 40px;
  }

  .technology-group {
    padding: 22px;
  }

  .technology-items span {
    font-size: 0.54rem;
  }

  .expertise-cta {
    padding-top: 55px;

    padding-bottom: 75px;
  }

  .expertise-cta-inner {
    min-height: 340px;

    padding: 50px 20px;

    border-radius: 20px;
  }

  .expertise-cta .section-title {
    font-size: 2rem;
  }
}

@media (max-width: 400px) {
  .expertise-hero-title {
    font-size: 2.05rem;
  }

  .expertise-card-content h3 {
    font-size: 1.1rem;
  }

  .architecture-expertise-node {
    min-width: 90px;

    font-size: 0.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .expertise-large-card {
    transition: none;
  }
}