/* ═══════════════════════════════════════════════════════
   PCU CORPORATION — HISTORY PAGE STYLES (history.css)
   ═══════════════════════════════════════════════════════ */

/* ── Hero Split Section ───────────────────────────────────── */
.hist-hero-section {
  padding: 150px 0 80px;
  background-color: var(--color-white);
}

.hist-hero-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hist-hero-left {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.hist-hero-title {
  font-family: var(--font-heading);
  font-size: clamp(44px, 5.5vw, 76px);
  font-weight: 400;
  color: var(--color-primary);
  line-height: 1.02;
  letter-spacing: -0.05em;
  text-transform: uppercase;
  margin: 0;
}

.hist-hero-desc {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: var(--font-weight-regular);
  color: var(--color-primary);
  line-height: 1.4;
  letter-spacing: -0.03em;
  margin: 0;
  max-width: 520px;
}

/* Timeline Filter Tabs */
.hist-tabs {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.hist-tab-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 36px;
  border-radius: 100px;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  text-decoration: none;
}

.hist-tab-btn.active {
  background-color: var(--color-primary);
  color: var(--color-white);
  border: 1px solid var(--color-primary);
}

.hist-tab-btn:not(.active) {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid rgba(1, 19, 52, 0.4);
}

.hist-tab-btn:not(.active):hover {
  border-color: var(--color-primary);
  color: #3D86E9;
}

/* Hero Right Visual Frame */
.hist-hero-right {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hist-hero-visual {
  width: 100%;
  min-height: 440px;
  border-radius: 28px;
  background-color: #EBF5FC;
  background-size: cover;
  background-position: center;
  border: 1px solid rgba(1, 19, 52, 0.08);
}

/* ── Timeline Grid ────────────────────────────────────────── */
.hist-timeline-section {
  padding: 40px 0 80px;
  background-color: var(--color-white);
}

.hist-timeline-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.hist-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 36px 32px;
  min-height: 280px;
  border: 1px solid rgba(1, 19, 52, 0.2);
  border-radius: 12px;
  background-color: var(--color-white);
  box-sizing: border-box;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.hist-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.06);
}

.hist-card--span2 {
  grid-column: span 1;
}

.hist-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.hist-card-year {
  font-family: var(--font-heading);
  font-size: 34px;
  font-weight: 400;
  color: var(--color-primary);
  letter-spacing: -0.04em;
  line-height: 1;
}

.hist-card-arrow {
  color: #3D86E9;
  font-size: 22px;
  line-height: 1;
  transition: transform var(--transition-fast);
}

.hist-card:hover .hist-card-arrow {
  transform: translate(2px, -2px);
}

.hist-card-text {
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: var(--font-weight-regular);
  color: var(--color-primary);
  line-height: 1.45;
  letter-spacing: -0.02em;
  margin: 0;
}

.hist-card-text strong,
.hist-card-text span.highlight {
  color: #3D86E9;
  font-weight: 500;
}

/* ── Evolution Section ────────────────────────────────────── */
.hist-evolution-section {
  padding: 60px 0 80px;
  background-color: var(--color-white);
}

.hist-evolution-layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 60px;
  align-items: flex-start;
}

.hist-evolution-left {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.hist-tag {
  align-self: flex-start;
  padding: 6px 18px;
  border-radius: 100px;
  border: 1px solid rgba(1, 19, 52, 0.4);
  background: transparent;
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-size: 15px;
  letter-spacing: -0.02em;
}

.hist-evolution-title {
  font-family: var(--font-heading);
  font-size: 40px;
  font-weight: 400;
  color: var(--color-primary);
  line-height: 1.15;
  letter-spacing: -0.04em;
  margin: 0;
}

.hist-evolution-right {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.hist-evolution-desc {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: var(--font-weight-regular);
  color: var(--color-primary);
  line-height: 1.45;
  letter-spacing: -0.03em;
  margin: 0;
}

/* ── CTA Banner Section (Dark Box) ────────────────────────── */
.hist-cta-section {
  padding: 40px 0 120px;
  background-color: var(--color-white);
}

.hist-cta-box {
  background-color: var(--color-primary);
  border-radius: 28px;
  padding: 60px 70px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(1, 19, 52, 0.15);
}

.hist-cta-left {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hist-cta-title {
  font-family: var(--font-heading);
  font-size: 40px;
  font-weight: 400;
  color: var(--color-white);
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin: 0;
}

.hist-cta-desc {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: var(--font-weight-regular);
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.4;
  letter-spacing: -0.02em;
  margin: 0;
  max-width: 440px;
}

.hist-cta-btn {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 32px;
  border-radius: 100px;
  border: 1px solid var(--color-white);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 500;
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  margin-top: 10px;
}

.hist-cta-btn:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
}

.hist-cta-right {
  display: flex;
  justify-content: flex-end;
}

.hist-cta-mockup {
  width: 100%;
  max-width: 480px;
  border-radius: 16px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  overflow: hidden;
  background-color: var(--color-white);
}

.hist-cta-mockup img {
  width: 100%;
  height: auto;
  display: block;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 1180px) {
  .hist-hero-layout,
  .hist-evolution-layout,
  .hist-cta-box {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hist-timeline-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hist-cta-box {
    padding: 40px 30px;
  }
}

@media (max-width: 768px) {
  .hist-hero-section {
    padding-top: 120px;
  }

  .hist-hero-title {
    font-size: 38px;
  }

  .hist-timeline-grid {
    grid-template-columns: 1fr;
  }

  .hist-card {
    min-height: auto;
    padding: 28px 24px;
  }

  .hist-evolution-title {
    font-size: 30px;
  }

  .hist-cta-title {
    font-size: 30px;
  }
}