/* ---------------------------------------------
   DiPStrategy -- Sejarah
   style/sejarah.css
   --------------------------------------------- */

.sej-page {
  background: #04172e;
  min-height: 100vh;
  position: relative;
  overflow: hidden;
}

.sej-pattern {
  display: none;
}

/* --- OPENER --- */
.sej-opener {
  position: relative; z-index: 1;
  padding: 180px 56px 100px;
  max-width: 1000px;
  margin: 0 auto;
}

.sej-opener::before,
.sej-opener::after {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  left: 50%;
  width: 100vw;
  transform: translateX(-50%);
  pointer-events: none;
}

.sej-opener::before {
  background-image: url('../assets/pattern-02.png');
  background-repeat: repeat;
  filter: invert(1);
  opacity: 0.13;
  z-index: 0;
}

.sej-opener::after {
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,0.82) 0%,
    rgba(0,0,0,0.55) 20%,
    rgba(0,0,0,0.15) 50%,
    rgba(0,0,0,0) 70%
  );
  z-index: 1;
}

.sej-opener > * {
  position: relative;
  z-index: 2;
}

.sej-accent-line {
  width: 160px; height: 4px;
  background: var(--lime);
  margin-bottom: 32px;
}

.sej-eyebrow {
  font-family: var(--font-body);
  font-weight: 500; font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  display: inline-flex; align-items: center; gap: 8px;
  margin-bottom: 20px;
}

.sej-label-star {
  width: 14px; height: 14px;
  animation: spin 12s linear infinite; flex-shrink: 0;
}

.sej-opener-label {
  font-family: var(--font-body);
  font-weight: 500; font-size: 11px;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--lime);
  display: inline-flex; align-items: center; gap: 10px;
  margin-bottom: 24px;
}

.sej-opener-label::before {
  content: '';
  width: 24px; height: 1px;
  background: var(--lime);
  display: inline-block;
}

.sej-opener-headline {
  font-family: var(--font-headline);
  font-weight: 200;
  font-size: clamp(28px, 4vw, 64px);
  color: var(--white);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 20px;
  max-width: 820px;
}

.sej-opener-headline strong { font-weight: 900; }

.sej-opener-translation {
  font-family: var(--font-body);
  font-weight: 300; font-size: 15px;
  line-height: 1.75;
  color: rgba(255,255,255,0.35);
  max-width: 640px;
  font-style: italic;
}

.sej-divider {
  width: 100%; height: 1px;
  background: rgba(255,255,255,0.06);
  margin: 0;
  position: relative; z-index: 1;
}

/* --- NARASI SECTION --- */
.sej-narasi-section {
  position: relative; z-index: 1;
  max-width: 1000px;
  margin: 0 auto;
  padding: 80px 56px 0;
}

.sej-narasi-section::before,
.sej-milestone-section::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 100vw;
  transform: translateX(-50%);
  background-image: url('../assets/pattern-02.png');
  background-repeat: repeat;
  filter: invert(1);
  opacity: 0.13;
  z-index: 0;
  pointer-events: none;
}

.sej-narasi-section > *,
.sej-milestone-section > * {
  position: relative;
  z-index: 1;
}

.sej-narasi-header {
  margin-bottom: 64px;
}

.sej-narasi-label {
  font-family: var(--font-body);
  font-weight: 500; font-size: 11px;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--lime);
  display: inline-flex; align-items: center; gap: 10px;
  margin-bottom: 20px;
}

.sej-narasi-label::before {
  content: '';
  width: 24px; height: 1px;
  background: var(--lime);
  display: inline-block;
}

.sej-narasi-intro {
  font-family: var(--font-headline);
  font-weight: 200;
  font-size: clamp(22px, 2.5vw, 36px);
  color: rgba(255,255,255,0.5);
  letter-spacing: -0.02em;
  line-height: 1.3;
  max-width: 640px;
}

.sej-narasi-intro strong { font-weight: 900; color: var(--white); }

.sej-narasi-body {
  max-width: 720px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding-bottom: 80px;
}

.sej-narasi-paragraph {
  font-family: var(--font-body);
  font-weight: 300; font-size: 16px;
  line-height: 1.85;
  color: rgba(255,255,255,0.55);
}

.sej-narasi-paragraph em {
  font-style: italic;
  color: rgba(255,255,255,0.75);
}

/* --- MILESTONE SECTION --- */
.sej-milestone-section {
  position: relative; z-index: 1;
  max-width: 1000px;
  margin: 0 auto;
  padding: 80px 56px 140px;
}

.sej-milestone-header {
  margin-bottom: 64px;
}

.sej-milestone-label {
  font-family: var(--font-body);
  font-weight: 500; font-size: 11px;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--lime);
  display: inline-flex; align-items: center; gap: 10px;
  margin-bottom: 20px;
}

.sej-milestone-label::before {
  content: '';
  width: 24px; height: 1px;
  background: var(--lime);
  display: inline-block;
}

.sej-milestone-intro {
  font-family: var(--font-headline);
  font-weight: 200;
  font-size: clamp(22px, 2.5vw, 36px);
  color: rgba(255,255,255,0.5);
  letter-spacing: -0.02em;
  line-height: 1.3;
  max-width: 640px;
}

.sej-milestone-intro strong { font-weight: 900; color: var(--white); }

/* Milestone items -- timeline list */
.sej-milestone-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.sej-milestone-list::before {
  content: '';
  position: absolute;
  left: 78px; top: 8px; bottom: 8px;
  width: 1px;
  background: rgba(222,255,45,0.5);
}

.sej-milestone-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 48px;
  padding: 40px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  align-items: start;
  position: relative;
  opacity: 0;
  transform: translateX(72px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: var(--milestone-delay, 0ms);
  will-change: opacity, transform;
}

.sej-milestone-item:last-child { border-bottom: none; }

.sej-milestone-item.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.sej-milestone-year {
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: clamp(18px, 1.8vw, 22px);
  color: var(--lime);
  letter-spacing: -0.01em;
  line-height: 1;
  padding-top: 4px;
  position: relative;
}

.sej-milestone-year::before {
  content: '';
  position: absolute;
  left: 78px; top: 9px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--lime);
  transform: translateX(-50%);
}

.sej-milestone-content {}

.sej-milestone-title {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: clamp(16px, 1.8vw, 22px);
  color: var(--white);
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin-bottom: 12px;
}

.sej-milestone-desc {
  font-family: var(--font-body);
  font-weight: 300; font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,0.45);
  max-width: 640px;
}

.sej-milestone-item--open .sej-milestone-year {
  color: var(--white);
}

.sej-milestone-item--open .sej-milestone-year::before {
  background: var(--white);
  box-shadow: 0 0 0 4px rgba(255,255,255,0.12);
}

.sej-milestone-item--open .sej-milestone-title {
  color: var(--lime);
}

/* --- RESPONSIVE --- */
@media (max-width: 900px) {
  .sej-opener            { padding: 140px 24px 60px; }
  .sej-narasi-section    { padding: 60px 24px 0; }
  .sej-milestone-section { padding: 60px 24px 80px; }

  .sej-milestone-item   { grid-template-columns: 1fr; gap: 12px; }
  .sej-milestone-list::before { display: none; }
  .sej-milestone-year::before { display: none; }
  .sej-milestone-year   { font-size: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .sej-milestone-item {
    opacity: 1;
    transform: none;
    transition: none;
  }
}