/* ---------- Intro / hero halaman ---------- */
.intro-premium {
  position: relative; isolation: isolate; overflow: hidden;
  padding: 170px 0 90px; text-align: left;
  background:
    radial-gradient(800px 420px at 10% 10%, rgba(47, 91, 255, .5), transparent 60%),
    radial-gradient(600px 420px at 95% 100%, rgba(255, 181, 71, .2), transparent 60%),
    var(--midnight, #0A1330);
}
.intro-premium::after {
  content: ''; position: absolute; inset: 0; z-index: -1; opacity: .3;
  background-image: linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse at 25% 40%, #000 10%, transparent 70%);
  mask-image: radial-gradient(ellipse at 25% 40%, #000 10%, transparent 70%);
}
.intro-premium .intro-tag {
  display: inline-block; padding: 7px 16px; border-radius: 999px; margin-bottom: 18px;
  font-size: 13px; font-weight: 600; color: #CFD8FF;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16);
}
.intro-premium h1 {
  color: #fff; font-weight: 800; letter-spacing: -.035em; line-height: 1.05;
  font-size: clamp(38px, 6vw, 68px); margin: 0 0 14px; text-transform: none;
}
.intro-premium p { color: rgba(255,255,255,.78); font-size: 18px; max-width: 52ch; margin: 0; }
.intro-meta { list-style: none; padding: 0; margin: 30px 0 0; display: flex; flex-wrap: wrap; gap: 10px; }
.intro-meta li {
  padding: 8px 16px; border-radius: 999px; font-size: 13px; font-weight: 600; color: #E4E9FF;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16);
}
.intro-meta i { margin-right: 6px; color: var(--amber, #FFB547); }

/* ---------- Area konten ---------- */
.single-portfolio { padding: 90px 0 100px; }
.single-portfolio .row { display: flex; flex-wrap: wrap; align-items: flex-start; }

/* ---------- Mockup ponsel ---------- */
.phone-stage {
  position: relative; display: flex; justify-content: center; padding: 0 0 40px;
}
@media (min-width: 992px) {
  .phone-stage { position: sticky; top: 110px; }
}
.phone-stage::before {
  content: ''; position: absolute; inset: 6% 4%; z-index: 0; border-radius: 44px;
  background: linear-gradient(145deg, rgba(47,91,255,.16), rgba(255,181,71,.22));
}
.phone-frame {
  position: relative; z-index: 1; width: min(300px, 78%);
  padding: 12px; border-radius: 44px;
  background: linear-gradient(160deg, #1d2750, var(--midnight, #0A1330));
  box-shadow: 0 50px 80px rgba(27, 42, 107, .35), 0 0 0 2px rgba(255,255,255,.06) inset;
}
.phone-frame::before {
  content: ''; position: absolute; top: 20px; left: 50%; transform: translateX(-50%);
  width: 76px; height: 20px; border-radius: 12px; background: #05091c; z-index: 3;
}
.phone-frame .single-portfolio--slider { margin: 0; overflow: hidden; border-radius: 34px; }
.phone-frame img { display: block; width: 100%; height: auto; border-radius: 34px; }

/* ---------- Teks ---------- */
.detail-copy h2 {
  font-size: clamp(28px, 3.4vw, 42px); font-weight: 800; line-height: 1.15;
  letter-spacing: -.03em; color: var(--ink, #101828); margin: 0 0 20px;
}
.detail-copy p { font-size: 16.5px; line-height: 1.8; color: var(--muted, #5B6478); max-width: 62ch; }
.detail-copy h3 {
  font-size: 20px; font-weight: 700; color: var(--ink, #101828); margin: 34px 0 16px;
  text-transform: none; letter-spacing: -.01em;
}

/* ---------- Grid fitur ---------- */
.feature-grid {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px;
}
.feature-grid li {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 16px; border-radius: 16px; font-weight: 600; font-size: 14.5px; line-height: 1.4;
  color: var(--ink, #101828); background: #fff; border: 1px solid var(--line, rgba(16,24,40,.09));
  transition: transform .3s cubic-bezier(.22,.8,.24,1), box-shadow .3s, border-color .3s;
}
.feature-grid li:hover { transform: translateY(-3px); border-color: var(--sky, #5B8CFF); box-shadow: 0 14px 30px rgba(47,91,255,.14); }
.feature-grid i {
  flex: 0 0 38px; height: 38px; border-radius: 11px; display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 16px;
  background: linear-gradient(135deg, var(--cobalt, #2F5BFF), var(--indigo, #1B2A6B));
}

/* ---------- Info proyek ---------- */
.spec-grid {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0;
  margin: 34px 0 0; border-radius: 20px; overflow: hidden;
  background: var(--mist, #F4F6FB); border: 1px solid var(--line, rgba(16,24,40,.09));
}
.spec-grid > div { padding: 18px 22px; border-bottom: 1px solid var(--line, rgba(16,24,40,.09)); }
.spec-grid > div:nth-child(odd) { border-right: 1px solid var(--line, rgba(16,24,40,.09)); }
.spec-grid > div:nth-last-child(-n+2) { border-bottom: 0; }
.spec-grid dt { font-size: 12.5px; font-weight: 600; color: var(--muted, #5B6478); margin-bottom: 4px; }
.spec-grid dd { margin: 0; font-weight: 700; color: var(--ink, #101828); line-height: 1.4; }

/* ---------- Teknologi ---------- */
.tech-stack {
  border-radius: 20px; padding: 6px 22px;
  background: #fff; border: 1px solid var(--line, rgba(16,24,40,.09));
}
.tech-group {
  display: flex; align-items: center; gap: 18px; padding: 16px 0;
  border-bottom: 1px solid var(--line, rgba(16,24,40,.09));
}
.tech-group:last-child { border-bottom: 0; }
.tech-label {
  flex: 0 0 78px; font-size: 13px; font-weight: 600; color: var(--muted, #5B6478);
}
.tech-group ul { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.tech-group li {
  padding: 8px 16px; border-radius: 999px; font-size: 14px; font-weight: 700;
  color: var(--indigo, #1B2A6B); background: var(--mist, #F4F6FB);
  border: 1px solid transparent;
  transition: transform .25s cubic-bezier(.22,.8,.24,1), border-color .25s, background .25s, color .25s;
}
.tech-group li:hover {
  transform: translateY(-2px); background: #fff;
  border-color: var(--sky, #5B8CFF); color: var(--cobalt, #2F5BFF);
}

/* ---------- Tombol ---------- */
.detail-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
body .button.button-dark {
  background: #fff; color: var(--indigo, #1B2A6B);
  border: 1px solid var(--line, rgba(16,24,40,.12)); box-shadow: none;
}
body .button.button-dark:hover { border-color: var(--cobalt, #2F5BFF); color: var(--cobalt, #2F5BFF); box-shadow: 0 12px 28px rgba(47,91,255,.15); }

/* ---------- Mobile ---------- */
@media (max-width: 991px) {
  .intro-premium { padding: 130px 0 64px; }
  .single-portfolio { padding: 56px 0 72px; }
  .phone-stage { margin-bottom: 30px; }
}
@media (max-width: 575px) {
  .feature-grid, .spec-grid { grid-template-columns: 1fr; }
  .spec-grid > div:nth-child(odd) { border-right: 0; }
  .spec-grid > div:nth-last-child(2) { border-bottom: 1px solid var(--line, rgba(16,24,40,.09)); }
  .detail-actions .button { width: 100%; text-align: center; }
  .tech-group { flex-direction: column; align-items: flex-start; gap: 10px; }
  .tech-label { flex: none; }
}