/* ============================================================
   AI Article Builder — situs publik
   Arah desain: industrial editorial. Charcoal gelap, aksen amber,
   display Archivo Black, teks IBM Plex Sans, data IBM Plex Mono.
   ============================================================ */

:root {
  --bg: #101418;
  --bg-deep: #0b0e12;
  --surface: #151b21;
  --line: rgba(235, 240, 245, 0.11);
  --line-soft: rgba(235, 240, 245, 0.07);
  --text: #edeff2;
  --muted: #9ba3ad;
  --acc: #f2b90d;
  --acc-ink: #171203;
  --blue: #4c8dff;
  --ok: #35c46f;
  --bad: #ff6b6b;
  --font-body: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --font-display: "Archivo Black", "Arial Black", sans-serif;
  --font-mono: "IBM Plex Mono", Consolas, monospace;
  --wrap: 1180px;
}

* { box-sizing: border-box; min-width: 0; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
.wrap { width: min(var(--wrap), calc(100% - 40px)); margin-inline: auto; }
.mono { font-family: var(--font-mono); font-size: 0.8em; letter-spacing: 0.02em; }

.skip {
  position: absolute; left: -999px; top: 8px; z-index: 99;
  background: var(--acc); color: var(--acc-ink); padding: 8px 14px; border-radius: 4px; font-weight: 700;
}
.skip:focus { left: 8px; }

/* ---------------------------------------------------------- tipografi */
.display {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.5rem, 6.4vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -0.01em;
  margin: 0 0 22px;
  text-transform: none;
}
.display-sm {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.7rem, 3.6vw, 2.6rem);
  line-height: 1.1;
  margin: 0 0 14px;
}
.acc { color: var(--acc); }
.eyebrow {
  color: var(--acc);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin: 0 0 16px;
}
.lede { font-size: clamp(1.02rem, 1.6vw, 1.18rem); color: var(--muted); max-width: 34em; }
.sec-head { max-width: 720px; margin-bottom: 40px; }
.sec-sub { color: var(--muted); margin-top: 10px; }

h3 { font-size: 1.12rem; font-weight: 700; margin: 0 0 8px; letter-spacing: 0.01em; }
p { margin: 0 0 14px; }
p:last-child { margin-bottom: 0; }

/* ---------------------------------------------------------- tombol */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 20px; border-radius: 6px; border: 1px solid transparent;
  font-weight: 700; font-size: 0.95rem; text-decoration: none; cursor: pointer;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease;
  font-family: var(--font-body);
}
.btn:active { transform: translateY(1px); }
.btn-lg { padding: 14px 26px; font-size: 1.02rem; }
.btn-sm { padding: 6px 12px; font-size: 0.85rem; }
.btn-solid { background: var(--acc); color: var(--acc-ink); }
.btn-solid:hover { background: #ffd23e; }
.btn-line { border-color: var(--line); color: var(--text); background: transparent; }
.btn-line:hover { border-color: var(--acc); color: var(--acc); }
.btn-ghost { color: var(--muted); background: transparent; }
.btn-ghost:hover { color: var(--text); }

/* ---------------------------------------------------------- header */
.hd {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg-deep) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.hd-in { display: flex; align-items: center; gap: 26px; height: 62px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; letter-spacing: 0.01em; }
.brand em { font-style: normal; color: var(--acc); }
.hd-nav { display: flex; gap: 22px; margin-left: 8px; }
.hd-nav a { text-decoration: none; color: var(--muted); font-size: 0.92rem; font-weight: 500; }
.hd-nav a:hover { color: var(--text); }
.hd-cta { margin-left: auto; display: flex; gap: 10px; align-items: center; }
.hd-burger { display: none; }

/* ---------------------------------------------------------- hero */
.hero { padding: clamp(48px, 8vw, 96px) 0 0; border-bottom: 1px solid var(--line-soft); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(28px, 4vw, 64px); align-items: center; padding-bottom: clamp(40px, 6vw, 80px); }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 18px; }
.cta-center { justify-content: center; }
.trust { color: var(--muted); }

.frame { border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--bg-deep); box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45); }
.frame-bar { display: flex; align-items: center; gap: 6px; padding: 9px 12px; border-bottom: 1px solid var(--line-soft); color: var(--muted); }
.frame-bar i { width: 9px; height: 9px; border-radius: 50%; background: var(--line); display: inline-block; }
.frame-bar span { margin-left: 8px; }
.hero-shot { margin: 0; transform: rotate(0.6deg); }

.ticker { margin-top: 14px; border: 1px solid var(--line-soft); border-radius: 6px; overflow: hidden; color: var(--acc); background: var(--bg-deep); padding: 8px 0; white-space: nowrap; max-width: 100%; contain: inline-size; }
.ticker-track { display: inline-flex; gap: 42px; padding-left: 100%; animation: tick 36s linear infinite; }
@keyframes tick { to { transform: translateX(-50%); } }

/* ---------------------------------------------------------- fakta */
.facts { border-bottom: 1px solid var(--line-soft); background: var(--bg-deep); padding: 10px 0; }
.facts-row {
  display: flex; gap: 34px; overflow-x: auto; padding: 14px 0; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.1em; white-space: nowrap; scrollbar-width: none;
}
.facts-row::-webkit-scrollbar { display: none; }
.facts-row span { flex: 0 0 auto; }
.facts-row span::before { content: "▪"; color: var(--acc); margin-right: 10px; }

/* ---------------------------------------------------------- section umum */
section { padding: clamp(56px, 8vw, 110px) 0; }
.problem { background: var(--bg); }

.prob-rows { display: flex; flex-direction: column; }
.prob-row {
  display: grid; grid-template-columns: 80px minmax(0, 320px) minmax(0, 1fr);
  gap: 18px 30px; padding: 30px 0; border-top: 1px solid var(--line-soft); align-items: start;
}
.prob-row:last-child { border-bottom: 1px solid var(--line-soft); }
.prob-num { font-size: 2rem; color: var(--acc); line-height: 1; }
.prob-row h3 { font-size: 1.25rem; }
.prob-row p { color: var(--muted); }

/* ---------------------------------------------------------- split */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 70px); align-items: center; }
.split-rev .split-copy { order: 1; }
.split-rev .split-img { order: 2; }
.split-img { margin: 0; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4); }
.desire { background: var(--bg-deep); border-block: 1px solid var(--line-soft); }
.checks { list-style: none; padding: 0; margin: 18px 0 0; }
.checks li { padding-left: 28px; position: relative; margin-bottom: 10px; color: var(--text); }
.checks li::before { content: "✓"; position: absolute; left: 0; color: var(--acc); font-weight: 700; }

/* ---------------------------------------------------------- cara kerja */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 26px; counter-reset: step; }
.step { border-top: 2px solid var(--line); padding-top: 18px; position: relative; }
.step-num { color: var(--acc); font-size: 1.6rem; display: block; margin-bottom: 10px; }
.step p { color: var(--muted); font-size: 0.95rem; }
.how-shots { display: grid; grid-template-columns: 7fr 5fr; gap: 26px; margin-top: 48px; align-items: start; }
.how-shots figure { margin: 0; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--bg-deep); }
.how-shots figcaption { padding: 10px 14px; color: var(--muted); border-top: 1px solid var(--line-soft); }

/* ---------------------------------------------------------- fitur */
.feat { background: var(--bg-deep); border-block: 1px solid var(--line-soft); }
.feat-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.feat-card {
  border: 1px solid var(--line-soft); border-radius: 10px; padding: 22px;
  background: var(--surface); transition: border-color 150ms ease;
}
.feat-card:hover { border-color: var(--acc); }
.feat-card p { color: var(--muted); font-size: 0.95rem; }
.feat-big { grid-column: span 2; background: linear-gradient(180deg, var(--surface), color-mix(in srgb, var(--surface) 60%, var(--bg-deep))); }
.feat-big h3 { font-size: 1.4rem; }
.feat-tag { color: var(--acc); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 14px; }

/* ---------------------------------------------------------- proof */
.proof-nums { display: flex; flex-wrap: wrap; gap: 26px; margin-top: 26px; color: var(--muted); }
.proof-nums b { display: block; font-size: 2rem; color: var(--text); font-family: var(--font-mono); font-weight: 500; }

/* ---------------------------------------------------------- harga */
.price { background: var(--bg); }
.price-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; align-items: stretch; }
.price-card {
  border: 1px solid var(--line-soft); border-radius: 10px; padding: 26px 22px;
  background: var(--surface); display: flex; flex-direction: column; gap: 8px;
}
.price-card h3 { color: var(--muted); letter-spacing: 0.14em; font-weight: 500; font-size: 0.8rem; }
.price-num { font-family: var(--font-display); font-size: clamp(1.5rem, 2.4vw, 1.9rem); margin: 2px 0; }
.price-per { color: var(--muted); flex: 1; }
.price-hot { border-color: var(--acc); position: relative; background: linear-gradient(180deg, color-mix(in srgb, var(--acc) 9%, var(--surface)), var(--surface)); }
.price-flag { color: var(--acc); text-transform: uppercase; letter-spacing: 0.1em; margin: 0; }
.price-note { color: var(--muted); max-width: 760px; margin-top: 28px; font-size: 0.95rem; }

/* ---------------------------------------------------------- FAQ */
.faq { background: var(--bg-deep); border-block: 1px solid var(--line-soft); }
.faq-grid { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: clamp(28px, 4vw, 60px); align-items: start; }
.faq-grid .sec-head { position: sticky; top: 90px; margin-bottom: 0; }
.faq-list details { border-top: 1px solid var(--line-soft); }
.faq-list details:last-child { border-bottom: 1px solid var(--line-soft); }
.faq-list summary {
  cursor: pointer; list-style: none; padding: 18px 40px 18px 0; font-weight: 600; position: relative; font-size: 1.02rem;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  color: var(--acc); font-family: var(--font-mono); font-size: 1.2rem;
}
.faq-list details[open] summary::after { content: "–"; }
.faq-list details p { color: var(--muted); padding: 0 0 18px; max-width: 56em; }

/* ---------------------------------------------------------- final CTA */
.final { text-align: center; padding-bottom: clamp(80px, 10vw, 140px); }
.final .eyebrow { justify-content: center; }
.final-lede { margin-inline: auto; }

/* ---------------------------------------------------------- footer */
.ft { border-top: 1px solid var(--line-soft); background: var(--bg-deep); padding: 40px 0; }
.ft-in { display: flex; flex-wrap: wrap; gap: 24px; align-items: flex-start; }
.ft-brand { display: flex; gap: 12px; align-items: flex-start; max-width: 340px; }
.ft-brand p { color: var(--muted); font-size: 0.9rem; margin: 4px 0 0; }
.ft-nav { display: flex; flex-wrap: wrap; gap: 18px; margin-left: auto; }
.ft-nav a { color: var(--muted); text-decoration: none; font-size: 0.9rem; }
.ft-nav a:hover { color: var(--text); }
.ft-copy { width: 100%; color: var(--muted); border-top: 1px solid var(--line-soft); padding-top: 18px; margin: 8px 0 0; }

/* ---------------------------------------------------------- flash & form auth */
.flash { border-radius: 8px; padding: 12px 16px; margin: 18px 0; font-size: 0.95rem; border: 1px solid; }
.flash-ok { background: rgba(53, 196, 111, 0.08); border-color: rgba(53, 196, 111, 0.4); color: #7fe0a9; }
.flash-warn { background: rgba(242, 185, 13, 0.07); border-color: rgba(242, 185, 13, 0.4); color: #ffd23e; }
.flash-info { background: rgba(76, 141, 255, 0.08); border-color: rgba(76, 141, 255, 0.4); color: #9dbdff; }

.auth { min-height: 62vh; display: grid; place-items: center; padding: 60px 0; }
.auth-card {
  width: min(430px, calc(100vw - 40px)); background: var(--surface);
  border: 1px solid var(--line); border-radius: 12px; padding: 32px;
}
.auth-card h1 { font-family: var(--font-display); font-size: 1.5rem; margin: 0 0 6px; }
.auth-card .sub { color: var(--muted); font-size: 0.95rem; margin-bottom: 20px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 0.88rem; font-weight: 600; margin-bottom: 6px; color: #c7cdd4; }
.field input {
  width: 100%; padding: 11px 12px; border-radius: 6px; border: 1px solid var(--line);
  background: var(--bg-deep); color: var(--text); font-size: 0.98rem; font-family: var(--font-body);
}
.field input:focus { outline: 2px solid var(--acc); outline-offset: 0; border-color: transparent; }
.auth-card .btn { width: 100%; margin-top: 6px; }
.auth-alt { margin-top: 18px; font-size: 0.9rem; color: var(--muted); text-align: center; }
.auth-alt a { color: var(--acc); }
.err-box { background: rgba(255, 107, 107, 0.08); border: 1px solid rgba(255, 107, 107, 0.45); color: #ffb4b4; border-radius: 6px; padding: 10px 12px; font-size: 0.92rem; margin-bottom: 16px; }

/* ---------------------------------------------------------- halaman legal */
.legal { padding: 60px 0 90px; }
.legal .wrap { max-width: 760px; }
.legal h1 { font-family: var(--font-display); font-size: 2rem; }
.legal h2 { font-size: 1.2rem; margin-top: 34px; }
.legal p, .legal li { color: var(--muted); }
.legal .updated { color: var(--muted); }

/* ---------------------------------------------------------- blog */
.blog-wrap { padding: clamp(36px, 5vw, 64px) 0 clamp(60px, 8vw, 100px); }
.blog-col { max-width: 760px; }
.blog-head { margin-bottom: 34px; }

.postlist { display: flex; flex-direction: column; gap: 26px; }
.postcard {
  display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 20px;
  border: 1px solid var(--line-soft); border-radius: 12px; overflow: hidden; background: var(--surface);
}
.postcard:not(:has(.postcard-img)) { grid-template-columns: 1fr; }
.postcard-img { display: block; height: 100%; }
.postcard-img img { width: 100%; height: 100%; object-fit: cover; }
.postcard-body { padding: 18px 20px 18px 0; min-width: 0; }
.postcard:not(:has(.postcard-img)) .postcard-body { padding-left: 20px; }
.postcard-meta { color: var(--muted); margin: 0 0 6px; }
.postcard-meta a { color: var(--acc); text-decoration: none; }
.postcard-title { font-size: 1.25rem; line-height: 1.3; margin: 0 0 8px; }
.postcard-title a { color: var(--text); text-decoration: none; }
.postcard-title a:hover { color: var(--acc); }
.postcard-excerpt { color: var(--muted); font-size: 0.95rem; margin-bottom: 10px; }
.postcard-more { color: var(--acc); text-decoration: none; font-weight: 600; font-size: 0.92rem; }
.blog-pager { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-top: 34px; }

.post-head { margin-bottom: 22px; }
.post-title { font-family: var(--font-display); font-weight: 400; font-size: clamp(1.7rem, 4.5vw, 2.6rem); line-height: 1.15; margin: 10px 0 12px; }
.post-byline { color: var(--muted); }
.post-hero { margin: 0 0 20px; border-radius: 12px; overflow: hidden; border: 1px solid var(--line-soft); }
.post-hero img { width: 100%; height: auto; }

.post-share { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 18px 0; }
.post-share .mono { color: var(--muted); margin-right: 4px; }
.share-btn {
  border: 1px solid var(--line); background: transparent; color: var(--text);
  padding: 6px 12px; border-radius: 999px; font-size: 0.82rem; font-weight: 600;
  text-decoration: none; cursor: pointer; font-family: var(--font-body);
}
.share-btn:hover { border-color: var(--acc); color: var(--acc); }
.post-share-bottom { border-top: 1px solid var(--line-soft); padding-top: 20px; margin-top: 30px; }

.prose { font-size: 1.05rem; line-height: 1.8; }
.prose h2 { font-size: 1.45rem; margin: 34px 0 12px; line-height: 1.3; }
.prose h3 { font-size: 1.15rem; margin: 26px 0 10px; }
.prose p { margin: 0 0 16px; }
.prose img { max-width: 100%; height: auto; border-radius: 10px; margin: 8px 0; }
.prose a { color: var(--acc); }
.prose ul, .prose ol { margin: 0 0 16px; padding-left: 26px; }
.prose li { margin-bottom: 6px; }
.prose blockquote { border-left: 3px solid var(--acc); margin: 20px 0; padding: 6px 0 6px 18px; color: var(--muted); font-style: italic; }
.prose pre { background: var(--bg-deep); border: 1px solid var(--line-soft); border-radius: 8px; padding: 14px; overflow-x: auto; font-size: 0.85rem; }
.prose table { width: 100%; border-collapse: collapse; margin: 0 0 16px; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--line-soft); padding: 8px 10px; text-align: left; font-size: 0.92rem; }

.post-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0 0; }
.tagchip { border: 1px solid var(--line-soft); border-radius: 999px; padding: 4px 12px; color: var(--muted); text-decoration: none; }
.tagchip:hover { color: var(--acc); border-color: var(--acc); }

.related { margin-top: 46px; border-top: 1px solid var(--line-soft); padding-top: 30px; }
.related-title { font-family: var(--font-display); font-weight: 400; font-size: 1.4rem; margin: 0 0 18px; }
.related-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.related-card {
  display: flex; flex-direction: column; gap: 8px; text-decoration: none; color: var(--text);
  border: 1px solid var(--line-soft); border-radius: 10px; padding: 12px; background: var(--surface);
}
.related-card:hover { border-color: var(--acc); }
.related-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; border-radius: 6px; }
.related-name { font-weight: 600; font-size: 0.93rem; line-height: 1.4; }
.related-date { color: var(--muted); }

@media (max-width: 720px) {
  .postcard, .postcard:not(:has(.postcard-img)) { grid-template-columns: 1fr; }
  .postcard-img img { aspect-ratio: 16/9; height: auto; }
  .postcard-body, .postcard:not(:has(.postcard-img)) .postcard-body { padding: 16px 18px; }
  .related-grid { grid-template-columns: 1fr; }
}

/* ---------------------------------------------------------- reveal */
[data-rv] { opacity: 0; transform: translateY(18px); transition: opacity 550ms ease, transform 550ms ease; }
[data-rv].rv-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-rv] { opacity: 1; transform: none; transition: none; }
  .ticker-track { animation: none; padding-left: 0; }
  .btn { transition: none; }
}

/* ---------------------------------------------------------- responsif */
@media (max-width: 1020px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-shot { transform: none; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feat-big { grid-column: span 2; }
  .price-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .how-shots { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .faq-grid .sec-head { position: static; }
  .prob-row { grid-template-columns: 52px minmax(0, 1fr); }
  .prob-row p { grid-column: 2; }
  .split, .split-rev { grid-template-columns: 1fr; }
  .split-rev .split-copy { order: 2; }
  .split-rev .split-img { order: 1; }
}

@media (max-width: 720px) {
  body { font-size: 15.5px; }
  .hd-nav { display: none; position: absolute; top: 62px; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--bg-deep); border-bottom: 1px solid var(--line); padding: 8px 20px 16px; }
  .hd-nav.open { display: flex; }
  .hd-nav a { padding: 12px 0; border-bottom: 1px solid var(--line-soft); }
  .hd-cta .btn-ghost { display: none; }
  .hd-burger {
    display: block; width: 40px; height: 40px; background: none; border: 1px solid var(--line);
    border-radius: 6px; position: relative; cursor: pointer;
  }
  .hd-burger span, .hd-burger span::before, .hd-burger span::after {
    content: ""; position: absolute; left: 9px; right: 9px; height: 2px; background: var(--text); transition: transform 150ms ease;
  }
  .hd-burger span { top: 19px; }
  .hd-burger span::before { top: -6px; }
  .hd-burger span::after { top: 6px; }
  .steps { grid-template-columns: 1fr; }
  .feat-grid { grid-template-columns: 1fr; }
  .feat-big { grid-column: auto; }
  .price-grid { grid-template-columns: 1fr; }
  .cta-row .btn { flex: 1; }
  .prob-row h3 { font-size: 1.1rem; }
  .proof-nums { gap: 18px; }
}