/* =====================================================================
   LOGISTAX PUBLICATION CENTER — STYLESHEET
   Modern · Simple · Elegant · Clean · Academic · Premium
   Palet warna mengikuti logo Logistax X: navy/dark blue, medium blue,
   light blue/cyan, putih, abu muda.
   ===================================================================== */

/* ---------- 1. DESIGN TOKENS ---------- */
:root {
  /* Brand colors (dari logo Logistax) */
  --navy:        #0C2D4D;  /* dark blue / navy — sisi kanan logo */
  --navy-700:    #123a60;
  --navy-600:    #18496f;
  --blue:        #1E7FC2;  /* medium blue — aksi utama */
  --blue-600:    #176aa6;
  --blue-050:    #e9f3fb;
  --cyan:        #3DB0E6;  /* light blue / cyan — aksen, sisi kiri logo */
  --cyan-600:    #2b95c9;
  --cyan-700:    #1d6a93;  /* cyan gelap untuk teks agar kontras */
  --cyan-050:    #e8f6fd;
  --gray:        #F4F7FB;  /* light gray */
  --gray-200:    #e4eaf2;
  --gray-300:    #cfd8e6;
  --ink:         #1c2a3e;
  --muted:       #5d6b80;
  --white:       #FFFFFF;

  /* Typography */
  --font-head: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Plus Jakarta Sans", "Segoe UI", system-ui, -apple-system, sans-serif;

  /* Radius & shadow */
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --shadow-sm: 0 1px 2px rgba(12,45,77,.06), 0 1px 3px rgba(12,45,77,.04);
  --shadow-md: 0 8px 24px rgba(12,45,77,.08);
  --shadow-lg: 0 20px 48px rgba(12,45,77,.14);

  /* Layout */
  --container: 1180px;
  --gutter: 24px;
  --section-y: 96px;

  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. RESET / BASE ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--white);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--blue-600); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--blue); }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  color: var(--navy);
  line-height: 1.18;
  font-weight: 600;
  letter-spacing: -.01em;
  margin: 0 0 .5em;
}
h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); }
h3 { font-size: 1.3rem; }
p  { margin: 0 0 1rem; }

/* ---------- 3. LAYOUT HELPERS ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section { padding-block: var(--section-y); }
.section--gray { background: var(--gray); }
.section--navy { background: var(--navy); color: #d8e2f0; }
.section--navy h2, .section--navy h3 { color: var(--white); }

.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section-head .eyebrow { margin-bottom: 14px; }
.section-head p { color: var(--muted); font-size: 1.06rem; }
.section--navy .section-head p { color: #aebccf; }

.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--blue-600);
}
.eyebrow--accent { color: var(--cyan); }

/* ---------- 4. BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5em;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: .98rem;
  line-height: 1;
  padding: .85em 1.5em;
  border-radius: 999px;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform .2s var(--ease), background .2s var(--ease),
              box-shadow .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary { background: var(--blue); color: var(--white); box-shadow: 0 6px 18px rgba(30,127,194,.32); }
.btn--primary:hover { background: var(--blue-600); color: var(--white); box-shadow: 0 10px 26px rgba(30,127,194,.4); }

.btn--accent { background: var(--cyan); color: var(--navy); box-shadow: 0 6px 18px rgba(61,176,230,.34); }
.btn--accent:hover { background: var(--cyan-600); color: var(--navy); box-shadow: 0 10px 26px rgba(61,176,230,.42); }

.btn--ghost { background: transparent; color: var(--navy); border-color: var(--gray-300); }
.btn--ghost:hover { border-color: var(--blue); color: var(--blue-600); }

.btn--light { background: rgba(255,255,255,.1); color: var(--white); border-color: rgba(255,255,255,.28); }
.btn--light:hover { background: rgba(255,255,255,.18); color: var(--white); }

.btn--sm { padding: .65em 1.1em; font-size: .88rem; }
.btn--block { width: 100%; justify-content: center; }

/* ---------- 5. HEADER / NAV ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.82);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--gray-200);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; height: 76px;
}
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand__logo { width: 44px; height: 44px; object-fit: contain; border-radius: 10px; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name { font-family: var(--font-head); font-weight: 600; font-size: 1.12rem; color: var(--navy); }
.brand__sub { font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: var(--blue-600); font-weight: 700; }

.nav__menu { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav__menu a {
  display: inline-block; padding: 8px 14px; border-radius: 999px;
  color: var(--ink); font-weight: 500; font-size: .95rem;
}
.nav__menu a:hover { background: var(--gray); color: var(--navy); }
.nav__actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

/* Dropdown */
.nav__item--has-children { position: relative; }
.nav__dropdown {
  position: absolute; top: calc(100% + 10px); left: 0; min-width: 260px;
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--r-md); box-shadow: var(--shadow-md);
  padding: 8px; list-style: none; margin: 0;
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: all .2s var(--ease);
}
.nav__item--has-children:hover .nav__dropdown,
.nav__item--has-children:focus-within .nav__dropdown {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.nav__dropdown a { display: block; padding: 10px 14px; border-radius: var(--r-sm); }
.nav__dropdown strong { display: block; color: var(--navy); font-family: var(--font-body); font-weight: 600; }
.nav__dropdown small { color: var(--muted); font-size: .82rem; }

.nav__toggle {
  display: none; background: none; border: none; cursor: pointer;
  width: 44px; height: 44px; padding: 10px; border-radius: var(--r-sm);
}
.nav__toggle span { display: block; height: 2px; background: var(--navy); border-radius: 2px; transition: all .25s var(--ease); }
.nav__toggle span + span { margin-top: 5px; }

/* ---------- 6. HERO ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1100px 520px at 78% -10%, rgba(61,176,230,.16), transparent 60%),
    radial-gradient(900px 480px at 8% 8%, rgba(30,127,194,.10), transparent 55%),
    linear-gradient(180deg, var(--gray) 0%, var(--white) 100%);
}
.hero__pattern {
  position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image: radial-gradient(var(--gray-300) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,.45), transparent 70%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,.45), transparent 70%);
}
.hero__inner { position: relative; padding-block: 92px 104px; max-width: 880px; }
.hero__badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--white); border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm); border-radius: 999px;
  padding: 7px 16px 7px 12px; font-size: .85rem; font-weight: 600; color: var(--navy);
  margin-bottom: 26px;
}
.hero__badge .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 4px var(--cyan-050); }
.hero h1 { margin-bottom: 20px; }
.hero h1 .accent { color: var(--blue); }
.hero__subtitle { font-size: 1.18rem; color: var(--muted); max-width: 680px; margin-bottom: 34px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; }

.hero__stats { display: flex; flex-wrap: wrap; gap: 40px; margin-top: 56px; }
.hero__stat .num { font-family: var(--font-head); font-size: 2rem; color: var(--navy); font-weight: 600; }
.hero__stat .lbl { font-size: .9rem; color: var(--muted); }

/* ---------- 7. PUBLICATION CARDS ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.pcard {
  display: flex; flex-direction: column;
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--r-lg); padding: 30px; box-shadow: var(--shadow-sm);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
}
.pcard:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--blue-050); }
.pcard__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.pcard__icon {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  background: var(--blue-050); color: var(--blue-600);
}
.pcard--accent .pcard__icon { background: var(--cyan-050); color: var(--cyan-700); }
.pcard--navy .pcard__icon { background: #e7edf6; color: var(--navy); }

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  padding: 6px 12px; border-radius: 999px;
  background: var(--blue-050); color: var(--blue-600);
}
.pcard--accent .badge { background: var(--cyan-050); color: var(--cyan-700); }
.pcard--navy .badge { background: #e7edf6; color: var(--navy); }

.pcard h3 { font-size: 1.22rem; margin-bottom: 12px; }
.pcard__desc { color: var(--muted); font-size: .96rem; flex-grow: 1; margin-bottom: 22px; }
.pcard__actions { display: flex; flex-direction: column; gap: 10px; }
.pcard__actions .row { display: flex; gap: 10px; }
.pcard__actions .row .btn { flex: 1; }

/* ---------- 8. ABOUT / FEATURE GRID ---------- */
.about { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
.about__media {
  background: linear-gradient(160deg, var(--navy), var(--navy-600));
  border-radius: var(--r-lg); padding: 40px; color: #cdd8ea; position: relative; overflow: hidden;
  box-shadow: var(--shadow-md);
}
.about__media::after {
  content: ""; position: absolute; right: -60px; top: -60px; width: 220px; height: 220px;
  background: radial-gradient(circle, rgba(61,176,230,.4), transparent 70%);
}
.about__media h3 { color: var(--white); }
.about__list { list-style: none; margin: 24px 0 0; padding: 0; display: grid; gap: 14px; }
.about__list li { display: flex; gap: 12px; align-items: flex-start; }
.about__list .ck { color: var(--cyan); flex-shrink: 0; margin-top: 2px; font-weight: 700; }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 16px; }
.feature {
  background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--r-md);
  padding: 24px; box-shadow: var(--shadow-sm);
}
.feature__icon { width: 44px; height: 44px; border-radius: 12px; background: var(--blue-050); color: var(--blue-600); display: grid; place-items: center; margin-bottom: 14px; }
.feature h3 { font-size: 1.05rem; }
.feature p { color: var(--muted); font-size: .92rem; margin: 0; }

/* ---------- 9. CALL FOR PAPERS ---------- */
.cfp {
  background: linear-gradient(140deg, var(--navy) 0%, var(--navy-700) 55%, #1b5183 100%);
  border-radius: var(--r-lg); padding: 56px; color: #d8e2f0; position: relative; overflow: hidden;
  box-shadow: var(--shadow-md);
}
.cfp::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .35;
  background-image: radial-gradient(rgba(255,255,255,.18) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: radial-gradient(700px 300px at 80% 20%, #000, transparent);
  -webkit-mask-image: radial-gradient(700px 300px at 80% 20%, #000, transparent);
}
.cfp__inner { position: relative; display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: center; }
.cfp h2 { color: var(--white); }
.cfp p { color: #b9c6da; }
.cfp__actions { display: flex; flex-direction: column; gap: 12px; }

/* ---------- 10. PROCESS (timeline) ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
.step { position: relative; background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--r-md); padding: 28px 24px; box-shadow: var(--shadow-sm); }
.step__num {
  counter-increment: step; font-family: var(--font-head); font-weight: 600;
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--navy); color: var(--white); font-size: 1.15rem; margin-bottom: 16px;
}
.step h3 { font-size: 1.05rem; }
.step p { color: var(--muted); font-size: .9rem; margin: 0; }

/* ---------- 11. ETHICS ---------- */
.ethics-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.ethic {
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--r-md); padding: 26px;
}
.ethic__icon { color: var(--cyan); margin-bottom: 12px; }
.ethic h3 { color: var(--white); font-size: 1.08rem; }
.ethic p { color: #aebccf; font-size: .92rem; margin: 0; }

/* ---------- 12. CONTACT ---------- */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.contact__list { list-style: none; margin: 24px 0 0; padding: 0; display: grid; gap: 18px; }
.contact__list li { display: flex; gap: 16px; align-items: flex-start; }
.contact__ic { width: 46px; height: 46px; flex-shrink: 0; border-radius: 12px; background: var(--blue-050); color: var(--blue-600); display: grid; place-items: center; }
.contact__list .lbl { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); font-weight: 700; }
.contact__list .val { color: var(--navy); font-weight: 500; }
.contact__card { background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--r-lg); padding: 32px; box-shadow: var(--shadow-sm); }

.field { margin-bottom: 16px; }
.field label { display: block; font-size: .86rem; font-weight: 600; color: var(--navy); margin-bottom: 6px; }
.field input, .field textarea {
  width: 100%; font-family: inherit; font-size: .95rem; color: var(--ink);
  padding: 12px 14px; border: 1.5px solid var(--gray-300); border-radius: var(--r-sm);
  background: var(--gray); transition: border-color .2s var(--ease), background .2s var(--ease);
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--blue); background: var(--white); }
.field textarea { resize: vertical; min-height: 120px; }

/* ---------- 13. FOOTER ---------- */
.site-footer { background: var(--navy); color: #aebccf; padding-block: 64px 28px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand .brand__name, .footer-brand .brand__sub { color: var(--white); }
/* Logo chip putih agar logo tampil utuh di atas background navy footer */
.site-footer .brand__logo { background: var(--white); padding: 5px; border-radius: 11px; }
.footer-brand p { color: #9fb0c6; font-size: .92rem; margin-top: 16px; max-width: 320px; }
.footer-col h4 { color: var(--white); font-family: var(--font-body); font-size: .82rem; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 16px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.footer-col a { color: #aebccf; font-size: .94rem; }
.footer-col a:hover { color: var(--cyan); }
.footer-bottom {
  margin-top: 48px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.1);
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between;
  color: #8294ad; font-size: .86rem;
}

/* ---------- 14. PAGE HERO (subpages) ---------- */
.page-hero {
  background:
    radial-gradient(900px 400px at 85% -20%, rgba(61,176,230,.14), transparent 60%),
    linear-gradient(180deg, var(--gray), var(--white));
  padding-block: 72px 56px; border-bottom: 1px solid var(--gray-200);
}
.page-hero .breadcrumb { font-size: .88rem; color: var(--muted); margin-bottom: 14px; }
.page-hero .breadcrumb a { color: var(--blue-600); }
.page-hero p { color: var(--muted); max-width: 680px; font-size: 1.08rem; }

/* ---------- 15. PROSE (article content) ---------- */
.prose { max-width: 820px; }
.prose h2 { margin-top: 2.2em; }
.prose h3 { margin-top: 1.6em; color: var(--navy); }
.prose ul, .prose ol { padding-left: 1.3em; margin-bottom: 1.2em; }
.prose li { margin-bottom: .5em; }
.prose .callout {
  background: var(--gray); border-left: 4px solid var(--blue);
  border-radius: var(--r-sm); padding: 18px 22px; margin: 1.5em 0; color: var(--ink);
}

/* ---------- 16. UTIL ---------- */
.text-center { text-align: center; }
.mt-32 { margin-top: 32px; }
.hide { display: none !important; }

/* ---------- 17. RESPONSIVE ---------- */
@media (max-width: 980px) {
  :root { --section-y: 72px; }
  .cards { grid-template-columns: 1fr; max-width: 480px; margin-inline: auto; }
  .about { grid-template-columns: 1fr; gap: 36px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .cfp__inner { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .ethics-grid { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .nav__toggle { display: block; }
  .nav__menu, .nav__actions .btn--ghost { display: none; }
  .nav__menu.is-open {
    display: flex; flex-direction: column; align-items: stretch; gap: 2px;
    position: absolute; top: 76px; left: 0; right: 0;
    background: var(--white); border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-md); padding: 12px;
  }
  .nav__menu.is-open .nav__dropdown {
    position: static; opacity: 1; visibility: visible; transform: none;
    box-shadow: none; border: none; padding-left: 12px; min-width: 0;
  }
  .hero__inner { padding-block: 64px 72px; }
  .hero__actions .btn { flex: 1 1 100%; justify-content: center; }
  .feature-grid, .steps, .footer-grid { grid-template-columns: 1fr; }
  .cfp { padding: 36px 24px; }
  .cfp__actions .btn { width: 100%; justify-content: center; }
}