/* Gaya khusus halaman landing (proposal). Memakai variabel dari style.css. */

.landing-topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 2rem;
  background: rgba(10, 22, 40, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.landing-topbar .brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.landing-topbar .brand .logo-chip img {
  height: 38px;
}

/* Toggle bahasa (memakai .lang-switch/.lang-btn dari style.css) */
html.lang-en [data-lang='id'],
html.lang-id [data-lang='en'] {
  display: none !important;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.user-chip {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Hero */
.landing-hero {
  position: relative;
  padding: 4rem 2rem 3.5rem;
  text-align: center;
  background:
    radial-gradient(1200px 400px at 50% -10%, rgba(78, 205, 196, 0.18), transparent 70%),
    linear-gradient(180deg, #0a2830 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
}

.landing-hero .eyebrow {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(78, 205, 196, 0.1);
  border: 1px solid var(--border);
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  margin-bottom: 1.25rem;
}

.landing-hero h1 {
  max-width: 920px;
  margin: 0 auto 1rem;
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.landing-hero .lead {
  max-width: 760px;
  margin: 0 auto 1.75rem;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.hero-cta {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-lg {
  padding: 0.8rem 1.6rem;
  font-size: 1rem;
}

/* Kontainer konten */
.landing-main {
  max-width: 1040px;
  margin: 0 auto;
  padding: 2.5rem 2rem 1rem;
  width: 100%;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.meta-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
}

.meta-item .k {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  margin-bottom: 0.3rem;
}

.meta-item .v {
  font-size: 0.95rem;
}

.landing-section {
  margin-bottom: 2.75rem;
}

.landing-section > h2 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--accent-dark);
  display: inline-block;
}

.landing-section h3 {
  font-size: 1.05rem;
  color: var(--accent);
  margin: 1.25rem 0 0.4rem;
}

.landing-section p {
  color: var(--text);
  margin-bottom: 0.9rem;
  line-height: 1.75;
}

.landing-section ul,
.landing-section ol {
  margin: 0 0 1rem 1.25rem;
  color: var(--text);
}

.landing-section li {
  margin-bottom: 0.4rem;
  line-height: 1.65;
}

.abstract-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
}

.deliverables-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
  list-style: none;
  margin-left: 0;
}

.deliverables-grid li {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.deliverables-grid .num {
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent);
  font-weight: 700;
}

.keyword-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-left: 0 !important;
  list-style: none;
}

.keyword-list span {
  background: rgba(78, 205, 196, 0.1);
  border: 1px solid var(--border);
  color: var(--accent);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  font-size: 0.85rem;
}

.timeline-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.timeline-table th,
.timeline-table td {
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.timeline-table th {
  color: var(--text-muted);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.03em;
}

.timeline-table .ph {
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent);
  white-space: nowrap;
}

.references {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.references li {
  margin-bottom: 0.7rem;
}

.landing-footer {
  text-align: center;
  padding: 2rem 1rem;
  margin-top: 2rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Modal login (opsional, dipakai bila login inline) */
@media (max-width: 640px) {
  .landing-topbar,
  .landing-hero,
  .landing-main {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}