/* ===== DeepSeek Harness Documentation - Styles (gaya rasmi DeepSeek) ===== */
:root {
  --bg: #0d1117;
  --bg-soft: #101826;
  --card: #131b2b;
  --border: #1c2434;
  --text: #e6edf3;
  --muted: #8b949e;
  --primary: #4d6bfe;
  --primary-2: #6e56cf;
  --accent: #38bdf8;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #f87171;
  --radius: 16px;
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(700px 350px at 15% -5%, rgba(77, 107, 254, 0.14), transparent),
    radial-gradient(700px 350px at 85% 105%, rgba(56, 189, 248, 0.08), transparent);
  pointer-events: none;
  z-index: -1;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }

/* ===== Navbar ===== */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
}
.brand-badge {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 8px;
  letter-spacing: 0.5px;
}
.nav-links { display: flex; gap: 1.4rem; align-items: center; }
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); }
.nav-cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff !important;
  padding: 8px 16px;
  border-radius: 10px;
  font-weight: 600;
}
.nav-cta:hover { opacity: 0.9; }
.hamburger { display: none; background: none; border: none; color: var(--text); font-size: 1.5rem; cursor: pointer; }

/* ===== Hero ===== */
.hero { padding: 4rem 0 3rem; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.hero .eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 1.2rem;
}
.hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  margin-bottom: 1.2rem;
}
.hero h1 .grad {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p.lead { color: var(--muted); font-size: 1.08rem; margin-bottom: 1.8rem; max-width: 540px; }
.hero-img { animation: float 6s ease-in-out infinite; }
.hero-img img { width: 100%; max-width: 500px; border-radius: var(--radius); box-shadow: var(--shadow); }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
.btn-group { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  box-shadow: 0 8px 20px rgba(77, 107, 254, 0.35);
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--primary); }

/* ===== Sections ===== */
section { padding: 3.5rem 0; }
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 0.6rem;
}
.section-sub { color: var(--muted); margin-bottom: 2.5rem; max-width: 640px; }
.center { text-align: center; }
.center .section-sub { margin-left: auto; margin-right: auto; }

/* ===== Concept strip ===== */
.concept {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 2rem;
}
.concept h3 { font-size: 1.25rem; margin-bottom: 0.8rem; color: var(--accent); }
.concept p { color: var(--muted); }

/* ===== Features grid ===== */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.feature-card img { width: 64px; height: 64px; margin-bottom: 1rem; }
.feature-card h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.feature-card p { color: var(--muted); font-size: 0.9rem; }

/* ===== Modes ===== */
.modes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}
.mode-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  position: relative;
  transition: border-color 0.25s;
}
.mode-card:hover { border-color: var(--accent); }
.mode-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 0.8rem;
}
.tag-blue { background: rgba(56, 189, 248, 0.12); color: var(--accent); }
.tag-indigo { background: rgba(77, 107, 254, 0.15); color: #a5b4fc; }
.tag-green { background: rgba(16, 185, 129, 0.12); color: var(--success); }
.tag-purple { background: rgba(167, 139, 250, 0.15); color: #c4b5fd; }
.mode-card h4 { margin-bottom: 0.5rem; font-size: 1.05rem; }
.mode-card p { color: var(--muted); font-size: 0.88rem; }

/* ===== Quickstart ===== */
.steps { counter-reset: step; display: grid; gap: 1.2rem; }
.step {
  display: flex;
  gap: 1.2rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  align-items: flex-start;
}
.step::before {
  counter-increment: step;
  content: counter(step);
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
}
.step h4 { margin-bottom: 0.3rem; }
.step p { color: var(--muted); font-size: 0.9rem; }
.step code {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 8px;
  font-family: 'Cascadia Code', 'Fira Code', monospace;
  font-size: 0.85em;
  color: var(--accent);
  word-break: break-all;
}

/* ===== Code block ===== */
.codeblock {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.2rem 1.4rem;
  margin-top: 2rem;
  position: relative;
  overflow-x: auto;
}
.codeblock pre {
  font-family: 'Cascadia Code', 'Fira Code', monospace;
  font-size: 0.88rem;
  color: #a5b4fc;
  line-height: 1.6;
}
.codeblock .comment { color: #64748b; }
.codeblock .cmd { color: #7dd3fc; }
.codeblock .out { color: #94a3b8; }

/* ===== Callout ===== */
.callout {
  border-left: 4px solid var(--accent);
  background: rgba(56, 189, 248, 0.06);
  border-radius: 0 12px 12px 0;
  padding: 1rem 1.4rem;
  margin: 1.5rem 0;
  font-size: 0.9rem;
  color: var(--muted);
}
.callout strong { color: var(--accent); }
.callout.info { border-color: var(--primary); background: rgba(77, 107, 254, 0.07); }
.callout.info strong { color: #a5b4fc; }

/* ===== Links ===== */
.link-list { display: grid; gap: 1rem; }
.link-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.25s, transform 0.2s;
}
.link-item:hover { border-color: var(--primary); transform: translateY(-3px); }
.link-item .title { font-weight: 600; }
.link-item .desc { color: var(--muted); font-size: 0.85rem; }
.link-item .arrow { color: var(--accent); font-size: 1.2rem; }

/* ===== Footer ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}
footer .heart { color: var(--danger); }

/* ===== Reveal animation ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero p.lead { margin: 0 auto 1.8rem; }
  .btn-group { justify-content: center; }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-soft);
    border-bottom: 1px solid var(--border);
    padding: 1rem;
    gap: 1rem;
  }
  .nav-links.open { display: flex; }
  .hamburger { display: block; }
}