/* =========================
   Base + Theme Variables
========================= */
:root{
  --bg: #f7f2ed;              /* putih susu */
  --text: #141414;
  --muted: rgba(20,20,20,.66);

  --accent: #7a0d13;          /* merah agak kehitaman */
  --accent-2: #a1141b;

  --card-bg: rgba(255,255,255,.62);
  --card-border: rgba(122, 13, 19, .18);
  --shadow: 0 18px 55px rgba(0,0,0,.08);

  --nav-bg: rgba(255,255,255,.72);
  --nav-border: rgba(0,0,0,.08);

  --radius: 18px;
  --maxw: 1120px;
  --nav-h: 68px;
}

html[data-theme="dark"]{
  --bg: #000;                 /* AMOLED */
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.68);

  --accent: #ff2347;
  --accent-2: #ff4a6a;

  --card-bg: rgba(10,10,10,.62);
  --card-border: rgba(255, 35, 71, .26);
  --shadow: 0 22px 75px rgba(0,0,0,.72);

  --nav-bg: rgba(0,0,0,.82);
  --nav-border: rgba(255, 35, 71, .20);
}

/* =========================
   Global
========================= */
*{ box-sizing:border-box; }
html, body{ height:100%; }
body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background: var(--bg); /* putih susu */
  z-index:-3;
}
html[data-theme="dark"] body::before{
  background:
    radial-gradient(900px 650px at 18% 15%, rgba(255, 35, 71, .10), transparent 62%),
    radial-gradient(700px 500px at 85% 25%, rgba(255, 35, 71, .08), transparent 65%),
    radial-gradient(900px 650px at 60% 92%, rgba(255, 35, 71, .06), transparent 68%);
}

/* =========================
   Dark background squares
========================= */
.bg-squares{
  position:fixed;
  inset:0;
  z-index:-2;
  pointer-events:none;
  display:none;
}
html[data-theme="dark"] .bg-squares{ display:block; }
body::after{
  content:"";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;

  /* Grid lines (Light) */
  background-image:
    linear-gradient(rgba(122, 13, 19, 0.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122, 13, 19, 0.10) 1px, transparent 1px);

  background-size: 44px 44px;   /* ukuran kotak grid */
  background-position: 0 0;

  /* grid tidak terlalu “ramai” */
  opacity: .55;

  /* fokus di tengah biar terlihat profesional */
  mask-image: radial-gradient(circle at center, black 62%, transparent 100%);
}
.bg-squares span{
  position:absolute;
  left: var(--x);
  top: var(--y);
  width: var(--s);
  height: var(--s);
  border-radius: 10px;
  background: rgba(255, 35, 71, .14);
  border: 1px solid rgba(255, 35, 71, .18);
  box-shadow:
    0 0 30px rgba(255, 35, 71, .10),
    inset 0 0 18px rgba(255, 35, 71, .08);
  transform: translateZ(0);
  animation: squareFloat 10s ease-in-out infinite;
  animation-delay: var(--d);
  filter: saturate(1.05);
}
html[data-theme="dark"] body::after{
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;

  /* grid lines */
  background-image:
    linear-gradient(rgba(255, 35, 71, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 35, 71, 0.12) 1px, transparent 1px);

  background-size: 40px 40px; /* ukuran kotak grid */
  background-position: 0 0;

  /* sedikit glow halus */
  mask-image: radial-gradient(circle at center, black 60%, transparent 100%);
}
/* =========================
   Layout
========================= */
.topbar{
  position: sticky;
  top:0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: color-mix(in oklab, var(--bg) 78%, transparent);
  border-bottom: 1px solid color-mix(in oklab, var(--nav-border) 70%, transparent);
}

.topbar-inner{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color: var(--text);
  font-weight: 700;
  letter-spacing: .2px;
}
.brand .logo{
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background:
    radial-gradient(14px 14px at 30% 30%, rgba(255,255,255,.9), transparent 60%),
    linear-gradient(135deg, var(--accent), color-mix(in oklab, var(--accent-2) 70%, #000 30%));
  box-shadow: 0 14px 30px rgba(0,0,0,.12);
}
.brand small{
  display:block;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: .1px;
}

.top-actions{ display:flex; align-items:center; gap:10px; }

.icon-btn{
  border: 1px solid color-mix(in oklab, var(--card-border) 90%, transparent);
  background: color-mix(in oklab, var(--card-bg) 75%, transparent);
  box-shadow: var(--shadow);
  color: var(--text);
  border-radius: 14px;
  padding: 10px 12px;
  display:inline-flex;
  gap:8px;
  align-items:center;
  cursor:pointer;
  text-decoration:none;
  transition: transform .2s ease, border-color .2s ease;
}
.icon-btn:hover{ transform: translateY(-1px); border-color: color-mix(in oklab, var(--accent) 45%, var(--card-border)); }
.icon-btn .material-symbols-rounded{ font-size: 20px; }

.content{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px 18px calc(var(--nav-h) + 26px);
}

.section-head{
  margin: 18px 0 10px;
}
.section-head h2{
  margin: 0 0 6px;
  font-size: 22px;
  letter-spacing: .2px;
}
.section-head p{
  margin:0;
  color: var(--muted);
}

/* =========================
   Cards (glass)
========================= */
.card{
  position:relative;
  border-radius: var(--radius);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  overflow:hidden;
}

.card::before{
  content:"";
  position:absolute;
  inset: -2px;
  background:
    radial-gradient(380px 120px at 15% 0%, color-mix(in oklab, var(--accent) 18%, transparent), transparent 60%),
    radial-gradient(380px 120px at 85% 0%, color-mix(in oklab, var(--accent-2) 14%, transparent), transparent 62%);
  opacity: .9;
  pointer-events:none;
}

.card-inner{
  position:relative;
  padding: 22px;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 10px;
}
.pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid color-mix(in oklab, var(--card-border) 80%, transparent);
  background: color-mix(in oklab, var(--card-bg) 60%, transparent);
  color: var(--muted);
  font-weight: 600;
  font-size: 12px;
}
.pill .material-symbols-rounded{ font-size: 18px; color: var(--accent); }

.hero h1{
  margin: 0 0 10px;
  font-size: clamp(28px, 4.2vw, 44px);
  line-height: 1.08;
  letter-spacing: .2px;
}
.lead{
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.6;
}

.hero-grid{
  display:grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 18px;
  align-items: stretch;
}
@media (max-width: 940px){
  .hero-grid{ grid-template-columns: 1fr; }
}

.cta-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin: 14px 0 14px;
}
.btn{
  border-radius: 14px;
  padding: 11px 14px;
  border: 1px solid color-mix(in oklab, var(--card-border) 90%, transparent);
  background: color-mix(in oklab, var(--card-bg) 70%, transparent);
  color: var(--text);
  text-decoration:none;
  font-weight: 700;
  display:inline-flex;
  align-items:center;
  gap:8px;
  transition: transform .2s ease, border-color .2s ease;
}
.btn:hover{ transform: translateY(-1px); border-color: color-mix(in oklab, var(--accent) 50%, var(--card-border)); }
.btn.primary{
  background: linear-gradient(135deg, var(--accent), color-mix(in oklab, var(--accent-2) 72%, #000 28%));
  color: white;
  border-color: color-mix(in oklab, var(--accent) 55%, transparent);
}

.meta-row{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}

/* terminal box */
.terminal{
  height: 100%;
  border-radius: 16px;
  border: 1px solid color-mix(in oklab, var(--card-border) 80%, transparent);
  background: color-mix(in oklab, var(--bg) 70%, #000 30%);
  overflow:hidden;
}
html[data-theme="dark"] .terminal{
  background: rgba(10,10,10,.85);
}
.terminal-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 10px 12px;
  border-bottom: 1px solid color-mix(in oklab, var(--card-border) 70%, transparent);
  color: var(--muted);
  font-weight: 700;
  font-size: 12px;
}
.dots{ display:flex; gap:6px; }
.dot{
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,.22);
  border: 1px solid rgba(255,255,255,.10);
}
.terminal pre{
  margin:0;
  padding: 14px 14px 16px;
  overflow:auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 12.5px;
  line-height: 1.55;
  color: color-mix(in oklab, var(--text) 90%, #fff 10%);
}
code{ font-family: inherit; }

/* grids */
.grid-3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 12px;
}
@media (max-width: 980px){
  .grid-3{ grid-template-columns: 1fr; }
}

.feature h3{
  margin: 0 0 6px;
  font-size: 16px;
  letter-spacing:.2px;
}
.feature p{
  margin:0;
  color: var(--muted);
  line-height: 1.65;
  font-size: 14px;
}
.feature .f-icon{
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display:grid;
  place-items:center;
  margin-bottom: 10px;
  background: color-mix(in oklab, var(--accent) 12%, transparent);
  border: 1px solid color-mix(in oklab, var(--accent) 20%, var(--card-border));
}
.feature .f-icon .material-symbols-rounded{
  font-size: 22px;
  color: var(--accent);
}

/* code block card */
.code-block{
  margin-top: 10px;
  border-radius: 14px;
  border: 1px solid color-mix(in oklab, var(--card-border) 85%, transparent);
  background: color-mix(in oklab, var(--bg) 86%, #000 14%);
  overflow:hidden;
}
html[data-theme="dark"] .code-block{
  background: rgba(8,8,8,.9);
}
.code-block pre{
  margin:0;
  padding: 14px;
  overflow:auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 12.5px;
  line-height: 1.6;
}

.copy-row{
  display:flex;
  justify-content:flex-end;
  padding: 10px 10px 0;
}
.copy-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  border-radius: 12px;
  padding: 8px 10px;
  border: 1px solid color-mix(in oklab, var(--card-border) 85%, transparent);
  background: color-mix(in oklab, var(--card-bg) 65%, transparent);
  color: var(--text);
  font-weight: 800;
  cursor:pointer;
  transition: transform .2s ease, border-color .2s ease;
}
.copy-btn:hover{ transform: translateY(-1px); border-color: color-mix(in oklab, var(--accent) 45%, var(--card-border)); }
.copy-btn .material-symbols-rounded{ font-size: 18px; }

/* table */
.table{
  width:100%;
  border-collapse: collapse;
  overflow:hidden;
  border-radius: 14px;
  border: 1px solid color-mix(in oklab, var(--card-border) 85%, transparent);
  margin-top: 10px;
}
.table th, .table td{
  padding: 12px 12px;
  text-align:left;
  border-bottom: 1px solid color-mix(in oklab, var(--card-border) 65%, transparent);
  color: var(--text);
  font-size: 14px;
}
.table th{
  color: var(--muted);
  font-weight: 800;
  background: color-mix(in oklab, var(--card-bg) 70%, transparent);
}
.table tr:last-child td{ border-bottom:none; }

/* footer */
.footer{
  margin: 18px 0 0;
  padding: 18px 0 6px;
  color: var(--muted);
  font-size: 13px;
}

/* =========================
   Scroll reveal animations
========================= */
.reveal{
  opacity: 0;
  transform: translateY(14px) scale(.985);
  transition:
    opacity .65s ease,
    transform .65s cubic-bezier(.2,.8,.2,1);
  will-change: transform, opacity;
}
.reveal.in-view{
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* “alive” subtle breathing after in-view */
.reveal.in-view.card{
  animation: breathe 5.2s ease-in-out infinite;
}
@keyframes breathe{
  0%,100%{
    box-shadow: var(--shadow);
  }
  50%{
    box-shadow:
      0 18px 60px color-mix(in oklab, var(--accent) 10%, rgba(0,0,0,.08));
  }
}

/* respect reduced motion */
@media (prefers-reduced-motion: reduce){
  .reveal{ opacity:1; transform:none; transition:none; }
  .reveal.in-view.card{ animation:none; }
  .bg-squares span{ animation:none; }
}

/* =========================
   Bottom navbar
========================= */
.bottom-nav{
  position:fixed;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  width: min(var(--maxw), calc(100% - 24px));
  height: var(--nav-h);
  border-radius: 18px;
  background: var(--nav-bg);
  border: 1px solid var(--nav-border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display:flex;
  justify-content:space-around;
  align-items:center;
  padding: 10px;
  z-index: 60;
}

.nav-item{
  flex:1;
  height: 100%;
  border-radius: 14px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  color: var(--muted);
  text-decoration:none;
  font-weight: 800;
  transition: background .2s ease, transform .2s ease, color .2s ease, border-color .2s ease;
  border: 1px solid transparent;
}
.nav-item .material-symbols-rounded{ font-size: 22px; }

.nav-item:hover{
  transform: translateY(-1px);
  color: var(--text);
  border-color: color-mix(in oklab, var(--card-border) 85%, transparent);
  background: color-mix(in oklab, var(--card-bg) 55%, transparent);
}
.nav-item.active{
  color: var(--text);
  background: color-mix(in oklab, var(--accent) 14%, transparent);
  border-color: color-mix(in oklab, var(--accent) 35%, var(--card-border));
}

.sr-only{
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip: rect(0,0,0,0);
  white-space:nowrap;
  border:0;
}

/* =========================
   Performance mode (mobile)
========================= */
@media (max-width: 820px){
  /* blur adalah penyebab berat #1 */
  .card,
  .topbar,
  .bottom-nav{
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }

  /* shadow besar juga berat */
  .card,
  .bottom-nav,
  .icon-btn{
    box-shadow: 0 10px 28px rgba(0,0,0,.08) !important;
  }

  /* animasi “breathe” bikin render terus */
  .reveal.in-view.card{
    animation: none !important;
  }

  /* background glow kurangi */
  body::before{
    opacity: .45 !important;
  }
}