/* =====================================================
   Pak Yuda — Karya Digital dari Ruang Kelas
   Design tokens
   ===================================================== */
:root{
  --bg:            #FAFAF7;
  --surface:       #FFFFFF;
  --ink:           #17163A;
  --muted:         #6B6A85;
  --line:          #E9E7F2;

  --indigo:        #4338CA;
  --indigo-ink:    #EEECFB;
  --purple:        #7C3AED;
  --purple-ink:    #F2ECFE;
  --teal:          #0D9488;
  --teal-ink:      #E4F5F2;
  --rose:          #E11D6B;
  --rose-ink:      #FDEBF2;
  --amber:         #D97B06;
  --amber-ink:     #FDF1DF;
  --green:         #16A34A;
  --green-ink:     #E8F6EC;

  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(23,22,58,.04), 0 12px 28px -14px rgba(23,22,58,.18);

  --display: "Space Grotesk", "Inter", sans-serif;
  --body: "Inter", sans-serif;
  --mono: "IBM Plex Mono", monospace;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--body);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4{ font-family:var(--display); margin:0; letter-spacing:-0.01em; }
p{ margin:0; }
button{ font-family:var(--body); }
:focus-visible{ outline:2.5px solid var(--indigo); outline-offset:3px; }

.wrap{ max-width:1120px; margin:0 auto; padding:0 28px; }

/* ---------- Nav ---------- */
.nav{
  position:sticky; top:0; z-index:50;
  background:rgba(250,250,247,.85); backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav .wrap{ display:flex; align-items:center; justify-content:space-between; padding:16px 28px; }
.brand{ display:flex; align-items:center; gap:10px; font-family:var(--display); font-weight:700; font-size:18px; }
.brand-mark{
  width:34px; height:34px; border-radius:9px;
  background:linear-gradient(135deg,var(--indigo),var(--purple));
  display:flex; align-items:center; justify-content:center;
  color:#fff; font-family:var(--mono); font-size:13px; font-weight:600;
}
.nav-links{ display:flex; gap:28px; font-size:14.5px; color:var(--muted); }
.nav-links a:hover{ color:var(--ink); }
.nav-cta{
  background:var(--ink); color:#fff; padding:10px 18px; border-radius:100px;
  font-size:14px; font-weight:600;
}

/* ---------- Hero ---------- */
.hero{ padding:88px 0 64px; position:relative; overflow:hidden; }
.hero-bg{
  position:absolute; inset:0;
  width:100%; height:100%;
  z-index:0;
  pointer-events:none;
}
.hero .wrap{ position:relative; z-index:1; }
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--mono); font-size:12.5px; color:var(--indigo);
  background:var(--indigo-ink); padding:7px 14px; border-radius:100px;
  margin-bottom:22px;
}
.eyebrow::before{ content:"●"; font-size:8px; }
.hero h1{
  font-size:clamp(36px,5.4vw,60px); font-weight:600; line-height:1.06;
  max-width:14ch;
}
.hero .accent{ color:var(--indigo); font-style:italic; }
.hero-sub{
  margin-top:22px; font-size:18px; color:var(--muted); max-width:52ch;
}
.hero-cta{ margin-top:34px; display:flex; gap:14px; flex-wrap:wrap; }
.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:14px 26px; border-radius:100px; font-weight:600; font-size:15px;
  border:1px solid transparent; cursor:pointer; transition:transform .15s ease;
}
.btn:hover{ transform:translateY(-1px); }
.btn-primary{ background:var(--ink); color:#fff; }
.btn-ghost{ background:transparent; border-color:var(--line); color:var(--ink); }
.btn-ghost:hover{ border-color:var(--ink); }

.hero-stats{
  margin-top:64px; display:grid; grid-template-columns:repeat(4,1fr); gap:0;
  border-top:1px solid var(--line); padding-top:28px;
}
.stat b{ font-family:var(--display); font-size:30px; display:block; }
.stat span{ font-size:13.5px; color:var(--muted); }

/* ---------- Section shell ---------- */
.section{ padding:72px 0; }
.section-head{ max-width:640px; margin-bottom:44px; }
.section-tag{ font-family:var(--mono); font-size:12.5px; color:var(--muted); text-transform:uppercase; letter-spacing:.08em; }
.section-head h2{ font-size:clamp(26px,3.4vw,38px); margin-top:10px; font-weight:600; }

/* ---------- Profile ---------- */
.profile{ background:var(--surface); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.profile-grid{ display:grid; grid-template-columns:180px 1fr; gap:36px; align-items:start; }
.avatar{
  width:180px; height:180px; border-radius:22px;
  background:linear-gradient(150deg,var(--indigo),var(--purple));
  display:flex; align-items:center; justify-content:center;
  color:#fff; font-family:var(--display); font-size:56px; font-weight:700;
}
.profile-bio p{ font-size:16.5px; color:var(--muted); max-width:64ch; }
.profile-bio p + p{ margin-top:14px; }
.profile-tags{ display:flex; gap:8px; flex-wrap:wrap; margin-top:18px; }
.tag{
  font-size:12.5px; font-family:var(--mono); padding:6px 12px; border-radius:100px;
  background:var(--bg); border:1px solid var(--line); color:var(--muted);
}

/* ---------- Product grid ---------- */
.grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
  padding:26px; box-shadow:var(--shadow); transition:transform .18s ease, box-shadow .18s ease;
  display:flex; flex-direction:column; height:100%;
}
.card:hover{ transform:translateY(-4px); box-shadow:0 20px 40px -18px rgba(23,22,58,.24); }
.card-icon{
  width:48px; height:48px; border-radius:12px; display:flex; align-items:center; justify-content:center;
  margin-bottom:18px; font-size:22px;
}
.card h3{ font-size:19px; font-weight:600; }
.card-tagline{ font-size:13.5px; color:var(--muted); margin-top:4px; }
.card p.desc{ margin-top:14px; font-size:14.5px; color:var(--muted); flex-grow:1; }
.card-foot{ margin-top:20px; display:flex; align-items:center; justify-content:space-between; }
.card-badge{ font-family:var(--mono); font-size:11.5px; padding:5px 10px; border-radius:100px; }
.card-arrow{ font-size:18px; transition:transform .18s ease; }
.card:hover .card-arrow{ transform:translateX(4px); }

/* theme tints per product */
.t-indigo .card-icon,.t-indigo .card-badge{ background:var(--indigo-ink); color:var(--indigo); }
.t-purple .card-icon,.t-purple .card-badge{ background:var(--purple-ink); color:var(--purple); }
.t-teal .card-icon,.t-teal .card-badge{ background:var(--teal-ink); color:var(--teal); }
.t-rose .card-icon,.t-rose .card-badge{ background:var(--rose-ink); color:var(--rose); }
.t-amber .card-icon,.t-amber .card-badge{ background:var(--amber-ink); color:var(--amber); }
.t-green .card-icon,.t-green .card-badge{ background:var(--green-ink); color:var(--green); }

/* ---------- Contact ---------- */
.contact{ background:var(--ink); color:#fff; border-radius:28px; margin:0 28px; padding:64px 44px; }
.contact-inner{ max-width:1064px; margin:0 auto; display:grid; grid-template-columns:1.2fr .8fr; gap:40px; align-items:center; }
.contact h2{ font-size:clamp(26px,3.6vw,36px); color:#fff; max-width:16ch; }
.contact p{ margin-top:14px; color:#B9B7D6; font-size:15.5px; max-width:44ch; }
.contact-actions{ display:flex; flex-direction:column; gap:12px; }
.btn-light{ background:#fff; color:var(--ink); justify-content:center; }
.btn-outline-light{ border-color:rgba(255,255,255,.25); color:#fff; justify-content:center; }

footer{ text-align:center; padding:36px 0 48px; font-size:13px; color:var(--muted); }

/* ---------- Detail page ---------- */
.detail-hero{ padding:56px 0 44px; }
.detail-back{ display:inline-flex; align-items:center; gap:6px; font-size:14px; color:var(--muted); margin-bottom:26px; }
.detail-back:hover{ color:var(--ink); }
.detail-top{ display:grid; grid-template-columns:76px 1fr; gap:22px; align-items:flex-start; }
.detail-icon{ width:76px; height:76px; border-radius:18px; display:flex; align-items:center; justify-content:center; font-size:34px; }
.detail-top h1{ font-size:clamp(28px,4vw,42px); font-weight:600; }
.detail-tagline{ font-size:16.5px; color:var(--muted); margin-top:8px; }
.detail-price{
  font-family:var(--display); font-size:26px; font-weight:600; margin-top:16px;
}
.detail-price span{
  font-family:var(--body); font-size:14px; font-weight:500; color:var(--muted); margin-left:4px;
}
.detail-meta{ display:flex; gap:10px; flex-wrap:wrap; margin-top:18px; }

.mock{
  margin-top:44px; border-radius:20px; padding:3px;
}
.mock-inner{
  background:var(--surface); border:1px solid var(--line); border-radius:18px; padding:40px;
  display:grid; grid-template-columns:repeat(3,1fr); gap:14px;
}
.mock-block{ height:64px; border-radius:10px; background:var(--bg); border:1px solid var(--line); }
.mock-block.tall{ height:140px; grid-column:span 3; }

.feature-list{ display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-top:28px; }
.feature{ display:flex; gap:12px; align-items:flex-start; background:var(--surface); border:1px solid var(--line); border-radius:var(--radius-sm); padding:16px; }
.feature-dot{ width:22px; height:22px; border-radius:7px; flex-shrink:0; display:flex; align-items:center; justify-content:center; font-size:12px; color:#fff; }
.feature b{ font-size:14.5px; display:block; }
.feature span{ font-size:13.5px; color:var(--muted); }

.interest{ background:var(--surface); border:1px solid var(--line); border-radius:24px; padding:44px; margin-top:56px; }
.interest-grid{ display:grid; grid-template-columns:.9fr 1.1fr; gap:44px; }
.interest h2{ font-size:26px; font-weight:600; }
.interest p.lead{ color:var(--muted); margin-top:12px; font-size:15px; }
.note{
  margin-top:22px; font-size:13px; color:var(--muted); background:var(--bg); border:1px solid var(--line);
  border-radius:12px; padding:14px 16px; display:flex; gap:10px;
}

.field{ margin-bottom:16px; }
.field label{ display:block; font-size:13.5px; font-weight:600; margin-bottom:7px; }
.field input, .field textarea{
  width:100%; padding:13px 14px; border-radius:10px; border:1px solid var(--line);
  background:var(--bg); font-family:var(--body); font-size:14.5px; color:var(--ink);
}
.field input:focus, .field textarea:focus{ background:#fff; }
.field-error{ font-size:12.5px; color:var(--rose); margin-top:6px; display:none; }
.field.invalid input{ border-color:var(--rose); }
.field.invalid .field-error{ display:block; }
.submit-btn{ width:100%; justify-content:center; margin-top:6px; }

.other-products{ margin-top:16px; display:flex; gap:12px; flex-wrap:wrap; }
.chip{ font-size:13px; padding:8px 14px; border-radius:100px; border:1px solid var(--line); color:var(--muted); }
.chip:hover{ border-color:var(--ink); color:var(--ink); }

@media (max-width: 860px){
  .grid{ grid-template-columns:1fr 1fr; }
  .profile-grid{ grid-template-columns:1fr; }
  .avatar{ width:96px; height:96px; font-size:34px; }
  .hero-stats{ grid-template-columns:repeat(2,1fr); row-gap:24px; }
  .contact-inner{ grid-template-columns:1fr; }
  .contact{ margin:0 16px; padding:44px 24px; }
  .detail-top{ grid-template-columns:1fr; }
  .feature-list{ grid-template-columns:1fr; }
  .interest-grid{ grid-template-columns:1fr; }
}
@media (max-width: 600px){
  .grid{ grid-template-columns:1fr; }
  .nav-links{ display:none; }
  .wrap{ padding:0 18px; }
}

@media (prefers-reduced-motion: reduce){
  *{ scroll-behavior:auto !important; transition:none !important; }
}