/* ===== Design tokens ===== */
:root {
  --bg:#f5f6fb; --surface:#fff; --surface-2:#eceefa; --text:#0f172a; --muted:#55607a; --border:#e0e4f2;
  --brand:#4338ca; --brand-2:#6366f1; --accent:#06b6d4; --brand-contrast:#fff;
  --success:#059669; --warn:#b45309; --danger:#dc2626;
  --radius:16px; --radius-sm:10px;
  --shadow:0 1px 2px rgba(15,23,42,.05),0 8px 24px rgba(67,56,202,.06);
  --shadow-strong:0 2px 6px rgba(15,23,42,.08),0 24px 48px rgba(67,56,202,.16);
  --font-sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace; --max-w:1120px;
}

[data-theme="dark"] {
  --bg:#0a0c16; --surface:#12162a; --surface-2:#1a2038; --text:#e8ebf7; --muted:#9aa3c0; --border:#262d4a;
  --brand:#818cf8; --brand-2:#a5b4fc; --accent:#22d3ee; --brand-contrast:#0a0c16;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.35); --shadow-strong:0 2px 6px rgba(0,0,0,.5),0 24px 48px rgba(0,0,0,.55);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}
img, svg, video, canvas { max-width: 100%; display: block; }
a { color: var(--brand-2); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font: inherit; cursor: pointer; }
input, select, textarea, button { font-family: inherit; }

.skip-link {
  position: absolute; left: -9999px; top: 8px;
  background: var(--brand); color: var(--brand-contrast);
  padding: 8px 12px; border-radius: 8px; z-index: 100;
}
.skip-link:focus { left: 8px; }

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 16px;
}

/* ===== Header ===== */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 40;
}
.header-inner {
  display: flex; align-items: center; gap: 12px;
  min-height: 60px;
}
.brand {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--text); font-weight: 700; letter-spacing: -0.01em;
}
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 32px; height: 32px; border-radius: 9px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: var(--brand-contrast);
  display: grid; place-items: center;
}
.brand-name { font-size: 1.02rem; }
.primary-nav { display: none; gap: 22px; margin-left: auto; }
.primary-nav a { color: var(--muted); font-weight: 500; font-size: .95rem; }
.primary-nav a:hover { color: var(--text); text-decoration: none; }
.header-actions { display: flex; gap: 6px; margin-left: auto; }
.menu-btn { display: inline-flex; }
.icon-btn {
  width: 40px; height: 40px;
  display: inline-grid; place-items: center;
  background: transparent; border: 1px solid transparent;
  color: var(--text); border-radius: 10px;
}
.icon-btn:hover { background: var(--surface-2); }
.mobile-nav {
  display: none; flex-direction: column;
  padding: 8px 16px 16px; gap: 4px;
  border-top: 1px solid var(--border);
}
.mobile-nav.open { display: flex; }
.mobile-nav a { padding: 10px 8px; border-radius: 8px; color: var(--text); }
.mobile-nav a:hover { background: var(--surface-2); text-decoration: none; }

@media (min-width: 820px) {
  .primary-nav { display: flex; margin-left: 24px; }
  .header-actions { margin-left: auto; }
  .menu-btn { display: none; }
  .mobile-nav { display: none !important; }
  .header-inner { min-height: 68px; }
}

/* ===== Main ===== */
main { flex: 1 0 auto; padding: 24px 16px 64px; }

/* ===== Hero ===== */
.hero {
  display: grid; gap: 20px;
  padding: 32px 0 24px;
}
.hero h1 {
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  line-height: 1.15; letter-spacing: -0.02em;
  margin: 0 0 12px;
}
.hero p.lede { font-size: 1.05rem; color: var(--muted); margin: 0 0 20px; max-width: 640px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .82rem; padding: 6px 10px;
  background: var(--surface-2); color: var(--muted);
  border-radius: 999px;
}
.badge.success { color: var(--success); background: color-mix(in srgb, var(--success) 12%, transparent); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 16px; border-radius: 10px; font-weight: 600; font-size: .95rem;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  transition: transform .06s ease, background .15s ease, border-color .15s ease;
  text-decoration: none; white-space: nowrap;
}
.btn:hover { background: var(--surface-2); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--brand); color: var(--brand-contrast); border-color: var(--brand); }
.btn-primary:hover { background: var(--brand-2); border-color: var(--brand-2); }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover { filter: brightness(1.08); }
.btn-ghost { background: transparent; border-color: transparent; }
.btn-ghost:hover { background: var(--surface-2); }
.btn-sm { padding: 6px 10px; font-size: .85rem; border-radius: 8px; }

/* ===== Cards ===== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}
.card h2 { margin-top: 0; }
.card h3 { margin-top: 0; }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }
@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 960px) {
  .grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* ===== Tool cards ===== */
.tool-card {
  display: flex; flex-direction: column;
  padding: 18px; border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease;
  color: var(--text);
}
.tool-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-strong); border-color: var(--brand-2); text-decoration: none; }
.tool-icon {
  width: 40px; height: 40px; border-radius: 10px;
  display: grid; place-items: center;
  background: color-mix(in srgb, var(--brand-2) 12%, transparent);
  color: var(--brand-2); margin-bottom: 12px;
}
.tool-card h3 { margin: 0 0 4px; font-size: 1rem; }
.tool-card p { margin: 0; color: var(--muted); font-size: .9rem; }
.tool-card .tool-cat { font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-top: auto; padding-top: 10px; }

/* ===== Drop zone ===== */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 28px 16px;
  text-align: center;
  background: var(--surface);
  color: var(--muted);
  transition: border-color .15s ease, background .15s ease;
  cursor: pointer;
}
.dropzone:hover, .dropzone.drag {
  border-color: var(--brand-2);
  background: color-mix(in srgb, var(--brand-2) 6%, var(--surface));
}
.dropzone svg { margin: 0 auto 8px; }
.dropzone strong { color: var(--text); display: block; margin-bottom: 4px; }

/* ===== Form controls ===== */
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field label { font-weight: 600; font-size: .88rem; }
.field .hint { font-size: .8rem; color: var(--muted); }
input[type="text"], input[type="email"], input[type="number"], input[type="search"], input[type="url"],
select, textarea {
  width: 100%; padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text); font-size: .95rem;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--brand-2); outline-offset: 1px; border-color: var(--brand-2); }
textarea { resize: vertical; min-height: 100px; }

input[type="range"] { width: 100%; accent-color: var(--brand-2); }
.checkbox { display: inline-flex; align-items: center; gap: 8px; font-weight: 500; }
.checkbox input { width: auto; }

/* ===== Progress ===== */
.progress {
  height: 8px; border-radius: 999px;
  background: var(--surface-2); overflow: hidden;
}
.progress > span {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
  width: 0%; transition: width .2s ease;
}
.progress-label { font-size: .8rem; color: var(--muted); margin-top: 6px; }

/* ===== File list ===== */
.file-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.file-item {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  gap: 10px; align-items: center;
  padding: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.file-thumb {
  width: 56px; height: 56px;
  object-fit: cover; border-radius: 8px;
  background: var(--surface-2);
  display: grid; place-items: center;
  color: var(--muted); font-size: .7rem; overflow: hidden;
}
.file-thumb img { width: 100%; height: 100%; object-fit: cover; }
.file-meta { min-width: 0; }
.file-meta .name { font-weight: 600; font-size: .9rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-meta .stats { font-size: .78rem; color: var(--muted); margin-top: 2px; }
.file-meta .stats .save { color: var(--success); font-weight: 600; }
.file-meta .stats .grow { color: var(--warn); font-weight: 600; }
.file-actions { display: flex; gap: 4px; flex-wrap: wrap; justify-content: flex-end; }

/* ===== Stats grid ===== */
.stat-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 12px 0; }
.stat { background: var(--surface-2); border-radius: 8px; padding: 8px 10px; }
.stat .k { font-size: .72rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.stat .v { font-weight: 700; font-size: .95rem; word-break: break-word; }

/* ===== Preview ===== */
.preview-pair { display: grid; gap: 10px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .preview-pair { grid-template-columns: 1fr 1fr; } }
.preview-box {
  background: var(--surface-2); border-radius: var(--radius-sm);
  padding: 8px; min-height: 120px;
  display: grid; place-items: center; overflow: hidden;
}
.preview-box img { max-height: 260px; object-fit: contain; border-radius: 6px; }
.preview-box .label { font-size: .75rem; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 6px; }

/* ===== Toast ===== */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  background: var(--text); color: var(--bg);
  padding: 10px 16px; border-radius: 10px;
  font-size: .9rem; z-index: 200;
  box-shadow: var(--shadow-strong);
  max-width: calc(100vw - 32px);
}
.toast.error { background: var(--danger); color: #fff; }
.toast.success { background: var(--success); color: #fff; }

/* ===== Search/filter bar ===== */
.toolbar { display: grid; gap: 10px; margin-bottom: 20px; }
@media (min-width: 640px) { .toolbar { grid-template-columns: 1fr 200px; } }

/* ===== Legal content ===== */
.prose h1 { margin-top: 0; }
.prose h2 { margin-top: 1.6em; font-size: 1.15rem; }
.prose h3 { font-size: 1rem; }
.prose p, .prose li { color: var(--text); }
.prose ul { padding-left: 1.2em; }
.muted { color: var(--muted); }

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 32px 0 16px;
  margin-top: 32px;
}
.footer-grid {
  display: grid; gap: 24px;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr; } }
.footer-grid h4 { margin: 0 0 8px; font-size: .9rem; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
.footer-grid ul a { color: var(--muted); font-size: .9rem; }
.footer-grid ul a:hover { color: var(--text); }
.footer-bottom {
  margin-top: 24px; padding-top: 16px;
  border-top: 1px solid var(--border);
  display: flex; flex-wrap: wrap; gap: 8px;
  justify-content: space-between; font-size: .85rem; color: var(--muted);
}

/* ===== Utility ===== */
.hidden { display: none !important; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.row.end { justify-content: flex-end; }
.spacer { flex: 1; }
.mt-0 { margin-top: 0; }
.mt-2 { margin-top: 16px; }
.mb-0 { margin-bottom: 0; }
.text-sm { font-size: .88rem; }
.text-xs { font-size: .8rem; }
pre, code { font-family: var(--font-mono); }
code { background: var(--surface-2); padding: 1px 5px; border-radius: 4px; font-size: .88em; }
hr { border: none; border-top: 1px solid var(--border); margin: 20px 0; }

/* Stacked bar for savings */
.sizebar { height: 10px; border-radius: 999px; background: var(--surface-2); overflow: hidden; display: flex; }
.sizebar .orig { background: color-mix(in srgb, var(--muted) 40%, transparent); height: 100%; }
.sizebar .new { background: var(--success); height: 100%; }
.sizebar.grow .new { background: var(--warn); }

/* Tool page header */
.tool-head { display: flex; flex-direction: column; gap: 4px; margin-bottom: 18px; }
.tool-head h1 { margin: 0; font-size: clamp(1.35rem, 4vw, 1.75rem); letter-spacing: -0.01em; }
.tool-head p { margin: 0; color: var(--muted); }

/* Radio cards */
.radio-group { display: grid; gap: 8px; }
.radio-card {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 12px; border: 1px solid var(--border);
  border-radius: var(--radius-sm); cursor: pointer;
  background: var(--surface);
}
.radio-card:hover { border-color: var(--brand-2); }
.radio-card input[type="radio"] { margin-top: 3px; accent-color: var(--brand-2); }
.radio-card strong { display: block; }
.radio-card small { color: var(--muted); }
.radio-card.checked { border-color: var(--brand-2); background: color-mix(in srgb, var(--brand-2) 5%, var(--surface)); }
/* ===== Redesign v2 ===== */
body{background:radial-gradient(900px 420px at 85% -80px,color-mix(in srgb,var(--brand-2) 16%,transparent),transparent),radial-gradient(700px 360px at -10% 0,color-mix(in srgb,var(--accent) 12%,transparent),transparent),var(--bg);background-repeat:no-repeat}
h1,h2,h3{letter-spacing:-.02em;line-height:1.2}
.site-header{background:color-mix(in srgb,var(--surface) 82%,transparent);backdrop-filter:saturate(1.6) blur(14px);-webkit-backdrop-filter:saturate(1.6) blur(14px)}
.brand-mark{background:linear-gradient(135deg,var(--brand),var(--accent));box-shadow:0 4px 12px color-mix(in srgb,var(--brand-2) 40%,transparent)}
.primary-nav a{padding:6px 2px;border-bottom:2px solid transparent}
.primary-nav a:hover,.primary-nav a[aria-current]{border-color:var(--brand-2);color:var(--text)}
.hero{padding:48px 0 32px;text-align:center;justify-items:center}
.hero h1{font-size:clamp(2rem,6vw,3.4rem);font-weight:800;background:linear-gradient(120deg,var(--text) 30%,var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lede{font-size:1.12rem;margin-inline:auto}
.hero-actions,.hero-badges{justify-content:center}
.btn{transition:transform .15s,box-shadow .15s,background .15s}
.btn:hover{transform:translateY(-1px);text-decoration:none}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border:0;box-shadow:0 6px 18px color-mix(in srgb,var(--brand-2) 38%,transparent)}
.card,.tool-card{border-radius:var(--radius);box-shadow:var(--shadow)}
.tool-card{transition:transform .18s,box-shadow .18s,border-color .18s}
.tool-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-strong);border-color:var(--brand-2);text-decoration:none}
.tool-icon{background:linear-gradient(135deg,color-mix(in srgb,var(--brand-2) 18%,transparent),color-mix(in srgb,var(--accent) 18%,transparent));border-radius:12px}
.dropzone{border:2px dashed color-mix(in srgb,var(--brand-2) 45%,var(--border));border-radius:var(--radius);padding:40px 16px;background:color-mix(in srgb,var(--brand-2) 4%,var(--surface));transition:.15s}
.dropzone:hover,.dropzone.drag{border-color:var(--brand-2);background:color-mix(in srgb,var(--brand-2) 10%,var(--surface))}
:focus-visible{outline:3px solid color-mix(in srgb,var(--brand-2) 60%,transparent);outline-offset:2px}
.site-footer{background:var(--surface);border-top:1px solid var(--border);margin-top:48px;padding-top:32px}
.footer-grid{display:grid;gap:24px;grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}
.footer-grid ul{list-style:none;padding:0;margin:0;display:grid;gap:6px}
.footer-grid h4{margin:0 0 10px}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;padding:20px 16px;font-size:.85rem}
/* Iklan: tinggi dicadangkan agar tidak ada layout shift */
.ad-slot{margin:28px auto;max-width:970px;min-height:110px;text-align:center}
.ad-slot::before{content:"Iklan";display:block;font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:4px}
.ad-slot:not([data-active]){display:none}
/* Halaman statis / artikel */
.legal{max-width:760px;margin:0 auto;padding:40px 16px 24px}
.legal h1{font-size:clamp(1.8rem,5vw,2.5rem);margin:0 0 8px}
.legal h2{font-size:1.3rem;margin:32px 0 8px}
.legal p,.legal li{color:var(--muted);font-size:1.02rem;line-height:1.75}
.legal strong{color:var(--text)}
.crumb{font-size:.85rem;color:var(--muted)}
.updated{font-size:.85rem;color:var(--muted)}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}