/* Hallmark · pre-emit critique: P4 H4 E4 S4 R4 V4
 * genre: modern-minimal · macrostructure: Split Studio (alternating diptych rows)
 * theme: custom · vibe: "dark teal-navy, confident, solo-engineered, chartreuse lime signal"
 * paper: oklch(15% 0.025 215) · accent: oklch(84% 0.19 112) · axes: dark / geometric-sans / chromatic-lime
 * split: hero (+ fixed nav) stays dark; every section after it runs on `.light-body`, a scoped
 *   token override to a light paper + a darker `--color-accent-deep` (needed for contrast on white)
 * nav: N1b canonical SaaS three-section · footer: Ft2 inline single line
 * enrichment: Tier-A CSS-art proof panels (module bars, flow diagram, checklist) — no fake OS/browser chrome
 * motion primitives (3 of 3): page-load reveal · CTA hover lift · nav frost-on-scroll
 * honest: pass (46, no invented stats) · chrome: pass (47, dotted title bar removed, replaced with
 *   plain typographic frame) · tokens: pass (48) · responsive: pass (49–52, reasoned not live-measured)
 * studied: no · redesigned from: Cobalt / Bento Grid / N13 build, ref: referensi.jpg (Optibiz)
 */

@import url("tokens.css");

*, *::before, *::after { box-sizing: border-box; }
html, body { overflow-x: clip; }

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink-2);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

img, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin: 0;
}

p { margin: 0; }

::selection { background: var(--color-accent); color: var(--color-accent-ink); }

:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

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

.container {
  max-width: 74rem;
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

/* ---------------------------------------------------------------- */
/* Light-body — scoped token override for sections after the hero    */
/* (referensi.jpg: dark navy hero, white/off-white content below)    */
/* ---------------------------------------------------------------- */

.light-body {
  --color-paper:      var(--color-paper-onlight);
  --color-paper-2:    var(--color-paper-2-onlight);
  --color-paper-3:    var(--color-paper-3-onlight);
  --color-rule:       var(--color-rule-onlight);
  --color-rule-2:     var(--color-rule-2-onlight);
  --color-ink:        var(--color-ink-onlight);
  --color-ink-2:       var(--color-ink-2-onlight);
  --color-muted:       var(--color-muted-onlight);
  --color-accent:      var(--color-accent-deep);
  --color-accent-soft: var(--color-accent-soft-onlight);
  --color-focus:       var(--color-focus-onlight);
  background: var(--color-paper);
  color: var(--color-ink-2);
}

/* ---------------------------------------------------------------- */
/* Reveal — the whole page-load motion engine (one orchestrated pass) */
/* ---------------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--dur-long) var(--ease-out),
              transform var(--dur-long) var(--ease-out);
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------------------------------------------------------------- */
/* Nav — N1b canonical SaaS three-section, frost-on-scroll            */
/* ---------------------------------------------------------------- */

.nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: var(--z-sticky);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--dur-short) var(--ease-out),
              border-color var(--dur-short) var(--ease-out),
              box-shadow var(--dur-short) var(--ease-out);
}
.nav.is-scrolled {
  background: var(--color-nav-scrim);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--color-rule);
  box-shadow: var(--shadow-nav);
}

.nav__inner {
  max-width: 74rem;
  margin-inline: auto;
  padding-inline: var(--page-gutter);
  height: 4rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
}

.nav__brand {
  justify-self: start;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-md);
  letter-spacing: -0.02em;
  color: var(--color-ink);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}
.nav__brand::before {
  content: "";
  width: 8px; height: 8px; border-radius: var(--radius-sm);
  background: var(--color-accent);
  flex: none;
}

.nav__center {
  justify-self: center;
  display: flex;
  gap: var(--space-lg);
}
.nav__link {
  font-size: var(--text-sm);
  color: var(--color-ink-2);
  white-space: nowrap;
  padding-block: var(--space-xs);
  position: relative;
}
.nav__link::after {
  content: "";
  position: absolute; left: 0; right: 100%; bottom: 0;
  height: 1px; background: var(--color-accent);
  transition: right var(--dur-short) var(--ease-out);
}
@media (hover: hover) and (pointer: fine) {
  .nav__link:hover::after { right: 0; }
}

.nav__right { justify-self: end; display: flex; align-items: center; gap: var(--space-sm); }

.nav__toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
  background: none; border: 1px solid var(--color-rule); border-radius: var(--radius-sm);
  color: var(--color-ink);
  cursor: pointer;
}
.nav__toggle svg { width: 18px; height: 18px; }

.nav__sheet {
  display: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding-inline: var(--space-md);
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--text-sm);
  white-space: nowrap;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--dur-short) var(--ease-out),
              border-color var(--dur-short) var(--ease-out),
              transform 100ms var(--ease-out);
}
.btn--accent {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}
@media (hover: hover) and (pointer: fine) {
  .btn--accent:hover { transform: translateY(-1.5px); background: var(--color-accent-hover); }
}
.btn--accent:active { transform: translateY(0); background: var(--color-accent-hover); }
.btn--outline {
  background: transparent;
  border-color: var(--color-rule-2);
  color: var(--color-ink-2);
  border-radius: var(--radius-sm);
}
.btn--outline:active { background: var(--color-paper-2); transform: translateY(1px); }
@media (hover: hover) and (pointer: fine) {
  .btn--outline:hover { border-color: var(--color-ink-2); background: var(--color-paper-2); }
}

@media (max-width: 60rem) {
  .nav__center { display: none; }
  .nav__toggle { display: flex; }
}

@media (max-width: 40rem) {
  .btn--accent .btn__full { display: none; }
  .btn--accent .btn__short { display: inline; }
}
.btn__short { display: none; }

/* Mobile nav sheet */
@media (max-width: 60rem) {
  .nav__sheet {
    position: fixed; inset: 4rem 0 auto 0; z-index: var(--z-dropdown);
    background: var(--color-paper-2);
    border-bottom: 1px solid var(--color-rule);
    padding: var(--space-md) var(--page-gutter) var(--space-lg);
    display: flex; flex-direction: column; gap: var(--space-2xs);
    transform: translateY(-8px);
    opacity: 0; visibility: hidden;
    transition: opacity var(--dur-short) var(--ease-out),
                transform var(--dur-short) var(--ease-out),
                visibility var(--dur-short) var(--ease-out);
  }
  .nav__sheet.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav__sheet a {
    padding-block: var(--space-sm);
    font-size: var(--text-md);
    color: var(--color-ink-2);
    border-bottom: 1px solid var(--color-rule);
  }
  @media (prefers-reduced-motion: reduce) {
    .nav__sheet { transition: opacity 150ms linear; transform: none; }
  }
}

/* ---------------------------------------------------------------- */
/* Hero — Split Studio, text left / proof panel right                 */
/* ---------------------------------------------------------------- */

.hero {
  padding-block: calc(4rem + var(--space-2xl)) var(--space-2xl);
  background: radial-gradient(120% 100% at 85% 0%, var(--color-paper-3) 0%, var(--color-paper) 62%);
}
.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: var(--space-2xl);
  align-items: center;
}
.hero__copy { max-width: 34rem; }
.hero__kicker {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  display: flex; align-items: center; gap: var(--space-xs);
  margin-block-end: var(--space-md);
}
.hero__kicker::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--color-accent);
}
.hero h1 {
  font-size: var(--text-display);
  overflow-wrap: anywhere;
  min-width: 0;
}
.hero__lede {
  margin-block-start: var(--space-lg);
  font-size: var(--text-md);
  color: var(--color-ink-2);
  max-width: 52ch;
  line-height: 1.6;
}
.hero__cta-row {
  margin-block-start: var(--space-xl);
  display: flex; flex-wrap: wrap; gap: var(--space-md);
}
.hero__status {
  margin-block-start: var(--space-lg);
  display: flex; align-items: center; gap: var(--space-xs);
  font-family: var(--font-mono); font-size: var(--text-xs);
  color: var(--color-muted);
}
.hero__status-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 0 3px var(--color-success-ring);
}

/* Proof panel — hero's right half. Tier-A CSS art, no fake OS chrome. */
.hero__proof {
  position: relative;
  padding-block-start: var(--space-lg);
}
.badge-float {
  position: absolute;
  top: -0.75rem;
  right: 1.25rem;
  z-index: var(--z-raised);
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-accent);
  color: var(--color-accent-ink);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-modal);
  transform: rotate(-2deg);
  font-family: var(--font-display);
}
.badge-float b { font-size: var(--text-lg); line-height: 1; }
.badge-float span { font-size: 0.6875rem; font-family: var(--font-body); font-weight: 500; }

.proof-panel {
  background: var(--color-paper-2);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-modal);
  transform: rotate(1.2deg);
  overflow: hidden;
}
.proof-panel__head {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-rule);
}
.proof-panel__label {
  font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-muted);
  min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.proof-panel__status {
  font-family: var(--font-mono);
  font-size: 0.6875rem; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--color-accent);
  display: flex; align-items: center; gap: var(--space-2xs);
  flex: none;
}
.proof-panel__status::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--color-accent);
}
.proof-panel__body {
  padding: var(--space-lg);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.8;
  color: var(--color-ink-2);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  margin: 0;
}
.proof-panel__prompt { color: var(--color-muted); }
.proof-panel__cmd { color: var(--color-ink); }
.proof-panel__line { color: var(--color-muted); }
.proof-panel__ok { color: var(--color-accent); }
.proof-panel__caret {
  display: inline-block; width: 0.55ch; height: 1em; background: var(--color-accent);
  margin-inline-start: var(--space-3xs); transform: translateY(2px);
  animation: caret-blink 1s steps(2) infinite;
}
@keyframes caret-blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) {
  .proof-panel__caret { animation: none; opacity: 1; }
}

@media (max-width: 60rem) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__copy { max-width: none; }
  .hero__proof { margin-block-start: var(--space-lg); }
  .badge-float { right: 0.5rem; }
}

/* ---------------------------------------------------------------- */
/* Facts strip — T4 numbered stat strip (real facts, no invented stats) */
/* ---------------------------------------------------------------- */

.facts {
  border-block: 1px solid var(--color-rule);
  padding-block: var(--space-lg);
}
.facts__row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-md);
}
.facts__item {
  font-variant-numeric: tabular-nums;
  border-inline-start: 1px solid var(--color-rule);
  padding-inline-start: var(--space-md);
}
.facts__item:first-child { border-inline-start: none; padding-inline-start: 0; }
.facts__item b {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-ink);
  line-height: 1.1;
}
.facts__item span {
  display: block;
  margin-block-start: var(--space-2xs);
  font-size: var(--text-xs);
  color: var(--color-muted);
}

@media (max-width: 60rem) {
  .facts__row { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-lg) var(--space-md); }
  .facts__item:nth-child(3) { border-inline-start: none; padding-inline-start: 0; }
}
@media (max-width: 40rem) {
  .facts__row { grid-template-columns: minmax(0, 1fr); }
  .facts__item { border-inline-start: none; padding-inline-start: 0; padding-block-start: var(--space-md); border-block-start: 1px solid var(--color-rule); }
  .facts__item:first-child { padding-block-start: 0; border-block-start: none; }
}

/* ---------------------------------------------------------------- */
/* Split rows — Split Studio's core rhythm, alternating direction     */
/* ---------------------------------------------------------------- */

.split-row {
  padding-block: var(--space-3xl);
  border-block-end: 1px solid var(--color-rule);
}
.split-row__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-2xl);
  align-items: center;
}
.split-row__copy { max-width: 34rem; }
.split-row__tag {
  display: inline-block;
  font-family: var(--font-mono); font-size: 0.6875rem; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--color-accent);
  border: 1px solid var(--color-accent); border-radius: var(--radius-sm);
  padding: var(--space-2xs) var(--space-xs);
  margin-block-end: var(--space-md);
}
.split-row h2 {
  font-size: var(--text-2xl);
  overflow-wrap: anywhere;
}
.split-row__body {
  margin-block-start: var(--space-md);
  font-size: var(--text-md);
  color: var(--color-ink-2);
  line-height: 1.65;
  max-width: 48ch;
}
.split-row__features {
  margin-block-start: var(--space-lg);
  display: grid; gap: var(--space-sm);
  list-style: none; padding-inline-start: 0;
}
.split-row__features li {
  font-size: var(--text-sm); color: var(--color-ink-2);
  padding-inline-start: var(--space-md);
  position: relative;
}
.split-row__features li::before {
  content: ""; position: absolute; left: 0; top: 0.55em;
  width: 5px; height: 5px; background: var(--color-accent);
}
.split-row__link {
  margin-block-start: var(--space-lg);
  padding-block: var(--space-xs);
  padding-inline: var(--space-md);
  border: 1px solid var(--color-rule-2);
  border-radius: var(--radius-pill);
  font-size: var(--text-sm); font-weight: 500; color: var(--color-ink);
  display: inline-flex; align-items: center; gap: var(--space-xs);
  width: fit-content;
  max-width: 100%;
  white-space: nowrap;
  transition: border-color var(--dur-short) var(--ease-out), background var(--dur-short) var(--ease-out);
}
@media (hover: hover) and (pointer: fine) {
  .split-row__link:hover { border-color: var(--color-accent); background: var(--color-accent-soft); }
}

/* -- Visual A: module bar grid (ERP) -- */
.mod-grid {
  background: var(--color-paper-2);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}
.mod-grid__head {
  font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-muted);
  padding-block-end: var(--space-md); margin-block-end: var(--space-md);
  border-block-end: 1px solid var(--color-rule);
}
.mod-grid__bars {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-sm);
}
.mod-grid__bars span {
  display: block;
  height: 2.5rem;
  border-radius: var(--radius-sm);
  background: var(--color-paper-3);
}
.mod-grid__bars span:nth-child(3n) { background: var(--color-accent-soft); }
.mod-grid__bars span.is-active { background: var(--color-accent); }
.mod-grid__caption {
  margin-block-start: var(--space-md);
  font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-muted);
}

/* -- Visual B: automation flow diagram (Otomasi AI) -- */
.flow-diagram {
  background: var(--color-paper-2);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}
.flow-diagram svg { width: 100%; height: auto; }
.flow__box { fill: var(--color-paper-3); stroke: var(--color-rule-2); stroke-width: 1.5; }
.flow__box--mid { fill: var(--color-accent-soft); stroke: var(--color-accent); }
.flow__label { font-family: var(--font-display); font-size: 11px; font-weight: 600; fill: var(--color-ink); }
.flow__sub { font-family: var(--font-mono); font-size: 8px; fill: var(--color-muted); }
.flow__arrow { fill: none; stroke: var(--color-muted); stroke-width: 1.5; stroke-linecap: round; }
.flow__arrow--live {
  stroke: var(--color-accent);
  stroke-dasharray: 5 5;
  animation: flow-move 2s linear infinite;
}
@keyframes flow-move { to { stroke-dashoffset: -20; } }
@media (prefers-reduced-motion: reduce) {
  .flow__arrow--live { animation: none; }
}

/* -- Visual C: checklist panel (studi kasus) -- */
.check-panel {
  background: var(--color-paper-2);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: grid; gap: var(--space-md);
}
.check-panel__item {
  display: flex; align-items: center; gap: var(--space-sm);
  padding-block-end: var(--space-md);
  border-block-end: 1px solid var(--color-rule);
  font-size: var(--text-sm); color: var(--color-ink-2);
}
.check-panel__item:last-child { border-block-end: none; padding-block-end: 0; }
.check-panel__item svg { width: 18px; height: 18px; flex: none; color: var(--color-accent); }

@media (max-width: 60rem) {
  .split-row__grid { grid-template-columns: 1fr; }
  .split-row--reverse .split-row__copy { order: -1; }
  .split-row__copy { max-width: none; }
}

/* Compact row — Tentang + skills, lighter padding than a full split-row */
.split-row--compact { padding-block: var(--space-2xl); }
.tag-row { display: flex; flex-wrap: wrap; gap: var(--space-xs); }
.tag {
  font-family: var(--font-mono); font-size: 0.6875rem; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--color-ink-2);
  border: 1px solid var(--color-rule-2); border-radius: var(--radius-sm);
  padding: var(--space-2xs) var(--space-xs);
}

/* ---------------------------------------------------------------- */
/* Process — F4 step sequence                                        */
/* ---------------------------------------------------------------- */

.process {
  background: var(--color-paper-2);
  padding-block: var(--space-3xl);
}
.process__head { max-width: 40ch; }
.process__head h2 { font-size: var(--text-2xl); }
.process__head p { margin-block-start: var(--space-md); color: var(--color-ink-2); font-size: var(--text-md); }

.steps {
  margin-block-start: var(--space-xl);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-lg);
}
.step {
  border-top: 1px solid var(--color-rule-2);
  padding-block-start: var(--space-md);
}
.step__num {
  font-family: var(--font-mono); font-size: var(--text-sm);
  color: var(--color-accent);
}
.step h3 {
  margin-block-start: var(--space-sm);
  font-size: var(--text-md);
}
.step p {
  margin-block-start: var(--space-sm);
  font-size: var(--text-sm);
  color: var(--color-ink-2);
  line-height: 1.6;
}

@media (max-width: 60rem) {
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 40rem) {
  .steps { grid-template-columns: minmax(0, 1fr); }
}

/* ---------------------------------------------------------------- */
/* Final CTA — three concrete channels, no fake form                 */
/* ---------------------------------------------------------------- */

.cta-final { padding-block: var(--space-3xl); }
.cta-links {
  display: grid; gap: 0;
  border-top: 1px solid var(--color-rule);
}
.cta-link {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-md);
  padding-block: var(--space-lg);
  border-bottom: 1px solid var(--color-rule);
}
.cta-link__label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.25rem, 4.5vw, var(--text-xl));
  color: var(--color-ink);
  white-space: nowrap;
  transition: color var(--dur-short) var(--ease-out);
}
.cta-link__meta {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-muted);
  white-space: nowrap;
}
.cta-link__ico {
  width: 20px; height: 20px; flex: none; color: var(--color-accent);
  transition: transform var(--dur-short) var(--ease-out);
}
@media (hover: hover) and (pointer: fine) {
  .cta-link:hover .cta-link__ico { transform: translate(3px, -3px); }
  .cta-link:hover .cta-link__label { color: var(--color-accent); }
}

@media (max-width: 40rem) {
  .cta-link { flex-direction: column; align-items: flex-start; gap: var(--space-xs); }
  .cta-link__row-end { display: flex; align-items: center; gap: var(--space-sm); }
}

/* ---------------------------------------------------------------- */
/* Footer — Ft2 inline single line                                   */
/* ---------------------------------------------------------------- */

.foot-line {
  border-top: 1px solid var(--color-rule);
}
.foot-line__inner {
  padding: var(--space-lg) var(--page-gutter);
  max-width: 74rem;
  margin-inline: auto;
  display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-sm) var(--space-md);
  font-size: var(--text-sm); color: var(--color-muted);
}
.foot-line__sep { color: var(--color-rule-2); }
.foot-line a { color: var(--color-ink-2); white-space: nowrap; }
@media (hover: hover) and (pointer: fine) {
  .foot-line a:hover { color: var(--color-accent); }
}