:root {
  --paper: #fcfbfa;
  --paper-subtle: #f5f2eb;
  --ink: #191c1b;
  --ink-secondary: #424945;
  --muted: #626a66;
  --rule: #e1ddd5;
  --rule-strong: #b2aca0;
  --accent: #1e4638;
  --accent-soft: #ebf2ee;
  --accent-muted: #3d6859;
  --field: #ffffff;
  --font-poppins: 'Poppins', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, SF Mono, Menlo, Consolas, Liberation Mono, monospace;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-poppins);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.loading-screen {
  position: fixed;
  z-index: 1000;
  inset: 0;
  display: grid;
  place-items: center;
  background: var(--paper);
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.loading-screen.is-hidden {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

.loading-title {
  margin: 0;
  color: var(--ink);
  font-size: 1.25rem;
  font-weight: 600;
}

.wrap {
  width: min(100% - 2.5rem, 920px);
  margin-inline: auto;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  padding: 0.75rem 1.25rem;
  background: var(--ink);
  color: var(--paper);
  font-weight: 600;
  z-index: 100;
  text-decoration: none;
}

.skip-link:focus {
  left: 0;
}

/* Masthead */
.masthead {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 86% 20%, rgba(108, 151, 129, 0.22), transparent 34%),
    var(--accent);
  color: #ffffff;
}

.masthead::after {
  position: absolute;
  top: -8rem;
  right: max(calc((100vw - 920px) / 2 - 5rem), -8rem);
  width: 23rem;
  height: 23rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  box-shadow: 0 0 0 2.5rem rgba(255, 255, 255, 0.025), 0 0 0 5rem rgba(255, 255, 255, 0.02);
  content: "";
  pointer-events: none;
}

.masthead .wrap {
  position: relative;
  z-index: 1;
  padding: 3.25rem 0 2.75rem;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1rem;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.kicker::before {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: #c3d9c9;
  content: "";
}

h1 {
  margin: 0;
  font-family: var(--font-poppins);
  font-size: clamp(2.1rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1.12;
  color: #ffffff;
}

h1 span {
  color: #c3d9c9;
}

.lede {
  max-width: 55ch;
  margin: 1rem 0 1.5rem;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.98rem;
  line-height: 1.65;
}

.masthead-phases {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.masthead-phases > span {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.7rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 600;
}

.phase-classes {
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.7rem;
  font-weight: 400;
}

/* Controls Form */
.controls {
  display: grid;
  grid-template-columns: 12rem minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 1.25rem 1.5rem;
  padding: 1.75rem 0 1.5rem;
  border-bottom: 1px solid var(--rule);
  align-items: start;
}

.field {
  display: flex;
  flex-direction: column;
}

.field label {
  margin-bottom: 0.45rem;
  color: var(--accent-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

select,
input[type="search"] {
  width: 100%;
  height: 2.9rem;
  padding: 0.6rem 0.85rem;
  border: 1px solid #d5ded8;
  border-radius: 9px;
  background-color: #ffffff;
  color: var(--ink);
  font-family: var(--font-poppins);
  font-size: 0.88rem;
  line-height: 1.4;
  appearance: none;
  -webkit-appearance: none;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%231e4638' d='m1 1 5 5 5-5' stroke='%231e4638' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 12px 8px;
  padding-right: 2.5rem;
  cursor: pointer;
}

select:hover,
input[type="search"]:hover {
  border-color: #91a99a;
}

select:focus,
input[type="search"]:focus {
  border-color: var(--accent);
  outline: none;
  box-shadow: 0 0 0 3px rgba(30, 70, 56, 0.13);
}

.hint {
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.4;
}

/* Status Bar */
.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 1.25rem 0 0;
  padding: 0.75rem 1rem;
  background: var(--paper-subtle);
  border: 1px solid var(--rule);
  font-size: 0.86rem;
  color: var(--ink-secondary);
  border-radius: 4px;
}

.status {
  margin: 0;
  font-weight: 500;
}

.status strong {
  color: var(--ink);
  font-weight: 600;
}

/* Results Section */
#hasil {
  margin-top: 0.5rem;
}

#hasil:focus {
  outline: none;
}

/* Source PDF */
.reference {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 2px solid var(--rule);
}

.reference-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.reference-head h2 {
  margin: 0.25rem 0 0;
  font-size: 1.35rem;
  font-weight: 600;
  line-height: 1.3;
}

.reference-link {
  color: var(--accent);
  font-size: 0.86rem;
  font-weight: 600;
}

.reference-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.reference-viewer {
  display: block;
  width: 100%;
  height: clamp(32rem, 75vh, 56rem);
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: #ffffff;
}

.reference-mobile {
  display: none;
}

.reference-mobile-link {
  display: inline-flex;
  justify-content: center;
  min-width: 9rem;
  padding: 0.65rem 1rem;
  border-radius: 4px;
  background: var(--accent);
  color: #ffffff;
  font-size: 0.86rem;
  font-weight: 600;
  text-decoration: none;
}

.reference-mobile-link:hover {
  background: var(--accent-muted);
}

.reference-mobile-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Subject Article */
.subject {
  padding: 2.25rem 0 1.25rem;
  border-bottom: 2px solid var(--rule);
}

.subject:last-child {
  border-bottom: 0;
}

.subject-head {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--rule);
}

.subject-head h2 {
  margin: 0;
  font-family: var(--font-poppins);
  font-size: clamp(1.35rem, 3vw, 1.7rem);
  font-weight: 600;
  line-height: 1.3;
  color: var(--ink);
}

.subject-meta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  color: var(--accent-muted);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.intro {
  max-width: 72ch;
  margin: 1.25rem 0 0;
  padding: 0.85rem 1.15rem;
  background: var(--paper-subtle);
  border-left: 3px solid var(--accent-muted);
  color: var(--ink-secondary);
  font-size: 0.94rem;
  line-height: 1.65;
  border-radius: 0 4px 4px 0;
}

/* Element Lists */
.elements {
  margin-top: 1.75rem;
}

.element {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
}

.element:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.element h3,
.element h4 {
  margin: 0 0 0.5rem;
  line-height: 1.4;
}

.element h3 {
  font-family: var(--font-poppins);
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--ink);
}

.element h4 {
  font-family: var(--font-poppins);
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--ink);
}

.num {
  display: inline-block;
  margin-right: 0.5rem;
  padding: 0.1rem 0.4rem;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.82em;
  font-weight: 700;
  letter-spacing: -0.02em;
  border: 1px solid var(--rule);
  border-radius: 3px;
}

.element p {
  max-width: 74ch;
  margin: 0;
  color: var(--ink);
  font-size: 0.96rem;
  line-height: 1.7;
}

/* Sub-elements */
.element-sub {
  margin-left: 1.75rem;
  padding: 0.25rem 0 0.25rem 1.15rem;
  border-top: 0;
  border-left: 2px solid var(--rule-strong);
}

.element-sub + .element-sub {
  margin-top: 1.15rem;
}

.element-sub h4 {
  font-size: 0.94rem;
}

.empty {
  color: var(--muted);
  font-style: italic;
}

/* Availability & Notices */
.availability {
  max-width: 75ch;
  margin: 2rem 0 1rem;
  padding: 0.85rem 1.1rem;
  background: var(--paper-subtle);
  border: 1px solid var(--rule);
  color: var(--ink-secondary);
  font-size: 0.84rem;
  line-height: 1.55;
  border-radius: 4px;
}

.notice {
  margin: 2rem 0;
  padding: 1.35rem 1.5rem;
  background: var(--paper-subtle);
  border: 1px solid var(--rule);
  border-left: 4px solid var(--accent);
  border-radius: 0 4px 4px 0;
}

.notice h2 {
  margin: 0;
  font-family: var(--font-poppins);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--ink);
}

.notice p {
  max-width: 70ch;
  margin: 0.5rem 0 0;
  color: var(--ink-secondary);
  font-size: 0.95rem;
}

.notice-note {
  color: var(--muted);
  font-size: 0.86rem;
}

/* Footer */
.site-footer {
  margin-top: 3.5rem;
  padding: 2rem 0 3.5rem;
  border-top: 2px solid var(--ink);
  background: var(--paper-subtle);
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.6;
}

.site-footer p {
  max-width: 80ch;
  margin: 0.35rem 0;
}

/* Responsive */
@media (max-width: 768px) {
  .controls {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .status-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .element-sub {
    margin-left: 0.85rem;
    padding-left: 0.85rem;
  }

  .masthead .wrap {
    padding: 2.5rem 0 2rem;
  }

  .masthead::after {
    right: -15rem;
  }

  .masthead-phases {
    gap: 0.45rem;
  }

  .masthead-phases > span {
    gap: 0.35rem;
    padding: 0.3rem 0.55rem;
    font-size: 0.7rem;
  }

  .phase-classes {
    font-size: 0.65rem;
  }

  .reference-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .reference-viewer {
    display: none;
  }

  .reference-mobile {
    display: block;
    padding: 1.25rem;
    border: 1px solid var(--rule);
    border-radius: 4px;
    background: var(--paper-subtle);
  }

  .reference-mobile p {
    margin: 0 0 1rem;
    color: var(--ink-secondary);
    font-size: 0.88rem;
    line-height: 1.55;
  }
}

/* Print Friendly */
@media print {
  body {
    background: #ffffff;
    font-size: 11pt;
    line-height: 1.5;
  }

  .loading-screen {
    display: none;
  }

  .masthead {
    color: #000000;
    background: transparent;
  }

  .masthead h1,
  .masthead .kicker,
  .masthead .lede,
  .masthead-phases > span {
    color: #000000;
  }

  .masthead::after,
  .kicker::before,
  .masthead-phases {
    display: none;
  }

  .controls,
  .skip-link,
  .status-bar,
  .reference {
    display: none;
  }

  .subject {
    page-break-inside: avoid;
    border-bottom: 1pt solid #ccc;
  }

  .num {
    background: transparent;
    border: 0;
    padding: 0;
  }

  .intro,
  .notice {
    background: transparent;
  }
}

@media (prefers-reduced-motion: reduce) {
  .loading-screen {
    transition: none;
  }
}