/* ── Font fallback — tampil dulu pakai system font, swap saat web font siap ── */
:root {
  --bg: #0a0a0f;
  --surface: #111118;
  --surface2: #1a1a24;
  --border: #2a2a38;
  --accent: #6ee7b7;
  --accent2: #818cf8;
  --accent3: #f472b6;
  --accent4: #fbbf24;
  --accent5: #22d3ee;
  --purple: #a78bfa;
  --green: #34d399;
  --text: #e2e8f0;
  --muted: #64748b;
  --body-text: #94a3b8;
  --mono: "DM Mono", "Courier New", Courier, monospace;
  --sans: "Syne", system-ui, -apple-system, sans-serif;
}

/* ── Light mode overrides ──────────────────────────────────────────────────── */
.light {
  --bg: #f1f4f8;
  --surface: #ffffff;
  --surface2: #e8ecf2;
  --border: #c8d0dc;
  --text: #0f172a;
  --muted: #475569;
  --body-text: #1e293b;
  --accent: #059669;
  --accent2: #4f46e5;
  --accent3: #db2777;
  --accent4: #d97706;
  --accent5: #0891b2;
  --purple: #7c3aed;
  --green: #059669;
}

.light body::before {
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.04) 1px, transparent 1px);
}

/* Light mode readability fixes */
.light .block p,
.light .challenge-box p {
  color: #1e293b !important;
}
.light .subtitle {
  color: #334155 !important;
}
.light .demo-card-desc {
  color: #334155 !important;
}
.light .metric-label {
  color: #334155 !important;
}
.light .case-number {
  color: #334155 !important;
}
.light .flow-arrow {
  color: #475569 !important;
}
.light .demo-feat {
  color: #334155 !important;
  border-color: #b0bac8 !important;
}
.light .connect-btn {
  color: #0f172a !important;
}
.light footer {
  color: #475569 !important;
}
.light .flow,
.light .challenge-box,
.light .metric {
  background: #f8fafc !important;
}
.light .nav-pill {
  color: #334155 !important;
}
.light .nav-pill:hover,
.light .nav-pill.active {
  background: rgba(5, 150, 105, 0.08) !important;
  color: #059669 !important;
  border-color: #059669 !important;
}
.light .link-btn:not(.primary):not(.indigo):not(.orange) {
  color: #334155 !important;
}
.light .sa-card__desc,
.light .sa-card__feat {
  color: #334155 !important;
}
.light .sa-card__meta {
  color: #475569 !important;
}

/* ── Reset ─────────────────────────────────────────────────────────────────── */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ── Base ──────────────────────────────────────────────────────────────────── */
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Grid texture */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(110, 231, 183, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(110, 231, 183, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ── Header ────────────────────────────────────────────────────────────────── */
header {
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--border);
}

.tag {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.tag::before {
  content: "//";
  opacity: 0.5;
}

h1 {
  font-size: clamp(32px, 6vw, 52px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
h1 span {
  color: var(--accent);
}

.subtitle {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
  max-width: 560px;
}

/* ── About section ─────────────────────────────────────────────────────────── */
.about-section {
  padding: 48px 0;
  border-bottom: 1px solid var(--border);
}

.about-bio-wrap {
  margin-bottom: 32px;
}

.about-bio-wrap .tag {
  margin-bottom: 14px;
}

.about-text {
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.9;
  color: var(--body-text);
  font-weight: 300;
  max-width: 900px;
}

/* ── Nav ───────────────────────────────────────────────────────────────────── */
.nav-wrapper {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(10, 10, 15, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.light .nav-wrapper {
  background: rgba(241, 244, 248, 0.92);
}
.nav-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 8px 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: nowrap;
}

.nav {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  flex: 1;
}

.nav-pill {
  font-family: var(--mono);
  font-size: 11px;
  padding: 5px 12px;
  border-radius: 100px;
  border: 1px solid var(--border);
  color: var(--muted);
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  white-space: nowrap;
}
.nav-pill:hover,
.nav-pill.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(110, 231, 183, 0.07);
}

/* ── Theme / Lang toggle ───────────────────────────────────────────────────── */
.theme-toggle {
  appearance: none;
  -webkit-appearance: none;
  outline: none;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 100px;
  cursor: pointer;
  display: flex;
  align-items: center;
  padding: 3px;
  gap: 2px;
  transition: all 0.25s;
  flex-shrink: 0;
}
.theme-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.theme-toggle .t-opt {
  font-family: var(--mono);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 100px;
  display: flex;
  align-items: center;
  gap: 5px;
  color: var(--muted);
  transition: all 0.2s;
  white-space: nowrap;
  line-height: 1;
  user-select: none;
}
.theme-toggle .t-opt.active {
  background: var(--accent);
  color: #0a0a0f;
  font-weight: 500;
}
.light .theme-toggle .t-opt.active {
  color: #fff;
}

/* ── Case Study sections ───────────────────────────────────────────────────── */
.case {
  margin-top: 64px;
  opacity: 0;
  transform: translateY(24px);
  animation: fadeUp 0.5s ease forwards;
}
.case:nth-child(1) {
  animation-delay: 0.1s;
}
.case:nth-child(2) {
  animation-delay: 0.2s;
}
.case:nth-child(3) {
  animation-delay: 0.3s;
}
.case:nth-child(4) {
  animation-delay: 0.4s;
}
.case:nth-child(5) {
  animation-delay: 0.5s;
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.case-header {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 32px;
}

.case-number {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  min-width: 28px;
  padding-top: 4px;
}

.case-title-wrap {
  flex: 1;
}

.case-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.case-title {
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.case-body {
  border-left: 1px solid var(--border);
  margin-left: 48px;
  padding-left: 28px;
}

/* ── Blocks ────────────────────────────────────────────────────────────────── */
.block {
  margin-bottom: 28px;
}

.block-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.block-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
  max-width: 80px;
}

.block p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--body-text);
  font-family: var(--mono);
  font-weight: 300;
}

/* ── Badges ────────────────────────────────────────────────────────────────── */
.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge {
  font-family: var(--mono);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid;
}

/* ── Flow diagram ──────────────────────────────────────────────────────────── */
.flow {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px 24px;
  margin-top: 4px;
  overflow-x: auto;
}

.flow-row {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  min-width: max-content;
}

.flow-node {
  font-family: var(--mono);
  font-size: 11px;
  padding: 8px 14px;
  border-radius: 6px;
  white-space: nowrap;
  font-weight: 500;
}

.flow-arrow {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  padding: 0 6px;
}

/* ── Challenge box ─────────────────────────────────────────────────────────── */
.challenge-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid;
  border-radius: 0 6px 6px 0;
  padding: 14px 18px;
  margin-top: 4px;
}
.challenge-box p {
  font-size: 13px;
}

/* ── Metrics ───────────────────────────────────────────────────────────────── */
.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 4px;
}

.metric {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  text-align: center;
}

.metric-value {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.metric-label {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.05em;
  line-height: 1.4;
}

/* ── Divider ───────────────────────────────────────────────────────────────── */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 64px 0 0;
}

/* ── Color themes per case ─────────────────────────────────────────────────── */
/* Case 01 — green (POS Sync) */
.c1 .case-label,
.c1 .block-label {
  color: var(--accent);
}
.c1 .badge {
  border-color: rgba(110, 231, 183, 0.3);
  color: var(--accent);
  background: rgba(110, 231, 183, 0.05);
}
.c1 .challenge-box {
  border-left-color: var(--accent);
}
.c1 .metric-value {
  color: var(--accent);
}
.c1 .flow-node {
  background: rgba(110, 231, 183, 0.1);
  border: 1px solid rgba(110, 231, 183, 0.25);
  color: var(--accent);
}

/* Case 02 — indigo (WAC) */
.c2 .case-label,
.c2 .block-label {
  color: var(--accent2);
}
.c2 .badge {
  border-color: rgba(129, 140, 248, 0.3);
  color: var(--accent2);
  background: rgba(129, 140, 248, 0.05);
}
.c2 .challenge-box {
  border-left-color: var(--accent2);
}
.c2 .metric-value {
  color: var(--accent2);
}
.c2 .flow-node {
  background: rgba(129, 140, 248, 0.1);
  border: 1px solid rgba(129, 140, 248, 0.25);
  color: var(--accent2);
}

/* Case 03 — pink (Licensing) */
.c3 .case-label,
.c3 .block-label {
  color: var(--accent3);
}
.c3 .badge {
  border-color: rgba(244, 114, 182, 0.3);
  color: var(--accent3);
  background: rgba(244, 114, 182, 0.05);
}
.c3 .challenge-box {
  border-left-color: var(--accent3);
}
.c3 .metric-value {
  color: var(--accent3);
}
.c3 .flow-node {
  background: rgba(244, 114, 182, 0.1);
  border: 1px solid rgba(244, 114, 182, 0.25);
  color: var(--accent3);
}

/* Case 04 — cyan (Obfuscation) — was c5 */
.c4 .case-label,
.c4 .block-label {
  color: var(--accent5);
}
.c4 .badge {
  border-color: rgba(34, 211, 238, 0.3);
  color: var(--accent5);
  background: rgba(34, 211, 238, 0.05);
}
.c4 .challenge-box {
  border-left-color: var(--accent5);
}
.c4 .metric-value {
  color: var(--accent5);
}
.c4 .flow-node {
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.25);
  color: var(--accent5);
}

/* Case 05 — yellow (Hybrid Desktop) — was c4 */
.c5 .case-label,
.c5 .block-label {
  color: var(--accent4);
}
.c5 .badge {
  border-color: rgba(251, 191, 36, 0.3);
  color: var(--accent4);
  background: rgba(251, 191, 36, 0.05);
}
.c5 .challenge-box {
  border-left-color: var(--accent4);
}
.c5 .metric-value {
  color: var(--accent4);
}
.c5 .flow-node {
  background: rgba(251, 191, 36, 0.1);
  border: 1px solid rgba(251, 191, 36, 0.25);
  color: var(--accent4);
}

/* ── Link buttons ──────────────────────────────────────────────────────────── */
.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.link-btn {
  font-family: var(--mono);
  font-size: 11px;
  padding: 7px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  color: var(--muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}
.link-btn:hover {
  color: var(--text);
  border-color: #555;
  background: var(--surface);
}
.link-btn.primary {
  border-color: rgba(110, 231, 183, 0.4);
  color: var(--accent);
  background: rgba(110, 231, 183, 0.05);
}
.link-btn.primary:hover {
  background: rgba(110, 231, 183, 0.1);
}
.link-btn.indigo {
  border-color: rgba(129, 140, 248, 0.4);
  color: var(--accent2);
  background: rgba(129, 140, 248, 0.05);
}
.link-btn.indigo:hover {
  background: rgba(129, 140, 248, 0.1);
}
.link-btn.orange {
  border-color: rgba(249, 115, 22, 0.4);
  color: #f97316;
  background: rgba(249, 115, 22, 0.05);
}
.link-btn.orange:hover {
  background: rgba(249, 115, 22, 0.1);
}

/* ── Demo section ──────────────────────────────────────────────────────────── */
.demo-section {
  margin-top: 64px;
  opacity: 0;
  transform: translateY(24px);
  animation: fadeUp 0.5s ease forwards;
  animation-delay: 0.05s;
}

.section-header {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 0;
}
.section-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  padding-top: 4px;
  min-width: 28px;
}
.section-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.section-title {
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.section-sub {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  margin-top: 8px;
  line-height: 1.6;
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 16px;
  margin-left: 48px;
}

.demo-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px;
  text-decoration: none;
  transition: all 0.2s;
  display: block;
}
.demo-card:hover {
  border-color: #555;
  transform: translateY(-2px);
}

.demo-card-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.demo-card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}
.demo-card-desc {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 14px;
}

.demo-feats {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}
.demo-feat {
  font-family: var(--mono);
  font-size: 10px;
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--muted);
}

.demo-url {
  font-family: var(--mono);
  font-size: 10px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 6px;
}

.demo-card.akun .demo-card-tag,
.demo-card.akun .demo-url {
  color: #f97316;
}
.demo-card.pos .demo-card-tag,
.demo-card.pos .demo-url {
  color: var(--accent2);
}
.demo-card.full .demo-card-tag,
.demo-card.full .demo-url {
  color: var(--accent);
}

/* ── SA Cards ──────────────────────────────────────────────────────────────── */
.sa-list {
  margin-left: 48px;
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sa-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--purple);
  border-radius: 0 10px 10px 0;
  padding: 22px 24px;
}

.sa-card--purple {
  border-left-color: var(--purple);
}
.sa-card--green {
  border-left-color: var(--green);
}
.sa-card--yellow {
  border-left-color: var(--accent4);
}
.sa-card--pink {
  border-left-color: var(--accent3);
}

.sa-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.sa-card__label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.sa-card--purple .sa-card__label {
  color: var(--purple);
}
.sa-card--green .sa-card__label {
  color: var(--green);
}
.sa-card--yellow .sa-card__label {
  color: var(--accent4);
}
.sa-card--pink .sa-card__label {
  color: var(--accent3);
}

.sa-card__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.sa-card__badge {
  font-family: var(--mono);
  font-size: 10px;
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid;
  white-space: nowrap;
}
.sa-card--purple .sa-card__badge {
  border-color: rgba(167, 139, 250, 0.3);
  color: var(--purple);
  background: rgba(167, 139, 250, 0.05);
}
.sa-card--green .sa-card__badge {
  border-color: rgba(52, 211, 153, 0.3);
  color: var(--green);
  background: rgba(52, 211, 153, 0.05);
}
.sa-card--yellow .sa-card__badge {
  border-color: rgba(251, 191, 36, 0.3);
  color: var(--accent4);
  background: rgba(251, 191, 36, 0.05);
}
.sa-card--pink .sa-card__badge {
  border-color: rgba(244, 114, 182, 0.3);
  color: var(--accent3);
  background: rgba(244, 114, 182, 0.05);
}

.sa-card__desc {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 14px;
}

.sa-card__feats {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}
.sa-card__feat {
  font-family: var(--mono);
  font-size: 10px;
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--muted);
}

.sa-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.sa-card__meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.sa-card__meta span {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
}

.sa-card__link {
  font-family: var(--mono);
  font-size: 10px;
  text-decoration: none;
  padding: 4px 10px;
  border-radius: 4px;
}
.sa-card--pink .sa-card__link {
  color: var(--accent3);
  border: 1px solid rgba(244, 114, 182, 0.3);
  background: rgba(244, 114, 182, 0.05);
}

.sa-section-label {
  color: var(--purple);
}

/* ── Connect section ───────────────────────────────────────────────────────── */
.connect-section {
  margin-top: 64px;
  border-top: 1px solid var(--border);
  padding-top: 48px;
}

.connect-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.connect-title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.connect-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.connect-btn {
  font-family: var(--mono);
  font-size: 12px;
  padding: 9px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
}
.connect-btn:hover {
  background: var(--surface2);
  border-color: #555;
}
.connect-btn svg,
.connect-btn i {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ── Utility ───────────────────────────────────────────────────────────────── */
.nav-controls {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  gap: 6px;
  flex-shrink: 0;
  align-items: center;
}
.flow-spacer {
  height: 10px;
}
.divider--top {
  margin-top: 64px;
}

/* ── Performance hints ─────────────────────────────────────────────────────── */
.back-to-top {
  will-change: opacity, transform;
}
.progress-bar {
  will-change: width;
}

/* ── Reading progress bar ──────────────────────────────────────────────────── */
.progress-bar {
  position: absolute;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: var(--accent);
  transition: width 0.1s linear;
  z-index: 100;
  border-radius: 0 2px 2px 0;
  pointer-events: none;
}

/* ── Back to top button ────────────────────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 200;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity 0.25s ease,
    transform 0.25s ease,
    border-color 0.2s,
    color 0.2s;
  pointer-events: none;
}
.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.back-to-top:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(110, 231, 183, 0.07);
}

@media (max-width: 600px) {
  .back-to-top {
    bottom: 20px;
    right: 20px;
  }
}

/* ── Footer ────────────────────────────────────────────────────────────────── */
footer {
  padding: 32px 0 48px;
  text-align: center;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
}

/* ── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .case-body {
    margin-left: 0;
    padding-left: 16px;
  }
  .case-header {
    gap: 12px;
  }
  .demo-grid {
    grid-template-columns: 1fr;
    margin-left: 0;
  }
  .sa-list {
    margin-left: 0;
  }
  .sa-card__header {
    flex-direction: column;
  }
}

/* ── Custom Tooltip ────────────────────────────────────────────────────────── */
#custom-tooltip {
  position: absolute;
  z-index: 9999;
  pointer-events: none;

  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  line-height: 1.4;
  white-space: nowrap;

  color: var(--text);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;

  box-shadow:
    0 4px 16px rgba(0, 0, 0, 0.3),
    0 1px 4px rgba(0, 0, 0, 0.2);

  /* Accent left-border tipis agar on-brand */
  border-left: 2px solid var(--accent);

  opacity: 0;
  transform: translateY(4px);
  transition:
    opacity 0.15s ease,
    transform 0.15s ease;
}

#custom-tooltip.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Flip arah animasi saat posisi bottom */
#custom-tooltip[data-placement="bottom"] {
  transform: translateY(-4px);
}
#custom-tooltip[data-placement="bottom"].visible {
  transform: translateY(0);
}

/* Arrow — segitiga kecil menghadap target */
#custom-tooltip::before {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  pointer-events: none;
}

#custom-tooltip[data-placement="top"]::before,
#custom-tooltip:not([data-placement])::before {
  bottom: -10px;
  border-top-color: var(--border);
}

#custom-tooltip[data-placement="bottom"]::before {
  top: -10px;
  border-bottom-color: var(--border);
}

/* Light mode overrides */
.light #custom-tooltip {
  box-shadow:
    0 4px 16px rgba(0, 0, 0, 0.12),
    0 1px 4px rgba(0, 0, 0, 0.08);
}

/* Sembunyikan di layar sentuh — tooltip tidak relevan */
@media (hover: none) {
  #custom-tooltip {
    display: none;
  }
}