:root {
  --bg-dark: #090d16;
  --bg-slate: #0f172a;
  --bg-card: #162036;
  --bg-card-hover: #1e293b;
  --bg-surface: #0b1120;
  --bg-navbar: rgba(9, 13, 22, 0.88);
  --bg-footer: #060911;
  --border-color: rgba(148, 163, 184, 0.18);
  --border-highlight: rgba(220, 38, 38, 0.55);
  --accent-primary: #dc2626;
  --accent-hover: #ef4444;
  --accent-glow: rgba(220, 38, 38, 0.28);
  --accent-blue: #2563eb;
  --accent-green: #16a34a;
  --accent-amber: #f59e0b;
  --text-main: #f8fafc;
  --text-heading: #ffffff;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --shadow-card: 0 14px 34px rgba(0, 0, 0, 0.35);
  --font-sans: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'Consolas', 'JetBrains Mono', 'Cascadia Code', monospace;
}

html[data-theme="light"] {
  --bg-dark: #f8fafc;
  --bg-slate: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-surface: #0f172a;
  --bg-navbar: rgba(255, 255, 255, 0.92);
  --bg-footer: #e2e8f0;
  --border-color: rgba(15, 23, 42, 0.12);
  --border-highlight: rgba(220, 38, 38, 0.55);
  --text-main: #0f172a;
  --text-heading: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --shadow-card: 0 12px 28px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
  transition: background-color 0.25s ease, color 0.25s ease;
  background-image:
    radial-gradient(circle at 15% 10%, rgba(220, 38, 38, 0.10), transparent 35%),
    radial-gradient(circle at 85% 20%, rgba(37, 99, 235, 0.08), transparent 35%);
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-navbar);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
  transition: background 0.25s ease;
}

.navbar::after {
  content: '';
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-primary), #f97316, var(--accent-blue));
}

.nav-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  text-decoration: none;
  color: var(--text-main);
}

.brand-logo {
  width: 46px;
  height: 46px;
  object-fit: contain;
  border-radius: 10px;
  filter: drop-shadow(0 2px 8px rgba(220, 38, 38, 0.35));
}

.brand-text-col {
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.2;
}

.brand-title {
  font-size: 1.32rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-heading);
}

.brand-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-top: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  list-style: none;
}

.nav-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.52rem 0.95rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.nav-btn:hover {
  color: var(--text-heading);
  background: rgba(148, 163, 184, 0.12);
}

.nav-btn.active {
  background: rgba(220, 38, 38, 0.14);
  color: var(--accent-primary);
  border-color: rgba(220, 38, 38, 0.38);
}

html:not([data-theme="light"]) .nav-btn.active {
  color: #fca5a5;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

/* Pill Toggle Switches (Language & Theme) */
.pill-toggle-switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  background: var(--bg-slate);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  padding: 3px;
  width: 118px;
  height: 36px;
  cursor: pointer;
  user-select: none;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.18);
}

.pill-slider {
  position: absolute;
  top: 3px;
  left: 3px;
  width: calc(50% - 3px);
  height: calc(100% - 6px);
  background: linear-gradient(135deg, var(--accent-primary), #b91c1c);
  border-radius: 999px;
  box-shadow: 0 2px 8px rgba(220, 38, 38, 0.4);
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1;
}

.pill-toggle-switch.theme-switch {
  width: 78px;
}

.pill-toggle-switch.theme-switch .pill-slider {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.38);
}

.pill-toggle-switch.theme-switch .pill-opt {
  font-size: 0.98rem;
}

.pill-toggle-switch.right-active .pill-slider {
  transform: translateX(100%);
}

.pill-opt {
  position: relative;
  z-index: 2;
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: inherit;
  font-weight: 700;
  font-size: 0.78rem;
  height: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  cursor: pointer;
  transition: color 0.2s ease;
}

.pill-opt.active {
  color: #ffffff;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.75rem 1.45rem;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.98rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), #b91c1c);
  color: #fff;
  box-shadow: 0 8px 22px var(--accent-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-hover), var(--accent-primary));
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(220, 38, 38, 0.42);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--text-muted);
}

.btn-green {
  background: linear-gradient(135deg, #16a34a, #15803d);
  color: #fff;
  box-shadow: 0 8px 22px rgba(22, 163, 74, 0.28);
}

.btn-green:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, #22c55e, #16a34a);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.86rem;
  border-radius: 8px;
}

/* Layout Containers */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 3.2rem;
}

.eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-primary);
  background: rgba(220, 38, 38, 0.12);
  border: 1px solid rgba(220, 38, 38, 0.32);
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
  margin-bottom: 0.9rem;
}

html:not([data-theme="light"]) .eyebrow {
  color: #f87171;
}

.section-title {
  font-size: 2.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.85rem;
  color: var(--text-heading);
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.08rem;
}

/* Hero Section */
.hero {
  padding: 4.5rem 0 4rem;
  border-bottom: 1px solid var(--border-color);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 3rem;
  align-items: center;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.25rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.83rem;
  font-weight: 600;
  padding: 0.32rem 0.85rem;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.pill.freeware {
  background: rgba(22, 163, 74, 0.14);
  border-color: rgba(34, 197, 94, 0.4);
  color: #16a34a;
}

html:not([data-theme="light"]) .pill.freeware {
  color: #86efac;
}

.hero-title {
  font-size: 3.05rem;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1.2rem;
  color: var(--text-heading);
}

.hero-title .gradient-text {
  background: linear-gradient(90deg, #ef4444, #f97316, #2563eb);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.12rem;
  color: var(--text-secondary);
  margin-bottom: 1.85rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-bottom: 2rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--border-color);
}

.stat-box strong {
  display: block;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-heading);
}

.stat-box span {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Mockup Window in Hero (Always dark IDE style for realism) */
.studio-preview {
  background: #0f172a;
  border: 1px solid rgba(148, 163, 184, 0.3);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.window-titlebar {
  background: #0b1120;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 3px solid var(--accent-primary);
  color: #f8fafc;
}

.window-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 0.9rem;
}

.window-brand img {
  width: 24px;
  height: 24px;
}

.window-dots {
  display: flex;
  gap: 0.4rem;
}

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.dot.red { background: #ef4444; }
.dot.yellow { background: #f59e0b; }
.dot.green { background: #22c55e; }

.window-toolbar {
  background: #1e293b;
  padding: 0.55rem 0.9rem;
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
}

.tb-chip {
  font-size: 0.76rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: 5px;
  background: #334155;
  color: #e2e8f0;
}

.tb-chip.compile { background: #16a34a; color: #fff; }
.tb-chip.run { background: #2563eb; color: #fff; }

.code-preview {
  padding: 1.15rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.6;
  background: #0f172a;
  color: #e2e8f0;
  overflow-x: auto;
}

.window-log {
  background: #090d16;
  padding: 0.75rem 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #4ade80;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
}

/* Syntax Highlight Colors */
.syn-comment { color: #6a9955; font-style: italic; }
.syn-section { color: #c586c0; font-weight: 700; }
.syn-key { color: #9cdcfe; }
.syn-str { color: #ce9178; }
.syn-macro { color: #dcdcaa; font-weight: 700; }
.syn-kw { color: #569cd6; font-weight: 700; }

/* Feature Grid (Keunggulan) */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.75rem;
  transition: all 0.22s ease;
  box-shadow: var(--shadow-card);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(220, 38, 38, 0.14);
  border: 1px solid rgba(220, 38, 38, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.1rem;
}

.feature-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.6rem;
  color: var(--text-heading);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.96rem;
}

/* Comparison Table */
.comparison-wrap {
  margin-top: 3.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.comparison-table th,
.comparison-table td {
  padding: 1rem 1.35rem;
  border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
  background: var(--bg-slate);
  font-size: 0.95rem;
  color: var(--text-heading);
}

.comparison-table th.highlight-col,
.comparison-table td.highlight-col {
  background: rgba(220, 38, 38, 0.08);
  font-weight: 700;
  color: var(--text-heading);
}

.check-yes { color: #16a34a; font-weight: 700; }
html:not([data-theme="light"]) .check-yes { color: #4ade80; }
.check-warn { color: #d97706; }
html:not([data-theme="light"]) .check-warn { color: #fbbf24; }

/* How-To Steps */
.howto-tabs {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2.2rem;
}

.tab-pill {
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  padding: 0.65rem 1.4rem;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.96rem;
  cursor: pointer;
  transition: all 0.2s;
}

.tab-pill.active {
  background: var(--accent-primary);
  color: #fff;
  border-color: var(--accent-primary);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.65rem;
  display: flex;
  gap: 1.15rem;
  box-shadow: var(--shadow-card);
}

.step-num {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent-primary), #991b1b);
  color: #fff;
  font-weight: 800;
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-body h4 {
  font-size: 1.14rem;
  margin-bottom: 0.45rem;
  color: var(--text-heading);
}

.step-body p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.script-showcase {
  background: #0b1120;
  border: 1px solid rgba(148, 163, 184, 0.25);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.script-header {
  background: #162036;
  color: #f8fafc;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
}

.script-body {
  padding: 1.35rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.65;
  overflow-x: auto;
  white-space: pre;
  color: #e2e8f0;
}

/* Download Counter & History Bar */
.download-stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.15rem;
  margin-bottom: 2rem;
}

.stat-counter-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.25rem 1.35rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-card);
}

.stat-counter-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(220, 38, 38, 0.14);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
}

.stat-counter-num {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-heading);
  line-height: 1.15;
}

.stat-counter-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 600;
}

.dl-count-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(37, 99, 235, 0.15);
  color: #3b82f6;
  border: 1px solid rgba(59, 130, 246, 0.35);
  padding: 0.22rem 0.7rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 700;
}

html:not([data-theme="light"]) .dl-count-badge {
  color: #93c5fd;
}

/* Download Release Section */
.release-hero-card {
  background: var(--bg-card);
  border: 2px solid rgba(220, 38, 38, 0.5);
  border-radius: 18px;
  padding: 2.4rem;
  box-shadow: var(--shadow-card);
  margin-bottom: 2rem;
}

.release-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--border-color);
}

.release-title-group {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

.release-title-group img {
  width: 72px;
  height: 72px;
  object-fit: contain;
}

.release-meta-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.55rem;
}

.meta-tag {
  font-size: 0.8rem;
  padding: 0.22rem 0.7rem;
  border-radius: 6px;
  background: var(--bg-slate);
  color: var(--text-secondary);
  font-weight: 600;
  border: 1px solid var(--border-color);
}

.meta-tag.free {
  background: rgba(22, 163, 74, 0.16);
  color: #16a34a;
  border-color: rgba(22, 163, 74, 0.4);
}

html:not([data-theme="light"]) .meta-tag.free {
  color: #86efac;
}

.release-download-box {
  text-align: right;
}

.release-details-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  padding-top: 1.75rem;
}

.checksum-box {
  background: #090d16;
  border: 1px solid rgba(148, 163, 184, 0.25);
  border-radius: 10px;
  padding: 0.9rem 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: #93c5fd;
  word-break: break-all;
  margin-top: 0.65rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.secondary-releases {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.sub-release-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1rem;
  box-shadow: var(--shadow-card);
}

/* Download History Log Card */
.download-history-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
}

.history-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.history-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  max-height: 220px;
  overflow-y: auto;
}

.history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0.9rem;
  border-radius: 8px;
  background: var(--bg-slate);
  font-size: 0.88rem;
  border: 1px solid var(--border-color);
}

.history-item-file {
  font-weight: 700;
  color: var(--text-heading);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.history-item-time {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Footer */
.footer {
  background: var(--bg-footer);
  padding: 3rem 0;
  color: var(--text-muted);
  font-size: 0.92rem;
  transition: background 0.25s ease;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
}

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #16a34a;
  color: #fff;
  padding: 0.8rem 1.3rem;
  border-radius: 10px;
  font-weight: 700;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  transform: translateY(120%);
  opacity: 0;
  transition: all 0.25s ease;
  z-index: 2000;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

@media (max-width: 960px) {
  .hero-grid,
  .features-grid,
  .steps-grid,
  .release-details-grid,
  .secondary-releases,
  .download-stats-bar {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 2.35rem;
  }
  .release-download-box {
    text-align: left;
  }
}