@font-face {
  font-family: "Rajdhani";
  src: url("../fonts/Rajdhani-Medium.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Rajdhani";
  src: url("../fonts/Rajdhani-SemiBold.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Rajdhani";
  src: url("../fonts/Rajdhani-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #081019;
  --bg-1: #0c1a26;
  --surface: #0f2130;
  --surface-2: #142c3e;
  --border: rgba(50, 200, 200, 0.16);
  --border-strong: rgba(50, 200, 200, 0.34);

  --navy: #194b64;
  --cyan: #32c8c8;
  --cyan-soft: rgba(50, 200, 200, 0.14);
  --silver: #c8c8c8;

  --ok: #3ddc97;
  --ok-soft: rgba(61, 220, 151, 0.14);

  --fg: #eaf3f5;
  --fg-muted: #93aab5;
  --fg-faint: #526876;

  --font-display: "Rajdhani", "Arial Narrow", system-ui, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.75rem;
  --space-4: 3rem;
  --space-5: 5rem;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1100px 600px at 82% -10%, var(--bg-1), transparent 60%),
    var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

.grid-overlay {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.5;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(1200px 900px at 70% 10%, black, transparent 75%);
}

.glow {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(
    640px circle at var(--x, 70%) var(--y, 20%),
    var(--cyan-soft),
    transparent 60%
  );
  transition: opacity 0.4s ease;
}

.frame {
  position: fixed;
  z-index: 3;
  width: 28px;
  height: 28px;
  pointer-events: none;
  border-color: var(--border-strong);
  border-style: solid;
  border-width: 0;
  opacity: 0;
  animation: rise 1s ease 0.15s forwards;
}
.frame-tl { top: 18px; left: 18px; border-top-width: 2px; border-left-width: 2px; }
.frame-tr { top: 18px; right: 18px; border-top-width: 2px; border-right-width: 2px; }
.frame-bl { bottom: 18px; left: 18px; border-bottom-width: 2px; border-left-width: 2px; }
.frame-br { bottom: 18px; right: 18px; border-bottom-width: 2px; border-right-width: 2px; }

.page {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
  max-width: 1120px;
  margin: 0 auto;
  gap: var(--space-5);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  opacity: 0;
  animation: rise 0.7s ease forwards;
  width: fit-content;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  opacity: 0;
  animation: rise 0.7s ease 0.05s forwards;
}

.nav-link {
  position: relative;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.03em;
  color: var(--fg);
  text-decoration: none;
  padding: 0.35rem 0.1rem;
  border-bottom: 2px solid transparent;
  text-shadow: 0 0 2px var(--cyan), 0 0 7px var(--cyan-soft);
  transition: color 0.2s ease, border-color 0.2s ease, text-shadow 0.2s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  text-shadow: 0 0 3px var(--cyan), 0 0 12px var(--cyan-soft);
}

.nav-link.active {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.nav-item {
  position: relative;
  display: flex;
  align-items: center;
}

.nav-menu {
  position: absolute;
  top: 100%;
  left: 0;
  padding-top: var(--space-1);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s ease, visibility 0.15s ease;
  z-index: 30;
}

.nav-item:hover .nav-menu,
.nav-item:focus-within .nav-menu {
  opacity: 1;
  visibility: visible;
}

.nav-menu-panel {
  min-width: 11rem;
  padding: 0.3rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 2px solid var(--cyan);
  border-radius: 4px;
}

.nav-menu-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: 0.45rem 0.6rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  color: var(--fg-faint);
  border-radius: 3px;
  white-space: nowrap;
  cursor: not-allowed;
}

.nav-menu-link .tag {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.brand-mark {
  width: 2.5rem;
  height: 2.5rem;
  flex-shrink: 0;
  filter: drop-shadow(0 0 10px var(--cyan-soft));
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.05rem;
  letter-spacing: 0.03em;
  color: var(--fg-muted);
}

.brand-name strong {
  color: var(--fg);
  font-weight: 700;
}

/* hero */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 260px);
  align-items: center;
  gap: var(--space-5);
  opacity: 0;
  animation: rise 0.8s ease 0.1s forwards;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
  max-width: 40rem;
}

.hero-emblem {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-emblem img {
  width: 100%;
  max-width: 220px;
  height: auto;
  animation: emblem-glow 2s ease-in-out infinite;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--border-strong);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan);
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px 1px var(--cyan);
  animation: pulse 2.4s ease-in-out infinite;
  display: inline-block;
}

.hero-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  line-height: 1.05;
  letter-spacing: 0.01em;
  text-wrap: balance;
}

.hero-lead {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--fg-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.version-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  border: 1px solid var(--border-strong);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--cyan);
}

.version-badge .dot {
  animation: pulse 2.4s ease-in-out infinite;
}

/* sections */

.section {
  opacity: 0;
  animation: rise 0.8s ease forwards;
}

.section-head {
  margin: 0 0 var(--space-3);
}

.section-eyebrow {
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.6rem;
  letter-spacing: 0.02em;
  color: var(--fg);
}

/* features */

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-2);
}

.feature-card {
  padding: var(--space-3);
  background: transparent;
  border: 1px solid var(--border);
  border-top: 2px solid var(--cyan);
  border-radius: 6px;
}

.feature-card h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--fg);
}

.feature-card p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--fg-muted);
}

/* faq */

.faq {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.faq-item {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: var(--space-2) var(--space-3);
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--fg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 1.2rem;
  color: var(--cyan);
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item summary:hover {
  color: var(--cyan);
}

.faq-item p {
  margin: var(--space-2) 0 0;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--fg-muted);
}

/* download card (shared with downloads/) */

.card {
  position: relative;
  width: 100%;
  background: transparent;
  border: 1px solid var(--border);
  border-top: 2px solid var(--cyan);
  border-radius: 6px;
  padding: var(--space-4);
  text-align: left;
}

.downloads {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.download-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.download-info {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

.download-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--fg);
}

.download-meta {
  font-size: 0.78rem;
  color: var(--fg-faint);
}

.checksum {
  margin: -0.4rem 0 0.2rem;
  font-size: 0.78rem;
}

.checksum summary {
  color: var(--fg-faint);
  cursor: pointer;
  list-style: none;
  width: fit-content;
}

.checksum summary::-webkit-details-marker {
  display: none;
}

.checksum summary:hover {
  color: var(--cyan);
}

.checksum-row {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: 0.5rem;
  padding: 0.5rem 0.7rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
}

.checksum-row code {
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--fg-muted);
}

.copy-btn {
  flex-shrink: 0;
  padding: 0.3rem 0.6rem;
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--fg-muted);
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.copy-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-shrink: 0;
  padding: 0.7rem 1.25rem;
  border: 1px solid transparent;
  border-radius: 4px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--cyan);
  color: #05161a;
}
.btn-primary:hover {
  background: #45d6d6;
}

.btn-secondary {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--fg-muted);
}
.btn-secondary:hover {
  border-color: var(--ok);
  color: var(--ok);
}

.notice {
  margin: 0 0 var(--space-3);
  padding: var(--space-2) var(--space-2) var(--space-2) var(--space-3);
  background: transparent;
  border: 1px solid var(--border);
  border-left: 2px solid var(--cyan);
  border-radius: 4px;
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--fg-muted);
}

.requirements {
  margin-top: 0;
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
  text-align: left;
}

.requirements-label {
  display: block;
  margin-bottom: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.requirements ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.requirements li {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.requirements li::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--cyan);
  flex-shrink: 0;
}

/* Homepage content sections, appended below this page's own content
   (ported 1:1 from site.css so it looks exactly like the homepage) */

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

.lead {
  margin: 0 0 var(--space-4);
  font-size: 1.08rem;
  line-height: 1.7;
  color: var(--fg-muted);
  max-width: 34rem;
}

.divider {
  position: relative;
  height: 2px;
  margin: var(--space-2) 0;
  background: linear-gradient(90deg, transparent 0%, var(--cyan) 50%, transparent 100%);
  opacity: 0.6;
}
.divider::after {
  content: "";
  position: absolute;
  inset: 0;
  background: inherit;
  filter: blur(6px);
}

.showcase {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: start;
  gap: var(--space-5);
  padding: var(--space-3) 0;
}

.showcase.reverse .showcase-media {
  order: 2;
}
.showcase.reverse .showcase-content {
  order: 1;
}

.showcase-content {
  max-width: 34rem;
}

.showcase-content .eyebrow {
  margin: 0 0 var(--space-3);
}

.showcase-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  line-height: 1.1;
  color: var(--fg);
}

.showcase-content .lead {
  margin: 0 0 var(--space-2);
  max-width: none;
}

.showcase-media img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  box-shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.6), 0 0 32px var(--cyan-soft);
}

.showcase-media.emblem img {
  max-width: 300px;
  margin: 0 auto;
  border: none;
  border-radius: 0;
  box-shadow: none;
  filter: drop-shadow(0 0 46px var(--cyan-soft));
  animation: float 7s ease-in-out infinite;
}

.cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) 0 var(--space-2);
  text-align: center;
}

.cta .lead {
  max-width: 30rem;
}

/* scroll-reveal: classes toggled by reveal.js; without JS everything stays visible */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.foot {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--fg-faint);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
  opacity: 0;
  animation: rise 0.8s ease 0.4s forwards;
}

.foot a {
  color: var(--fg-faint);
}

.sep {
  opacity: 0.5;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 8px 1px var(--cyan); }
  50% { box-shadow: 0 0 2px 0 transparent; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes emblem-glow {
  0%, 100% { filter: drop-shadow(0 0 12px var(--cyan-soft)) brightness(1); }
  50% { filter: drop-shadow(0 0 44px var(--cyan)) brightness(1.3); }
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }
  .hero-emblem {
    order: -1;
    max-width: 180px;
    margin: 0 auto;
  }
  .showcase {
    grid-template-columns: 1fr;
    gap: var(--space-3);
    padding: var(--space-3) 0;
  }
  .showcase-media {
    order: -1;
  }
  .showcase.reverse .showcase-media,
  .showcase.reverse .showcase-content {
    order: initial;
  }
  .showcase.reverse .showcase-media {
    order: -1;
  }
}

@media (max-width: 560px) {
  .page {
    padding: var(--space-3);
  }
  .card {
    padding: var(--space-3);
  }
  .frame {
    display: none;
  }
  .nav {
    gap: var(--space-2);
  }
  .download-row {
    flex-direction: column;
    align-items: stretch;
  }
  .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* cookie notice: fixed banner injected by legal-notice.js, dismissed once
   and remembered via localStorage (see that file for why it's a single
   honest notice rather than a multi-option consent flow) */

.legal-notice {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  padding: var(--space-2);
  transform: translateY(100%);
  opacity: 0;
  transition: transform 0.4s ease, opacity 0.4s ease;
  pointer-events: none;
}

.legal-notice.is-visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.legal-notice-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-2) var(--space-3);
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 2px solid var(--cyan);
  border-radius: 8px;
  box-shadow: 0 12px 40px -12px rgba(0, 0, 0, 0.6);
}

.legal-notice-text {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--fg-muted);
}

.legal-notice-text a {
  color: var(--cyan);
}

.legal-notice-accept {
  flex-shrink: 0;
}

@media (max-width: 560px) {
  .legal-notice-inner {
    flex-direction: column;
    align-items: stretch;
    text-align: left;
  }
  .legal-notice-accept {
    width: 100%;
  }
}