/* ═══════════════════════════════════════════════════
   ROOTNODE · Design System
   Font: Inter · Scale: 1.25 · Grid: 8px
   ═══════════════════════════════════════════════════ */

/* ── Design Tokens ── */
:root {
  /* Color palette */
  --color-bg:        #1c1b1d;
  --color-primary:   #2e343c;
  --color-secondary: #b5aca4;
  --color-accent:    #c376ff;
  --color-accent-glow: rgba(195, 118, 255, 0.22);

  /* Semantic text */
  --color-text-strong: #f0ebe7;
  --color-text-body:   #b5aca4;
  --color-text-muted:  rgba(181, 172, 164, 0.5);

  /* Surfaces */
  --color-surface:       rgba(46, 52, 60, 0.5);
  --color-surface-hover: rgba(46, 52, 60, 0.85);
  --color-border:        rgba(181, 172, 164, 0.1);
  --color-border-accent: rgba(195, 118, 255, 0.28);

  /* Spacing — 8px base unit */
  --sp-1:  0.5rem;
  --sp-2:  1rem;
  --sp-3:  1.5rem;
  --sp-4:  2rem;
  --sp-6:  3rem;
  --sp-8:  4rem;
  --sp-12: 6rem;
  --sp-16: 8rem;

  /* Typographic scale — ratio 1.25 */
  --text-xs:   0.64rem;
  --text-sm:   0.8rem;
  --text-base: 1rem;
  --text-md:   1.25rem;
  --text-lg:   1.563rem;
  --text-xl:   1.953rem;
  --text-2xl:  2.441rem;
  --text-3xl:  3.052rem;

  /* Misc */
  --radius-sm: 6px;
  --radius-md: 12px;
  --transition: 180ms ease;
  --max-w: 1120px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-body);
  background:
    repeating-linear-gradient(
      125deg,
      rgba(181, 172, 164, 0.025) 0px,
      rgba(181, 172, 164, 0.025) 1px,
      transparent 1px,
      transparent 9px
    ),
    linear-gradient(to bottom, #1c1b1d 0%, #1c1b1d 65%, #70418d 100%);
  background-attachment: fixed;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ── Container ── */
.container {
  width: min(var(--max-w), 100%);
  margin-inline: auto;
  padding-inline: var(--sp-4);
}

@media (max-width: 640px) {
  .container { padding-inline: var(--sp-2); }
}

/* ── Eyebrow ── */
.eyebrow {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
}

/* ── Section head ── */
.section-head { margin-bottom: var(--sp-8); }

.section-title {
  font-size: clamp(var(--text-xl), 4vw, var(--text-2xl));
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--color-text-strong);
  line-height: 1.15;
  margin-top: var(--sp-1);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-accent);
  color: #1a0e2a;
}
.btn--primary:hover {
  background: #d49dff;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--color-accent-glow);
}
.btn--primary:active  { transform: translateY(0); }
.btn--primary:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; }

.btn--outline {
  background: transparent;
  color: var(--color-text-body);
  border: 1px solid rgba(181, 172, 164, 0.22);
}
.btn--outline:hover {
  border-color: rgba(181, 172, 164, 0.5);
  color: var(--color-text-strong);
}
.btn--outline:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; }

.btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
  padding: 0.5rem 1rem;
}
.btn--ghost:hover {
  color: var(--color-text-body);
  background: rgba(181, 172, 164, 0.07);
}

/* ── Navigation ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(28, 27, 29, 0.75);
}

.nav__inner {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  height: 4rem;
  width: min(var(--max-w), 100%);
  margin-inline: auto;
  padding-inline: var(--sp-4);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  text-decoration: none;
  flex-shrink: 0;
}

/* ── Morph Logo (JS-driven) ── */
@keyframes logoFloat {
  0%, 100% { transform: translateY(0);     }
  50%       { transform: translateY(-12px); }
}

.logo-morph {
  position: fixed;
  display: grid;
  place-items: center;
  font-family: 'Inter', -apple-system, sans-serif;
  font-weight: 700;
  letter-spacing: 0.05em;
  background: var(--color-accent);
  color: #1a0e2a;
  border-radius: 6px;
  pointer-events: none;
  user-select: none;
  z-index: 200;
  animation: logoFloat 3.6s ease-in-out infinite;
}

.nav__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: #1a0e2a;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  opacity: 0; /* controlled by morph JS */
}

.nav__logo-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-strong);
  letter-spacing: 0.01em;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-left: auto;
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  position: relative;
  padding-bottom: 2px;
  transition: color 220ms ease;
}
.nav__link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1.5px;
  background: linear-gradient(90deg, var(--color-accent), #e89eff);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 220ms cubic-bezier(0.4, 0, 0.2, 1);
}
.nav__link:hover {
  color: var(--color-text-strong);
}
.nav__link:hover::after {
  transform: scaleX(1);
}
.nav__link:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; border-radius: 2px; }

.nav__login { margin-left: var(--sp-2); }

.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--sp-1);
  margin-left: auto;
}
.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-muted);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav__mobile {
  display: none;
  border-top: 1px solid var(--color-border);
  padding: var(--sp-2) var(--sp-4);
  flex-direction: column;
  gap: 0;
}

.nav__mobile.is-open {
  display: flex;
}

.nav__mobile-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--sp-2) 0;
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition);
}
.nav__mobile-link:last-child { border-bottom: none; }
.nav__mobile-link:hover { color: var(--color-text-body); }

@media (max-width: 640px) {
  .nav__links,
  .nav__login { display: none; }
  .nav__toggle { display: flex; }
}

/* ── Hero ── */
.hero {
  /* Large top padding to keep text below the floating logo */
  padding: clamp(280px, 54vh, 520px) 0 var(--sp-16);
}

.hero__wrap {
  width: min(var(--max-w), 100%);
  margin-inline: auto;
  padding-inline: var(--sp-4);
  max-width: 680px;
}

.hero__wrap .eyebrow {
  display: block;
  margin-bottom: var(--sp-2);
}

.hero__title {
  font-size: clamp(var(--text-2xl), 7vw, var(--text-3xl));
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--color-text-strong);
  margin-bottom: var(--sp-3);
}

.hero__sub {
  font-size: var(--text-md);
  color: rgba(181, 172, 164, 0.75);
  line-height: 1.65;
  max-width: 54ch;
  margin-bottom: var(--sp-6);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

@media (max-width: 640px) {
  .hero { padding: clamp(180px, 42vw, 240px) 0 var(--sp-6); }
  .hero__wrap { max-width: 100%; padding-inline: var(--sp-2); }
  .hero__actions { flex-direction: column; align-items: flex-start; }
}

/* ── Apps Section ── */
.apps-sec {
  padding: var(--sp-4) 0 var(--sp-12);
  scroll-margin-top: 4rem;
}

.apps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-2);
}

.app-card {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  padding: var(--sp-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  transition: background var(--transition), border-color var(--transition),
              transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.app-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left, rgba(195, 118, 255, 0.1), transparent 55%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.app-card:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-accent);
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
}
.app-card:hover::after { opacity: 1; }

.app-card:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-md);
}

.app-card__icon {
  width: 36px;
  height: 36px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.app-card__code {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.app-card__title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-strong);
  line-height: 1.3;
}

.app-card__desc {
  font-size: var(--text-sm);
  color: rgba(181, 172, 164, 0.7);
  line-height: 1.55;
  flex: 1;
}

.app-card__cta {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  align-self: flex-start;
  transition: color var(--transition), letter-spacing var(--transition);
}
.app-card:hover .app-card__cta {
  color: var(--color-accent);
  letter-spacing: 0.04em;
}

/* ── WIP badge ── */
.app-card--wip {
  opacity: 0.68;
  filter: saturate(0.8);
  transition: background var(--transition), border-color var(--transition),
              transform var(--transition), box-shadow var(--transition),
              opacity var(--transition), filter var(--transition);
}
.app-card--wip:hover {
  opacity: 1;
  filter: saturate(1);
}

.app-card__wip {
  position: absolute;
  top: var(--sp-2);
  right: var(--sp-2);
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #e9ce37;
  background: rgba(196, 144, 96, 0.1);
  border: 1px solid rgba(196, 144, 96, 0.22);
  border-radius: 4px;
  padding: 0.22em 0.6em;
  line-height: 1.5;
  pointer-events: none;
  user-select: none;
}
.app-card__wip::before {
  content: '▲';
  font-size: 0.6em;
  line-height: 1;
  opacity: 0.85;
}

.app-card__icon-row {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.app-card__yield {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  filter: drop-shadow(0 1px 4px rgba(240, 192, 48, 0.25));
  transition: filter var(--transition);
}
.app-card--wip:hover .app-card__yield {
  filter: drop-shadow(0 2px 8px rgba(240, 192, 48, 0.5));
}

@media (max-width: 900px) {
  .apps-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .apps-grid { grid-template-columns: 1fr; }
  .apps-sec  { padding-bottom: var(--sp-8); }
}

/* ── About Section ── */
.about-sec {
  padding: var(--sp-16) 0;
  border-top: 1px solid var(--color-border);
  scroll-margin-top: 4rem;
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: var(--sp-12);
}

.about-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--sp-3);
}

.about-body {
  font-size: var(--text-md);
  color: rgba(181, 172, 164, 0.72);
  line-height: 1.7;
  max-width: 52ch;
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
  flex-shrink: 0;
}

.stat { text-align: right; }

.stat__num {
  display: block;
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-text-strong);
  line-height: 1;
}

.stat__label {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 4px;
}

@media (max-width: 760px) {
  .about-inner {
    grid-template-columns: 1fr;
    gap: var(--sp-8);
  }
  .about-stats {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--sp-6);
  }
  .stat { text-align: left; }
  .about-sec { padding: var(--sp-12) 0; }
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--sp-6) 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  flex-wrap: wrap;
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.footer__links { display: flex; gap: var(--sp-3); }

.footer__link {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition);
}
.footer__link:hover { color: var(--color-text-body); }
.footer__link:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }