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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  width: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading);
  width: 100%;
  min-height: 100dvh;
  overflow-x: hidden;
  cursor: auto;
}

body.nav-open {
  overflow: hidden;
}

img,
svg,
video {
  max-width: 100%;
  height: auto;
  display: block;
}

p,
li,
a,
span {
  overflow-wrap: break-word;
}

/* Subtle grain */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.025;
  pointer-events: none;
  z-index: 0;
}

/* ── Skip link ── */
.skip-link {
  position: absolute;
  top: 0.5rem;
  left: var(--space-page-x);
  z-index: 10000;
  padding: 0.65rem 1rem;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  color: #000;
  background: var(--accent);
  border-radius: var(--radius-sm);
  transform: translateY(-200%);
  transition: transform var(--duration-fast) var(--ease-out);
}

.skip-link:focus {
  transform: translateY(0);
  outline: 2px solid var(--white);
  outline-offset: 2px;
}

/* ── Focus visible ── */
:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
}

/* ── Custom cursor (fine pointer + large screens only) ── */
.cursor,
.cursor-ring {
  display: none;
}

/* ── Navigation (mobile-first) ── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  min-height: var(--nav-height);
  padding: 0.5rem var(--space-page-x);
  padding-top: max(0.5rem, env(safe-area-inset-top, 0px));
  border-bottom: 1px solid transparent;
  transition:
    border-color var(--duration-normal),
    background var(--duration-normal);
}

nav.scrolled,
nav.nav-solid {
  background: color-mix(in srgb, var(--bg) 94%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-color: var(--border);
}

@keyframes grow-progress {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

nav::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform-origin: left;
  transform: scaleX(0);
  z-index: 101;
}

@supports (animation-timeline: scroll()) {
  nav::after {
    animation: grow-progress auto linear;
    animation-timeline: scroll();
  }
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.04em;
  text-decoration: none;
  min-height: var(--touch-min);
  display: inline-flex;
  align-items: center;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  order: 2;
}

.nav-menu-btn {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: var(--touch-min);
  height: var(--touch-min);
  padding: 0;
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-shrink: 0;
}

.nav-menu-bar {
  display: block;
  width: 1.1rem;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition:
    transform var(--duration-fast) ease,
    opacity var(--duration-fast) ease;
}

nav.nav-open .nav-menu-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

nav.nav-open .nav-menu-bar:nth-child(2) {
  opacity: 0;
}

nav.nav-open .nav-menu-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu panel — full width below nav with premium glassmorphism */
.nav-panel {
  order: 3;
  flex: 1 1 100%;
  width: 100%;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition:
    max-height var(--duration-normal) var(--ease-out),
    opacity var(--duration-fast),
    visibility var(--duration-fast),
    border-color var(--duration-normal);
}

nav.nav-open .nav-panel {
  max-height: min(70vh, 26rem);
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  border-bottom-color: var(--border);
  padding-bottom: 1rem;
}

.nav-panel .nav-links {
  display: flex;
  flex-direction: column;
  gap: 0;
  width: 100%;
  list-style: none;
}

.nav-panel .nav-links li {
  transform: translateY(10px);
  opacity: 0;
  transition:
    transform var(--duration-normal) var(--ease-out),
    opacity var(--duration-normal);
}

nav.nav-open .nav-panel .nav-links li {
  transform: translateY(0);
  opacity: 1;
}

/* Elegant staggered stagger animations for mobile menu links */
nav.nav-open .nav-panel .nav-links li:nth-child(1) {
  transition-delay: 40ms;
}
nav.nav-open .nav-panel .nav-links li:nth-child(2) {
  transition-delay: 80ms;
}
nav.nav-open .nav-panel .nav-links li:nth-child(3) {
  transition-delay: 120ms;
}
nav.nav-open .nav-panel .nav-links li:nth-child(4) {
  transition-delay: 160ms;
}
nav.nav-open .nav-panel .nav-links li:nth-child(5) {
  transition-delay: 200ms;
}
nav.nav-open .nav-panel .nav-links li:nth-child(6) {
  transition-delay: 240ms;
}

.nav-panel .nav-links a {
  display: flex;
  align-items: center;
  min-height: var(--touch-min);
  padding: 0.5rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--muted);
  text-decoration: none;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  transition:
    color var(--duration-fast),
    padding-left var(--duration-fast);
}

html[data-theme="light"] .nav-panel .nav-links a {
  color: var(--copy);
  border-bottom-color: rgba(0, 0, 0, 0.08);
}

.nav-panel .nav-links li:last-child a {
  border-bottom: none;
}

.nav-links a.active {
  color: var(--accent);
}

@media (hover: hover) {
  .nav-links a:hover {
    color: var(--accent);
  }
  .nav-panel .nav-links a:hover {
    padding-left: 0.85rem;
  }
}

.theme-toggle {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: 999px;
  min-height: var(--touch-min);
  padding: 0 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  transition:
    color var(--duration-fast),
    border-color var(--duration-fast);
}

@media (hover: hover) {
  .theme-toggle:hover {
    color: var(--accent);
    border-color: var(--accent);
  }
}

.theme-toggle .theme-icon {
  font-size: 0.75rem;
  line-height: 1;
}

/* ── Buttons ── */
.btn-primary,
.btn-secondary {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  min-height: var(--touch-min);
  padding: 0.75rem 1.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition:
    opacity var(--duration-fast),
    color var(--duration-fast),
    border-color var(--duration-fast),
    transform var(--duration-fast);
  cursor: pointer;
}

.btn-primary {
  color: #000;
  background: var(--accent);
  border: none;
}

.btn-secondary {
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--border2);
}

@media (hover: hover) {
  .btn-primary:hover {
    opacity: 0.9;
  }
  .btn-secondary:hover {
    color: var(--accent);
    border-color: var(--accent);
  }
  @media (prefers-reduced-motion: no-preference) {
    .btn-primary:hover,
    .btn-secondary:hover {
      transform: translateY(-1px);
    }
  }
}

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem var(--space-page-x);
  padding-bottom: max(1.5rem, env(safe-area-inset-bottom, 0px) + 1rem);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
}

.footer-copy,
.footer-tagline {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--muted2);
  letter-spacing: 0.04em;
}

.footer-tagline span {
  color: var(--accent);
}

/* ── Layout shells ── */
main {
  position: relative;
  z-index: 1;
}

.page-header,
.blog-wrap,
.article-hero,
.article-body,
section,
.section-divider {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  box-sizing: border-box;
}

/* Anchor scroll offset for fixed nav */
[id] {
  scroll-margin-top: calc(var(--nav-height) + 1rem);
}

/* ── Reveal animations ── */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.6);
    opacity: 0;
  }
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity var(--duration-normal) var(--ease-out),
    transform var(--duration-normal) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero-eyebrow,
  .hero-name,
  .hero-title,
  .hero-desc,
  .hero-ctas,
  .page-header-label,
  .page-header h1,
  .page-header-sub,
  .filter-bar,
  .breadcrumb,
  .article-category,
  .article-hero h1,
  .article-subtitle,
  .article-meta-bar {
    opacity: 1;
    animation: none;
  }
}

/* ── Tablet (640px+) ── */
@media (min-width: 40rem) {
  .nav-logo {
    font-size: 0.75rem;
  }

  .theme-toggle {
    font-size: 0.62rem;
  }

  .btn-primary,
  .btn-secondary {
    font-size: 0.75rem;
    padding: 0.75rem 1.5rem;
  }

  footer {
    padding: 2rem var(--space-page-x);
    gap: 0.75rem;
  }

  .footer-copy,
  .footer-tagline {
    font-size: 0.7rem;
    letter-spacing: 0.06em;
  }
}

/* ── Desktop (900px+) ── */
@media (min-width: 56.25rem) {
  nav {
    display: grid;
    grid-template-columns: 1fr auto auto;
    align-items: center;
    flex-wrap: nowrap;
    padding: 0.75rem var(--space-page-x);
    gap: 2rem;
  }

  .nav-logo {
    justify-self: start;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
  }

  .nav-controls {
    order: unset;
    grid-column: 3;
    justify-self: end;
    gap: 1rem;
  }

  .nav-menu-btn {
    display: none;
  }

  .nav-panel {
    order: unset;
    flex: unset;
    width: auto;
    max-height: none;
    overflow: visible;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    grid-column: 2;
    grid-row: 1;
    justify-self: center;
    align-self: center;
    background: none;
    border: none;
    padding: 0;
  }

  .nav-panel .nav-links {
    flex-direction: row;
    gap: 2rem;
    width: auto;
    justify-content: flex-end;
  }

  .nav-panel .nav-links li {
    transform: none;
    opacity: 1;
  }

  .nav-panel .nav-links a {
    min-height: auto;
    padding: 0;
    font-size: 0.72rem;
    border-bottom: none;
  }

  .theme-toggle {
    font-size: 0.68rem;
    padding: 0.4rem 0.7rem;
    gap: 0.45rem;
  }

  .theme-toggle .theme-icon {
    font-size: 0.85rem;
  }

  .btn-primary,
  .btn-secondary {
    font-size: 0.78rem;
    padding: 0.85rem 1.75rem;
  }

  footer {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    text-align: left;
  }

  .reveal {
    transition-duration: 400ms;
  }
}

/* Custom cursor — desktop + fine pointer only */
@media (min-width: 56.25rem) and (pointer: fine) {
  body {
    cursor: none;
  }

  .cursor {
    display: block;
    width: 10px;
    height: 10px;
    background: var(--accent);
    border-radius: 50%;
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition:
      width var(--duration-fast),
      height var(--duration-fast);
  }

  .cursor-ring {
    display: block;
    width: 32px;
    height: 32px;
    border: 1px solid rgba(249, 115, 22, 0.4);
    border-radius: 50%;
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 9998;
    transform: translate(-50%, -50%);
    transition: all 0.15s ease;
  }

  .filter-btn {
    cursor: none;
  }
}