@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;500;600;700;800&display=swap');

/* ===========================
   CSS RESET & BASE
   =========================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* System font stack */
  --font: ui-rounded, 'SF Pro Rounded', 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;

  /* Base colors */
  --bg: #f9f8f6;
  --bg-secondary: #f3f1ee;
  --text: #111;
  --text-muted: #777;
  --border: #e0ddd8;
  --link: #111;
  --link-hover: #555;
  --accent: #111;

  /* Post-it colors */
  --postit-yellow: #fef08a;
  --postit-green:  #bbf7d0;
  --postit-pink:   #fecaca;
  --postit-blue:   #bae6fd;

  /* Spacing */
  --max-width: 700px;
  --page-pad: clamp(1.25rem, 5vw, 3rem);
  --section-gap: 3rem;
}


html {
  font-size: 15px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

main { flex: 1; }

a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.15s ease;
}
a:hover { color: var(--link-hover); }

/* ===========================
   ACCESSIBILITY
   =========================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

:focus:not(:focus-visible) {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 3px;
  border-radius: 4px;
}

.nav-links--light :focus-visible {
  outline: 2px solid #fff;
}

.galaxy-back-btn:focus-visible {
  outline: 2px solid #fff;
}

img { max-width: 100%; display: block; }

/* ===========================
   INTRO SCREEN
   =========================== */
#intro-screen {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.8s;
}

.intro-title {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  opacity: 0;
  animation: introReveal 2.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes introReveal {
  0% { opacity: 0; transform: translateY(20px) scale(0.98); filter: blur(4px); }
  25% { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); }
  75% { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); }
  100% { opacity: 0; transform: translateY(-20px) scale(1.02); filter: blur(4px); }
}

body.loaded #intro-screen {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* ===========================
   LAYOUT WRAPPERS
   =========================== */

/* Shared outer padding — same on EVERY page */
.page-wrap {
  padding-left: var(--page-pad);
  padding-right: var(--page-pad);
  width: 100%;
}

/* Narrow column (home, project detail) */
.content-narrow {
  max-width: var(--max-width);
  margin: 0 auto;
}

/* Wide column (projects grid) */
.content-wide {
  max-width: 1280px;
  margin: 0 auto;
}

/* ===========================
   HEADER / NAV
   =========================== */
header {
  padding-top: 2rem;
  padding-bottom: 2rem;
}

header .content-narrow,
header .content-wide {
  display: contents; /* nav fills directly */
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--max-width);
  margin: 0 auto;
}


.nav-name {
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--text);
  letter-spacing: -0.01em;
}
.nav-name:hover { color: var(--text-muted); }

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}
.nav-links a {
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: color 0.15s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--text); }

.contact-btn {
  background-image: linear-gradient(110deg, #999 30%, #000 50%, #999 70%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent !important;
  animation: gradientShift 2s linear infinite;
  text-decoration: none;
  font-weight: 500;
}

.nav-links--light .contact-btn {
  background-image: linear-gradient(110deg, #999 30%, #fff 50%, #999 70%);
}

@keyframes gradientShift {
  0% { background-position: 200% center; }
  100% { background-position: -200% center; }
}

/* ===========================
   FOOTER
   =========================== */
footer {
  padding-top: 2.5rem;
  padding-bottom: 2.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}


.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}
.footer-links a {
  text-decoration: none;
  color: var(--text-muted);
}
.footer-links a:hover { color: var(--text); }

/* Weather badge */

/* ===========================
   SCROLL REVEAL ANIMATIONS
   =========================== */

/* Base: elements start invisible */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Slide from right (project preview cards on home) */
.reveal-right {
  opacity: 0;
  transform: translateX(28px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger delays */
.reveal-delay-1  { transition-delay: 0.08s; }
.reveal-delay-2  { transition-delay: 0.16s; }
.reveal-delay-3  { transition-delay: 0.24s; }

/* ===========================
   HOME PAGE
   =========================== */
.home-content {
  padding-top: 0.5rem;
  padding-bottom: var(--section-gap);
}

.home-bio {
  font-size: 1rem;
  line-height: 1.8;
  text-align: justify;
  hyphens: auto;
  margin-bottom: var(--section-gap);
  color: var(--text);
}

.home-section {
  margin-bottom: var(--section-gap);
}

.home-section h2 {
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.now-list {
  list-style: disc;
  padding-left: 1.25rem;
  font-size: 0.95rem;
  line-height: 1.9;
}
.now-list a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Latest projects on home — slide from right */
.home-latest-projects {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 1.25rem;
}

.home-project-card {
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  transition: opacity 0.2s, transform 0.25s ease;
}
.home-project-card:hover {
  opacity: 0.75;
  transform: translateY(-2px);
}

.home-project-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: var(--border);
  border-radius: 2px;
}

.home-project-card .card-name {
  font-size: 0.85rem;
  font-weight: 500;
}
.home-project-card .card-year {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.home-all-link {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.contact-section p {
  font-size: 0.95rem;
  line-height: 1.75;
}

/* ===========================
   PROJECTS PAGE — POST-IT BOARD
   =========================== */
.projects-page-header {
  padding: 0.75rem 0 2.5rem;
  /* Same centering as home content */
  max-width: var(--max-width);
  margin: 0 auto;
}

.projects-page-header h1 {
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.2rem;
}

.projects-count {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Post-it grid — same left/right margin as home */
.postit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 2.5rem 1.75rem;
  padding-bottom: 5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

/* ===========================
   POST-IT CARD — Realistic
   =========================== */
.postit {
  position: relative;
  display: block;
  text-decoration: none;
  color: var(--text);
  /* Rotation set via --r custom prop inline */
  transform: rotate(var(--r, 0deg));
  transform-origin: 50% 8%;   /* near top = where glue would be */
  transition:
    transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  will-change: transform;
  cursor: pointer;
}

/*
   SHADOW — simple elliptical blob below the card.
   Sits only at the BOTTOM (where paper lifts from the wall).
   Top stays shadow-free (adhesive strip is flat against surface).
   No mask tricks — just a positioned ellipse, reliable across all browsers.
*/
.postit-shadow {
  position: absolute;
  /* Slightly below the bottom edge of the card */
  bottom: -7px;
  /* Narrower than the card so it reads as "floating" not "stuck" */
  left: 6%;
  right: 6%;
  height: 20px;
  background: rgba(0,0,0,0.22);
  border-radius: 50%;
  filter: blur(10px);
  z-index: -1;
  pointer-events: none;
  transition: bottom 0.3s ease, opacity 0.3s ease, filter 0.3s ease, left 0.3s ease, right 0.3s ease;
}

/* Hover: card lifts, shadow moves further down and softens */
.postit:hover {
  transform: rotate(0deg) scale(1.05) translateY(-8px) !important;
  z-index: 20;
}
.postit:hover .postit-shadow {
  bottom: -14px;
  left: 10%;
  right: 10%;
  opacity: 0.75;
  filter: blur(16px);
}

/* Color variants */
.postit--yellow .postit-paper { background: var(--postit-yellow); }
.postit--green  .postit-paper { background: var(--postit-green); }
.postit--pink   .postit-paper { background: var(--postit-pink); }
.postit--blue   .postit-paper { background: var(--postit-blue); }

/* Paper surface */
.postit-paper {
  position: relative;
  border-radius: 2px;
  overflow: hidden;
}


/*
   Very subtle gradient overlay:
   slightly darker at top (paper pressed flat against wall),
   slightly lighter at bottom (bowing towards viewer).
   Two-stop only — avoids any visible transparency-edge artifacts.
*/
.postit-paper::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,0.06) 0%,
    rgba(255,255,255,0.12) 100%
  );
  pointer-events: none;
  z-index: 1;
  border-radius: inherit;
}

/* Content area */
.postit-body {
  padding: 0.7rem 0.8rem 1rem;
}

/* Post-it image */
.postit-image {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: 1px;
  margin-bottom: 0.65rem;
  background: rgba(0,0,0,0.06);
  display: block;
}

.postit-name {
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.3rem;
  letter-spacing: -0.01em;
}

.postit-meta {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 0.4rem;
}

.postit-year {
  font-size: 0.72rem;
  opacity: 0.55;
  flex-shrink: 0;
}

.postit-tags {
  display: flex;
  gap: 0.25rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.postit-tag {
  font-size: 0.62rem;
  opacity: 0.5;
  background: rgba(0,0,0,0.08);
  padding: 0.08rem 0.35rem;
  border-radius: 100px;
}

.postit-external-icon {
  position: absolute;
  top: 1.4rem;
  right: 0.6rem;
  font-size: 0.65rem;
  opacity: 0.35;
}

/* ===========================
   CURL EFFECT (--curled variant)

   The curl is rendered by .postit-curl which sits OUTSIDE .postit-paper
   (not subject to overflow:hidden). It creates a right-triangle in the
   bottom-right corner that shows the page background, making it look like
   the corner is physically peeled away from the wall.

   The ::after on .postit-paper draws the shadow cast by the lifted flap
   onto the paper surface below it.
   =========================== */

/* Flat bottom-right corner for curled variant (no border-radius there) */
.postit--curled .postit-paper {
  border-radius: 2px 2px 0 2px;
}

/*
   Shadow on paper from the lifted flap.
   Goes from dark (at corner) to transparent (spreading into paper).
   Uses ::after on the paper so it's clipped by overflow:hidden (correct).
*/
.postit--curled .postit-paper::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 50px;
  height: 50px;
  /*
    135deg goes top-left → bottom-right.
    Bottom-right triangle = dark (shadow under curl).
    Top-left triangle = transparent.
  */
  background: linear-gradient(
    135deg,
    transparent  50%,
    rgba(0,0,0,0.16) 50%,
    rgba(0,0,0,0.04) 75%,
    transparent  90%
  );
  pointer-events: none;
  z-index: 2;
}

/*
   The "lifted flap" curl triangle.
   Sits OUTSIDE .postit-paper (no overflow clipping).
   Shows page background in bottom-right triangle.

   drop-shadow casts a shadow from the flap onto the paper:
   direction: upper-left (−x, −y) = shadow falls toward top-left of curl.
*/
.postit-curl {
  display: none;
  position: absolute;
  bottom: 0;
  right: 0;
  width: 50px;
  height: 50px;
  z-index: 5;
  pointer-events: none;
}
.postit--curled .postit-curl { display: block; }

.postit-curl::before {
  content: '';
  position: absolute;
  inset: 0;
  /*
    135deg: top-left half = transparent (paper shows through),
            bottom-right half = page background (the "revealed" curl).
  */
  background: linear-gradient(
    135deg,
    transparent 50%,
    var(--bg)   50%
  );
  filter: drop-shadow(-2px -2px 5px rgba(0,0,0,0.28));
}

/* Post-it scroll reveal */
.postit {
  opacity: 0;
  transform: rotate(var(--r, 0deg)) translateY(12px) scale(0.97);
  transition:
    opacity 0.45s ease,
    transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.postit.visible {
  opacity: 1;
  transform: rotate(var(--r, 0deg)) translateY(0) scale(1);
}
.postit:hover {
  opacity: 1;
  transform: rotate(0deg) scale(1.05) translateY(-8px) !important;
}

/* ===========================
   EXPLORATIONS (esplorazioni.html)
   =========================== */
.explorations-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
  padding-bottom: 4rem;
}

.exploration-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  overflow: hidden;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), background 0.3s;
  display: flex;
  flex-direction: column;
}

.exploration-card:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.06);
}

.exploration-img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  background: #111;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.exploration-content {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.exploration-title {
  font-size: 1.1rem;
  font-weight: 500;
  margin: 0;
}

.exploration-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin: 0;
}

.exploration-date {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
  margin-top: 0.5rem;
}


/* ===========================
   PROJECT DETAIL PAGE
   =========================== */
.project-detail {
  padding-bottom: 4rem;
}

.project-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  margin-bottom: 2.5rem;
  transition: color 0.15s;
}
.project-back:hover { color: var(--text); }
.project-back::before { content: '←'; }

@media (max-width: 768px) {
  .project-back {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.7);
    color: var(--text);
    border: 1px solid rgba(0, 0, 0, 0.08);
    padding: 0.6rem 1.4rem;
    border-radius: 100px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 999;
    margin-bottom: 0;
    font-size: 0.9rem;
    white-space: nowrap;
    box-shadow: 0 4px 16px rgba(0,0,0,0.3);
  }
}

.project-detail-hero {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  display: block;
}

.project-title {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.project-header-meta {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.project-year-badge {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.project-tag-list {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  list-style: none;
}
.project-tag-list li {
  font-size: 0.75rem;
  background: var(--border);
  border-radius: 100px;
  padding: 0.2rem 0.65rem;
  color: var(--text-muted);
}

.project-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  padding: 0.4rem 0.9rem;
  background: var(--text);
  color: #fff;
  border-radius: 100px;
  text-decoration: none;
  margin-left: auto;
  transition: background 0.15s;
}
.project-link-btn:hover { background: #333; color: #fff; }

.project-content {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.content-text {
  font-size: 0.975rem;
  line-height: 1.8;
  text-align: justify;
  hyphens: auto;
}

.content-image {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.content-image img {
  width: 100%;
  background: var(--border);
  border-radius: 3px;
  max-height: 480px;
  object-fit: cover;
}
.content-image figcaption {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 768px) {
  :root {
    --page-pad: 1.25rem;
    --section-gap: 2.25rem;
  }
  .home-latest-projects {
    grid-template-columns: repeat(2, 1fr);
  }
  .postit-grid {
    grid-template-columns: repeat(auto-fill, minmax(155px, 1fr));
    gap: 2rem 1.25rem;
  }
}

@media (max-width: 480px) {
  :root { --page-pad: 1rem; }

  .home-latest-projects {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
  .postit-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.75rem 1rem;
  }
  .project-title { font-size: 1.25rem; }
  .project-header-meta {
    flex-direction: column;
    align-items: flex-start;
  }
  .project-link-btn { margin-left: 0; }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ===========================
   UTILITY
   =========================== */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ===========================
   SPACE THEME (Projects Page)
   =========================== */
.space-page {
  background: #050505;
  color: #fff;
  min-height: 100vh;
  overflow-x: hidden;
}

.space-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  background: radial-gradient(circle at center, #111 0%, #000 100%);
  pointer-events: none;
}

.space-bg::after {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 200vw; height: 200vh;
  background-image: 
    radial-gradient(1.5px 1.5px at 20px 30px, #fff, rgba(0,0,0,0)),
    radial-gradient(1.5px 1.5px at 40px 70px, #fff, rgba(0,0,0,0)),
    radial-gradient(2px 2px at 90px 40px, #fff, rgba(0,0,0,0)),
    radial-gradient(2.5px 2.5px at 160px 120px, rgba(255,255,255,0.8), rgba(0,0,0,0));
  background-repeat: repeat;
  background-size: 200px 200px;
  animation: starsMove 150s linear infinite;
  opacity: 0.6;
}

@keyframes starsMove {
  from { transform: translate(0, 0); }
  to { transform: translate(-200px, -200px); }
}

.space-bg.travel-mode::after {
  animation: starsTravel 8s linear infinite;
}

@keyframes starsTravel {
  from { transform: translate(-200px, 0); }
  to { transform: translate(0, 0); }
}

/* Specific nav/footer colors on space page */
.space-header .nav-name,
.space-header .nav-links a {
  color: #ccc;
}
.space-header .nav-name:hover,
.space-header .nav-links a:hover,
.space-header .nav-links a.active {
  color: #fff;
}
.space-footer, .space-footer a {
  color: #888;
  border-color: rgba(255,255,255,0.1);
}
.space-footer a:hover {
  color: #ccc;
}

.space-main {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  height: calc(100svh - 160px);
  min-height: calc(100svh - 160px);
  padding: 2rem 0;
  overflow: hidden;
}

/* Back button */
.galaxy-back-btn {
  position: absolute;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: rgba(255,255,255,0.1);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.2);
  padding: 0.6rem 1.4rem;
  border-radius: 100px;
  font-family: inherit;
  font-size: 0.95rem;
  cursor: pointer;
  backdrop-filter: blur(5px);
  transition: all 0.2s;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
}

.galaxy-back-btn.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.galaxy-back-btn:hover {
  background: rgba(255,255,255,0.2);
  transform: translateX(-50%) scale(1.05);
}

.space-header {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding-top: 2rem;
}

.space-header.initially-hidden nav,
.space-header.initially-hidden .hero-bio-wrap {
  opacity: 0;
  pointer-events: none;
  transform: translateY(-20px);
}
.space-header.reveal-header nav,
.space-header.reveal-header .hero-bio-wrap {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.space-header.reveal-header nav {
  transition: opacity 1.2s ease, transform 1.2s ease;
}
.space-header.reveal-header .hero-bio-wrap {
  transition: opacity 1.2s ease 0.6s, transform 1.2s ease 0.6s;
}

.hero-bio-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero-bio {
  max-width: 500px;
  color: #ffffff;
  font-size: 0.95rem;
  line-height: 1.5;
  margin-top: 2rem;
  opacity: 0;
  animation: heroBioReveal 1s ease 2.2s forwards;
}

@keyframes heroBioReveal {
  0% { opacity: 0; transform: translateY(10px); }
  100% { opacity: 1; transform: translateY(0); }
}

.solar-system {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transition: opacity 0.5s ease;
}

/* Transition states */
.solar-system.fade-out {
  opacity: 0;
  pointer-events: none;
}

/* Solar Instructions */
.solar-instructions {
  position: absolute;
  bottom: 12%;
  left: 50%;
  transform: translateX(-50%);
  color: #fff;
  z-index: 1000;
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 1s ease;
}
.solar-instructions p {
  font-size: 1.25rem;
  max-width: 400px;
  line-height: 1.5;
  margin: 0;
  text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}
.solar-instructions.visible {
  opacity: 1;
}

/* WebGL 3D Container */
#webgl-canvas {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  outline: none;
}

/* HTML Overlay for labels */
#labels-container {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
}

.webgl-label {
  position: absolute;
  top: 0; left: 0;
  transform: translate(-50%, -50%);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  text-shadow: 0 2px 4px rgba(0,0,0,0.8);
  pointer-events: auto;
  cursor: pointer;
  background: rgba(0,0,0,0.4);
  padding: 0.3rem 0.6rem;
  border-radius: 20px;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.15);
  transition: transform 0.2s, background 0.2s;
  white-space: nowrap;
  display: none; /* hidden by default until positioned */
}

.webgl-label.visible {
  display: block;
}

.webgl-label:hover {
  transform: translate(-50%, -50%) scale(1.1);
  background: rgba(0,0,0,0.7);
}

.webgl-label--moon {
  font-size: 0.75rem;
  background: rgba(0,0,0,0.6);
  padding: 0.2rem 0.5rem;
}



/* Moon Popup */
.moon-popup {
  position: absolute;
  background: #F2F1EF;
  border-radius: 20px;
  padding: 9px;
  width: 280px;
  pointer-events: none; 
  transform: translate(-50%, -100%) translateY(10px); 
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 100;
  box-shadow: 0 12px 36px rgba(0,0,0,0.12);
  color: #111;
  left: -9999px; /* hidden out of screen */
}

.moon-popup.visible {
  opacity: 1;
  transform: translate(-50%, -100%) translateY(-20px);
}

.moon-popup img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 12px;
  background: #fff;
}

.moon-popup-content {
  padding: 0 4px 6px 4px;
}

.moon-popup-content h3 {
  font-size: 1.25rem;
  font-weight: 500;
  margin: 0 0 4px 0;
  color: #111;
  letter-spacing: -0.01em;
}

.moon-popup-content p {
  font-size: 0.95rem;
  color: #616161;
  margin: 0;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.moon-popup-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 4px;
}

.moon-popup-year {
  font-size: 0.78rem;
  font-weight: 500;
  color: #999;
  white-space: nowrap;
  flex-shrink: 0;
}

/* Mobile Category Title */
.mobile-category-title {
  position: absolute;
  top: 6rem;
  left: 50%;
  transform: translateX(-50%);
  color: #fff;
  font-size: 1.8rem;
  font-weight: 500;
  z-index: 99;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.mobile-category-title.visible {
  opacity: 1;
}

/* Mobile Bottom Sheet */
.mobile-moon-popup {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: #F2F1EF;
  border-radius: 24px 24px 0 0;
  padding: 1.5rem;
  z-index: 1000;
  transform: translateY(100%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 -10px 40px rgba(0,0,0,0.3);
  color: #111;
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
}
.mobile-moon-popup.visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.mobile-close-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: rgba(0,0,0,0.1);
  color: #000;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mobile-moon-popup-content {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
}
#mobile-moon-img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: 12px;
  background: #fff;
  margin-bottom: 1rem;
}
#mobile-moon-title {
  font-size: 1.5rem;
  font-weight: 500;
  margin: 0;
}

.mobile-moon-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.mobile-moon-year {
  font-size: 0.85rem;
  font-weight: 500;
  color: rgba(255,255,255,0.4);
  white-space: nowrap;
  flex-shrink: 0;
}
#mobile-moon-desc {
  font-size: 0.95rem;
  color: #616161;
  margin: 0 0 1.5rem 0;
  line-height: 1.5;
}
.mobile-explore-btn {
  background: #111;
  color: #fff;
  text-align: center;
  padding: 1rem;
  border-radius: 100px;
  text-decoration: none;
  font-weight: 500;
  display: block;
  width: 100%;
}

@media (max-width: 768px) {
  .space-main {
    height: 100svh;
    min-height: 100svh;
    padding: 0;
  }
  .solar-system {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
  }
  /* Hide desktop hover popup on mobile */
  .moon-popup {
    display: none !important;
  }
  /* Hide 2D card list — keep only 3D interaction */
  #mobile-planet-list {
    display: none !important;
  }
  /* Adjust header for mobile overlay */
  .space-header {
    padding-top: 1rem;
  }
  .space-header nav {
    padding: 0 1rem;
  }
  .hero-bio-wrap {
    padding: 0 1rem;
  }
  /* Galaxy back button higher on mobile */
  .galaxy-back-btn {
    bottom: 5rem;
  }
  /* Footer hidden on mobile */
  footer {
    display: none;
  }
  /* Add © to nav name on mobile */
  .nav-name::before {
    content: '© ';
  }
  /* Labels slightly smaller on mobile */
  .webgl-label {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
  }
  .webgl-label--moon {
    font-size: 0.65rem;
    padding: 0.2rem 0.4rem;
  }
}
@media (min-width: 769px) {
  #mobile-planet-list {
    display: none;
  }
}


/* Floating back button for subpages */
.floating-back-btn {
  position: fixed;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 0.6rem 1.5rem;
  border-radius: 100px;
  font-family: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 999;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  animation: fadeInSlideUp 0.6s ease forwards;
}

@keyframes fadeInSlideUp {
  from { opacity: 0; transform: translate(-50%, 20px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

.floating-back-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateX(-50%) scale(1.05);
}

@media (max-width: 768px) {
  .floating-back-btn {
    bottom: 2rem;
  }
}