/* ============ Theme variables: four seasons ============ */
/* Spring is the default: soft blossom light, fresh green + sakura pink */
:root,
[data-theme="spring"] {
  --bg: #f7eae7;            /* petal pink */
  --bg-alt: #f0dbda;
  --text: #3a2e2e;
  --text-muted: #756259;
  --accent: #5c8d57;        /* fresh leaf green */
  --accent-warm: #d16a8a;   /* sakura pink */
  --card: #fdf6f4;
  --border: #e4cbc7;
  --shadow: 0 4px 20px rgba(120, 70, 80, 0.1);
}

/* Summer: dry, very bright, white and sun-bleached yellow */
[data-theme="summer"] {
  --bg: #fdfcf5;
  --bg-alt: #f7f0d8;
  --text: #403a28;
  --text-muted: #8a8163;
  --accent: #b3801c;        /* dry gold */
  --accent-warm: #d97c2b;   /* high sun */
  --card: #ffffff;
  --border: #ece3c4;
  --shadow: 0 4px 20px rgba(150, 120, 40, 0.1);
}

/* Autumn: semi-dark, cosy orange and brown */
[data-theme="autumn"] {
  --bg: #251a12;            /* roasted chestnut */
  --bg-alt: #2e2117;
  --text: #f2e5d5;
  --text-muted: #b3a08c;
  --accent: #e2954e;        /* pumpkin amber */
  --accent-warm: #c96b3f;   /* rust */
  --card: #2c2015;
  --border: #453224;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
}

/* Winter: dark night, violet, black and white */
[data-theme="winter"] {
  --bg: #0e0c16;            /* midnight */
  --bg-alt: #151226;
  --text: #eceaf4;
  --text-muted: #a29fb8;
  --accent: #a595e8;        /* moon violet */
  --accent-warm: #8fb8de;   /* ice blue */
  --card: #171429;
  --border: #2c2745;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  transition: background 0.3s, color 0.3s;
}

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

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { font-family: "Fraunces", Georgia, serif; }

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

/* ============ Header / nav ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  transition: background 0.3s, border-color 0.3s;
  border-bottom: 1px solid transparent;
}

/* transparent over the hero photo, solid once scrolled */
.site-header.scrolled {
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--border);
}

.nav {
  position: relative; /* anchors the mobile dropdown */
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.75rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: "Caveat", cursive;
  font-weight: 700;
  font-size: 1.7rem;
  color: #fff;
  transition: color 0.3s;
}
.nav-logo img {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
}
.site-header.scrolled .nav-logo { color: var(--text); }
.nav-logo:hover { text-decoration: none; color: var(--accent-warm); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-left: auto;
}

.nav-right {
  position: relative; /* anchors the season picker */
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-left: 1.5rem;
}

.nav-burger { display: none; }

.nav-links a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.3s;
}
.site-header.scrolled .nav-links a { color: var(--text-muted); }
.nav-links a:hover { color: var(--accent-warm); text-decoration: none; }

.theme-toggle {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 50%;
  width: 2.2rem;
  height: 2.2rem;
  display: grid;
  place-items: center;
  cursor: pointer;
  color: #fff;
  transition: color 0.3s, border-color 0.3s;
}
.site-header.scrolled .theme-toggle { border-color: var(--border); color: var(--text); }
.theme-toggle:hover { border-color: var(--accent-warm); color: var(--accent-warm); }

/* season picker dropdown (shared style with the language picker) */
.season-menu, .lang-menu {
  position: absolute;
  top: calc(100% + 0.6rem);
  right: 0;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.4rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  box-shadow: var(--shadow);
  z-index: 20;
}
.season-menu[hidden], .lang-menu[hidden] { display: none; }

.season-option, .lang-option {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 1.6rem 0.45rem 0.8rem;
  border: none;
  border-radius: 0.55rem;
  background: none;
  font: inherit;
  font-size: 0.9rem;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition: background 0.15s;
}
.season-option:hover, .lang-option:hover { background: var(--bg-alt); }
.season-option.active, .lang-option.active { color: var(--accent); font-weight: 600; }

/* first-visit nudge pointing at the season toggle */
.season-hint {
  position: fixed;
  z-index: 60;
  max-width: min(260px, 82vw);
  padding: 0.85rem 1.1rem;
  background: linear-gradient(
    160deg,
    color-mix(in srgb, var(--accent) 10%, var(--card)),
    var(--card) 65%
  );
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border));
  border-radius: 0.9rem;
  box-shadow: var(--shadow), 0 0 0 4px color-mix(in srgb, var(--accent) 12%, transparent);
  font-size: 0.98rem;
  font-weight: 500;
  line-height: 1.4;
  color: var(--text);
  opacity: 0;
  transform: translateY(-6px) scale(0.96);
  transform-origin: top center;
  transition: opacity 0.35s ease, transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
}
.season-hint.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  animation: season-hint-glow 2.4s ease-in-out 0.4s infinite;
}
.season-hint::before {
  content: "";
  position: absolute;
  top: -6px;
  left: var(--arrow-x, 50%);
  width: 12px;
  height: 12px;
  background: color-mix(in srgb, var(--accent) 10%, var(--card));
  border-left: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border));
  border-top: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border));
  transform: translateX(-50%) rotate(45deg);
}

@keyframes season-hint-glow {
  0%, 100% { box-shadow: var(--shadow), 0 0 0 4px color-mix(in srgb, var(--accent) 12%, transparent); }
  50% { box-shadow: var(--shadow), 0 0 0 7px color-mix(in srgb, var(--accent) 4%, transparent); }
}

@media (prefers-reduced-motion: reduce) {
  .season-hint.visible { animation: none; }
}

/* one season icon at a time */
.theme-toggle .season-icon { display: none; font-size: 1rem; line-height: 1; }
:root:not([data-theme]) .icon-spring,
[data-theme="spring"] .icon-spring,
[data-theme="summer"] .icon-summer,
[data-theme="autumn"] .icon-autumn,
[data-theme="winter"] .icon-winter { display: block; }

/* one language icon at a time */
.theme-toggle .lang-icon { display: none; font-size: 1rem; line-height: 1; }
:root:not([data-lang]) .icon-en,
[data-lang="en"] .icon-en,
[data-lang="fr"] .icon-fr { display: block; }

/* ---- Mobile nav : hamburger + dropdown ---- */
@media (max-width: 720px) {
  .nav-burger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 2.2rem;
    height: 2.2rem;
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
  }
  .nav-burger span {
    display: block;
    width: 22px;
    height: 2px;
    border-radius: 2px;
    background: #fff;
    transition: transform 0.3s, opacity 0.3s, background 0.3s;
  }
  .site-header.scrolled .nav-burger span { background: var(--text); }
  .nav-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .nav-links {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    margin: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    min-width: 190px;
    padding: 0.4rem;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 0.8rem;
    box-shadow: var(--shadow);
    opacity: 0;
    transform: translateY(-6px);
    pointer-events: none;
    transition: opacity 0.2s, transform 0.2s;
  }
  .nav-links.open {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }
  .nav-links a,
  .site-header.scrolled .nav-links a {
    color: var(--text);
    padding: 0.65rem 0.9rem;
    border-radius: 0.55rem;
    font-size: 1rem;
  }
  .nav-links a:hover { background: var(--bg-alt); color: var(--accent-warm); }
}

/* falling petals / leaves / snow */
#season-canvas {
  position: fixed;
  inset: 0;
  z-index: 4;
  pointer-events: none;
}

/* summer: glowing sun bathing the top of the page */
[data-theme="summer"] body::before {
  content: "";
  position: fixed;
  top: -30vmax;
  right: -14vmax;
  width: 75vmax;
  height: 75vmax;
  background: radial-gradient(circle,
    rgba(255, 231, 150, 0.55),
    rgba(255, 205, 100, 0.22) 42%,
    transparent 68%);
  pointer-events: none;
  z-index: 6;
  animation: sun-glow 7s ease-in-out infinite alternate;
}

@keyframes sun-glow {
  from { opacity: 0.7; transform: scale(1); }
  to { opacity: 1; transform: scale(1.07); }
}

/* ============ Hero: full-screen photo cover ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  text-align: center;
  background:
    linear-gradient(rgba(15, 18, 12, 0.35), rgba(15, 18, 12, 0.55)),
    url("../photo/PXL_20241011_081423098.jpg") center / cover no-repeat;
  color: #fff;
  padding: 5rem 1.5rem;
}

.hero-name {
  font-family: "Caveat", cursive;
  font-weight: 700;
  font-size: clamp(4.5rem, 14vw, 9rem);
  line-height: 1;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.45);
}

.hero-title {
  margin-top: 0.75rem;
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  font-weight: 500;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.92);
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.5);
}

.hero-sep { color: var(--accent-warm); margin: 0 0.35rem; }

.hero-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1.75rem;
}

.hero-links a {
  color: rgba(255, 255, 255, 0.85);
  transition: color 0.2s, transform 0.2s;
}
.hero-links a:hover { color: var(--accent-warm); transform: translateY(-3px); }

.hero-cta {
  display: inline-block;
  margin-top: 2.25rem;
  padding: 0.7rem 2rem;
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  border-radius: 999px;
  color: #fff;
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  backdrop-filter: blur(4px);
  transition: background 0.25s, border-color 0.25s, color 0.25s;
}
.hero-cta:hover {
  background: var(--accent-warm);
  border-color: var(--accent-warm);
  color: #1d150a;
  text-decoration: none;
}

.hero-scroll {
  position: absolute;
  bottom: 1.75rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.8);
  animation: bob 2.2s ease-in-out infinite;
}
.hero-scroll:hover { color: var(--accent-warm); }

@keyframes bob {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ============ Sections ============ */
.section { padding: 5.5rem 1.5rem; }

/* full-bleed alternating background band */
.section-alt {
  padding: 5.5rem 0;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 2.5rem;
  position: relative;
  display: inline-block;
}

/* amber brush underline */
.section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 55%;
  height: 5px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent-warm), transparent);
}

.section-lede {
  color: var(--text-muted);
  margin: -1.5rem 0 2.5rem;
  max-width: 34rem;
}

/* ============ Technologies ============ */
/* compact section: less vertical space than a standard band */
#technologies.section {
  padding-top: 3.25rem;
  padding-bottom: 3.25rem;
}

.tech-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.3rem 1.7rem;
}

.tech-item {
  flex: 0 0 auto;
  width: 74px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  transition: color 0.25s, transform 0.25s;
}
.tech-item svg { width: 30px; height: 30px; }
.tech-item:hover {
  color: var(--accent);
  transform: translateY(-4px);
}

.tech-item span {
  font-size: 0.85rem;
  font-weight: 500;
  text-align: center;
}

/* ============ About Me ============ */
.about-grid {
  display: grid;
  grid-template-columns: 340px minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 3rem;
  align-items: start;
}

.about-photo-col {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.about-photo-col .btn-resume { align-self: center; }

/* photo as a hand-placed polaroid print */
.polaroid {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  padding: 0.7rem 0.7rem 0.35rem;
  box-shadow: var(--shadow);
  transform: rotate(-2.5deg);
  transition: transform 0.3s ease;
  margin-top: 0.5rem;
}
.polaroid:hover { transform: rotate(0deg) scale(1.02); }

/* piece of tape holding the print */
.polaroid::before {
  content: "";
  position: absolute;
  top: -0.85rem;
  left: 50%;
  width: 6.5rem;
  height: 1.7rem;
  transform: translateX(-50%) rotate(-4deg);
  background: color-mix(in srgb, var(--accent-warm) 28%, transparent);
  border-left: 1px dashed color-mix(in srgb, var(--accent-warm) 45%, transparent);
  border-right: 1px dashed color-mix(in srgb, var(--accent-warm) 45%, transparent);
}

.polaroid img { border-radius: 2px; }

.polaroid figcaption {
  font-family: "Caveat", cursive;
  font-size: 1.3rem;
  color: var(--text-muted);
  text-align: center;
  padding: 0.45rem 0.25rem 0.3rem;
  line-height: 1.2;
}

.about-education {
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}

/* languages as passport stamps */
.lang-stamps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, max-content);
  gap: 0.9rem 0.8rem;
}

.lang-stamp {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.55rem 1.2rem 0.5rem;
  border: 1.5px dashed var(--accent);
  border-radius: 0.6rem;
  color: var(--accent);
  transform: rotate(-2deg);
  transition: transform 0.25s ease;
}
.lang-stamp:nth-child(even) {
  border-color: var(--accent-warm);
  color: var(--accent-warm);
  transform: rotate(2deg);
}
.lang-stamp:hover { transform: rotate(0deg) scale(1.05); }

/* flag as a little sticker on the stamp's corner */
.lang-flag {
  position: absolute;
  top: -0.55rem;
  right: -0.65rem;
  width: 21px;
  height: 14px;
  border-radius: 2px;
  overflow: hidden;
  transform: rotate(8deg);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
  outline: 1px solid var(--border);
}
.lang-stamp:nth-child(even) .lang-flag { transform: rotate(-8deg); }

@media (max-width: 420px) {
  .lang-stamps { grid-template-columns: repeat(2, max-content); }
}

/* teaser stamp for the next language: muted, emoji instead of a flag */
.lang-stamp-teaser {
  border-color: var(--text-muted);
  color: var(--text-muted);
}
.lang-flag-emoji {
  width: auto;
  height: auto;
  font-size: 15px;
  line-height: 1;
  overflow: visible;
  outline: none;
  box-shadow: none;
}

.lang-hello {
  font-family: "Caveat", cursive;
  font-size: 1.45rem;
  font-weight: 600;
  line-height: 1.1;
}
.lang-hello[lang="ja"] {
  font-size: 1.15rem;
  line-height: 1.4;
}

.lang-level {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.about-bio p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  max-width: 34rem;
}

.btn-resume {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  padding: 0.65rem 1.5rem;
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.95rem;
  transition: background 0.2s, transform 0.2s;
}
[data-theme="autumn"] .btn-resume,
[data-theme="winter"] .btn-resume { color: #16110a; }
.btn-resume:hover { transform: translateY(-2px); text-decoration: none; filter: brightness(1.05); }

.about-subtitle {
  font-family: "Inter", sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-warm);
  margin-bottom: 1.25rem;
}

.edu-item {
  padding-left: 1rem;
  border-left: 2px solid var(--border);
  margin-bottom: 1.5rem;
}
.edu-item:last-child { margin-bottom: 0; }

.edu-date {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.edu-degree {
  font-family: "Fraunces", serif;
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0.2rem 0;
}

.edu-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
}

@media (max-width: 1080px) {
  .about-grid { grid-template-columns: 300px 1fr; }
  .about-education {
    grid-column: 1 / -1;
    flex-direction: row;
    gap: 3rem;
  }
  .about-education .about-block { flex: 1; }
}

@media (max-width: 720px) {
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .about-photo {
    max-width: 320px;
    margin: 0.5rem auto 0;
  }
  .about-education { flex-direction: column; gap: 2.25rem; }
}

/* ============ Projects (card grid) ============ */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem;
}

.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1.1rem;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.3s, border-color 0.3s;
}
.project-card:hover {
  transform: translateY(-6px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  box-shadow: 0 18px 40px rgba(40, 45, 30, 0.16);
}

/* ---- Media : full-bleed image, no border, takes the space ---- */
.project-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}
.project-media img,
.media-placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.project-card:hover .project-media img,
.project-card:hover .media-placeholder {
  transform: scale(1.07);
}

.media-placeholder {
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--bg-alt), var(--border));
  color: var(--text-muted);
  font-size: 0.9rem;
}
.media-placeholder.tall { aspect-ratio: 3 / 4; }

/* scrim that fades in on hover */
.project-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 12, 7, 0.15) 0%, rgba(8, 12, 7, 0.55) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
}
.project-card:hover .project-media::after { opacity: 1; }

/* ---- Action buttons, centered over the image ---- */
.project-links {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.project-card:hover .project-links { opacity: 1; }

.project-link {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  color: #fff;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transform: translateY(14px) scale(0.8);
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), background 0.2s, color 0.2s;
}
.project-link:nth-child(2) { transition-delay: 0.06s; }
.project-card:hover .project-link { transform: none; }
.project-link:hover {
  background: #fff;
  color: var(--accent);
  text-decoration: none;
}

/* touch devices : no hover, keep image clean (links reachable via card) */
@media (hover: none) {
  .project-links { opacity: 1; }
  .project-media::after { opacity: 0.4; }
  .project-link { transform: none; }
}

/* ---- Body ---- */
.project-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.25rem 1.35rem 1.4rem;
}

.project-name {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0 0 0.55rem;
  transition: color 0.25s;
}
.project-card:hover .project-name { color: var(--accent); }

.wip-badge {
  font-family: "Inter", sans-serif;
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-warm);
  border: 1px solid var(--accent-warm);
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
  vertical-align: middle;
  margin-left: 0.4rem;
  white-space: nowrap;
}

.project-date {
  font-family: "Inter", sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  vertical-align: middle;
  margin-left: 0.5rem;
  white-space: nowrap;
}

.project-desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
  margin: 0;
}

.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  list-style: none;
  margin: auto 0 0;
  padding-top: 1.1rem;
}

.project-stack li {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.76rem;
  font-weight: 500;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.22rem 0.7rem;
  color: var(--text-muted);
}
.project-stack li i {
  font-size: 1rem;
  line-height: 1;
}

@media (max-width: 860px) {
  .project-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .project-grid { grid-template-columns: 1fr; }
}

/* ============ Timeline ============ */
.timeline {
  position: relative;
  padding-left: 1.75rem;
  border-left: 2px solid var(--border);
}

.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
}
.timeline-item:last-child { margin-bottom: 0; }

.timeline-item::before {
  content: "";
  position: absolute;
  left: calc(-1.75rem - 6px);
  top: 0.4rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-warm);
}

.timeline-date {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.timeline-role {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0.25rem 0;
}

.timeline-desc { color: var(--text-muted); }

.timeline-bullets,
.bullet-list {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
}
.timeline-bullets li,
.bullet-list li {
  position: relative;
  padding-left: 1.1rem;
  margin-bottom: 0.4rem;
  line-height: 1.55;
}
.timeline-bullets li::before,
.bullet-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ============ Masonry gallery ============ */
.masonry {
  columns: 3 220px;
  column-gap: 1rem;
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: 1rem;
  border-radius: 0.75rem;
  overflow: hidden;
  border: 1px solid var(--border);
  cursor: zoom-in;
  transition: transform 0.2s;
}
.masonry-item:hover { transform: scale(1.02); }

/* ============ Lightbox ============ */
.lightbox[hidden] { display: none; }

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(10, 12, 8, 0.9);
  display: grid;
  place-items: center;
  padding: 2.5rem 4.5rem 6rem;
}

.lightbox > img {
  max-width: 100%;
  max-height: 78vh;
  border-radius: 0.5rem;
}

.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: #fff;
  font-size: 2.5rem;
  cursor: pointer;
  line-height: 1;
}

.lightbox-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 3rem;
  height: 3rem;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s;
}
.lightbox-arrow:hover { background: rgba(255, 255, 255, 0.25); }
.lightbox-prev { left: 1rem; }
.lightbox-next { right: 1rem; }

.lightbox-caption {
  position: absolute;
  left: 50%;
  bottom: 4.9rem;
  transform: translateX(-50%);
  max-width: 80%;
  text-align: center;
  font-family: "Caveat", cursive;
  font-size: 1.4rem;
  line-height: 1.25;
  color: rgba(255, 255, 255, 0.92);
  pointer-events: none;
}
/* scientific names in italic, set in the site's serif */
.lightbox-caption.latin {
  font-family: "Fraunces", Georgia, serif;
  font-style: italic;
  font-size: 1.15rem;
}

.lightbox-thumbs {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.75rem;
  display: flex;
  gap: 0.5rem;
  padding: 0.25rem 1rem;
  overflow-x: auto;
}

.lightbox-thumbs img {
  width: 3.25rem;
  height: 3.25rem;
  flex-shrink: 0;
  object-fit: cover;
  border-radius: 0.35rem;
  cursor: pointer;
  opacity: 0.5;
  transition: opacity 0.2s;
}
.lightbox-thumbs img:first-child { margin-left: auto; }
.lightbox-thumbs img:last-child { margin-right: auto; }
.lightbox-thumbs img:hover { opacity: 0.8; }
.lightbox-thumbs img.active {
  opacity: 1;
  outline: 2px solid #fff;
}

@media (max-width: 640px) {
  .lightbox { padding: 2.5rem 0.75rem 6rem; }
  .lightbox-arrow {
    width: 2.5rem;
    height: 2.5rem;
    top: auto;
    bottom: 5.5rem;
    transform: none;
  }
  .lightbox-prev { left: 0.75rem; }
  .lightbox-next { right: 0.75rem; }
  .lightbox-caption {
    max-width: 58%;
    bottom: 5.6rem;
    font-size: 1.2rem;
  }
}

/* ============ Footer ============ */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ============ Scroll reveal ============ */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-scroll { animation: none; }
  [data-theme="summer"] body::before { animation: none; }
}

/* ============ Clickable project cards ============ */
/* stretched link: whole card navigates, hover buttons (z-index 2) stay on top */
.card-link {
  position: absolute;
  inset: 0;
  z-index: 1;
}

/* ============ Project detail pages ============ */
/* --- hero band: tinted, soft glows, the cover window overlaps its bottom edge --- */
.project-hero {
  background:
    radial-gradient(640px 340px at 85% 0%, color-mix(in srgb, var(--accent-warm) 13%, transparent), transparent 70%),
    radial-gradient(520px 300px at 5% 100%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 70%),
    var(--bg-alt);
  border-bottom: 1px solid var(--border);
  padding: 6.5rem 1.5rem 8.5rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 2.5rem;
}
.back-link:hover { color: var(--accent); text-decoration: none; }

.project-eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent-warm);
  margin: 0 0 0.7rem;
}

.project-title {
  font-size: clamp(2.6rem, 7vw, 4rem);
  line-height: 1.05;
  margin: 0 0 1.1rem;
}

.project-tagline {
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1.7;
  max-width: 42rem;
  margin: 0 0 1.6rem;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.meta-chip {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-muted);
  background: color-mix(in srgb, var(--card) 55%, transparent);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.28rem 0.85rem;
}

/* --- body: cover pulled up over the hero band --- */
.project-body-wrap { padding: 0 1.5rem 5.5rem; }

.project-cover {
  margin: -6.5rem 0 3.25rem;
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  overflow: hidden;
  background: var(--card);
  box-shadow: 0 24px 60px rgba(45, 38, 20, 0.18);
}
[data-theme="autumn"] .project-cover,
[data-theme="winter"] .project-cover { box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55); }

/* faux browser chrome on top of the screenshot */
.cover-bar {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.65rem 0.95rem;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}
.cover-bar span { width: 10px; height: 10px; border-radius: 50%; }
.cover-bar span:nth-child(1) { background: #e0655f; }
.cover-bar span:nth-child(2) { background: #e3a93c; }
.cover-bar span:nth-child(3) { background: #74b06d; }

.project-cover img {
  width: 100%;
  display: block;
  cursor: zoom-in;
}

/* --- main text left, sticky info card right --- */
.project-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  grid-template-areas: "main side";
  gap: 3.5rem;
  align-items: start;
}
.project-detail { grid-area: main; }

.project-detail h2 {
  font-size: 1.55rem;
  margin: 3rem 0 1.2rem;
  position: relative;
  display: inline-block;
}
.project-detail h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.3rem;
  width: 55%;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent-warm), transparent);
}
.project-detail h2:first-child { margin-top: 0; }

.project-detail p {
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 44rem;
  margin: 0 0 1rem;
}

/* features as a grid of small cards */
.feature-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  padding: 0;
  margin: 0.25rem 0 0;
}
.feature-grid li {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  padding: 1.15rem 1.25rem;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.feature-grid li:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.feature-grid h3 {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 1.02rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
}
.feature-grid h3::before {
  content: "";
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-warm);
}
.feature-grid p {
  font-size: 0.88rem;
  line-height: 1.6;
  margin: 0;
  max-width: none;
}

/* extra screenshots */
.project-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin: 0 0 1rem;
}
.project-gallery figure { margin: 0; }
.project-gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  cursor: zoom-in;
  transition: transform 0.25s, box-shadow 0.25s;
}
.project-gallery img:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

/* --- sidebar --- */
.project-sidebar {
  grid-area: side;
  position: sticky;
  top: 5.25rem;
}

.sidebar-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  box-shadow: var(--shadow);
  padding: 1.5rem;
}

.sidebar-meta { margin: 0 0 1.3rem; }
.sidebar-meta > div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.45rem 0;
  border-bottom: 1px dashed var(--border);
  font-size: 0.85rem;
}
.sidebar-meta > div:first-child { padding-top: 0; }
.sidebar-meta .k { color: var(--text-muted); }
.sidebar-meta .v { font-weight: 600; text-align: right; }

.sidebar-label {
  font-family: "Inter", sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin: 1.4rem 0 0.7rem;
}
.sidebar-card .project-stack { padding-top: 0; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.55rem 1.2rem;
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--bg-alt);
  color: var(--text);
  transition: border-color 0.2s, color 0.2s, transform 0.2s;
}
.btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
  transform: translateY(-2px);
}
.btn-block {
  width: 100%;
  justify-content: center;
}
.btn-block + .btn-block { margin-top: 0.6rem; }

@media (max-width: 860px) {
  .project-hero { padding: 5.5rem 1.5rem 7rem; }
  .project-cover { margin-top: -5.5rem; }
  .project-layout {
    grid-template-columns: 1fr;
    grid-template-areas: "side" "main";
    gap: 2rem;
  }
  .project-sidebar { position: static; }
}
@media (max-width: 640px) {
  .feature-grid { grid-template-columns: 1fr; }
}

/* ============ Prev / next project side rails ============ */
/* fixed on the far edges, faint page preview that wakes up on hover */
.proj-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  display: none;
  flex-direction: column;
  width: calc((100vw - 1240px) / 2 - 1.5rem);
  max-width: 230px;
  height: 60vh;
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: border-color 0.3s;
}
.proj-nav.prev { left: 0; border-left: none; border-radius: 0 1rem 1rem 0; }
.proj-nav.next { right: 0; border-right: none; border-radius: 1rem 0 0 1rem; }

/* stretched link above the preview and the label */
.proj-nav .card-link { z-index: 2; }

/* live page preview: the real page rendered at 1200px, scaled down.
   Inside the iframe the viewport is 1200px < 1500px, so the nested
   rails stay display:none and their own iframes never load. */
.proj-nav-frame {
  position: absolute;
  top: 0;
  left: 50%;
  width: 1200px;
  height: calc(60vh / 0.19);
  border: 0;
  transform: translateX(-50%) scale(0.19);
  transform-origin: top center;
  pointer-events: none;
  opacity: 0.35;
  filter: saturate(0.6);
  transition: opacity 0.35s ease, filter 0.35s ease;
}
.proj-nav:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
}
.proj-nav:hover .proj-nav-frame {
  opacity: 1;
  filter: none;
}

.proj-nav-body {
  position: relative;
  z-index: 1;
  margin-top: auto;
  padding: 2.5rem 1.15rem 1.2rem;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, transparent, color-mix(in srgb, var(--bg) 92%, transparent) 55%);
}
.proj-nav.next .proj-nav-body { text-align: right; }

.proj-nav-dir {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--text-muted);
}

.proj-nav-name {
  font-family: "Fraunces", serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
}
.proj-nav:hover .proj-nav-name { color: var(--accent); }

/* only shown when the 1240px container leaves real empty margins */
@media (min-width: 1500px) {
  .proj-nav { display: flex; }
}