/* ============================================================
   Shigeryu Studio — style.css
   Landing Page · Dark Theme · GitHub + Material inspired
   ============================================================ */

/* ── 1. CSS Variables ───────────────────────────────────────── */
:root {
  /* Colors */
  --bg-root:       #0d1117;
  --bg-card:       #161b22;
  --bg-card-hover: #1c2128;
  --bg-tag:        #21262d;
  --border:        #30363d;
  --border-hover:  #58a6ff;

  /* Text */
  --text-primary:   #e6edf3;
  --text-secondary: #8b949e;
  --text-muted:     #484f58;

  /* Accent — blue */
  --accent:       #58a6ff;
  --accent-hover: #79c0ff;
  --accent-glow:  rgba(88, 166, 255, .15);

  /* Under-construction — amber */
  --amber:        #f0b429;
  --amber-dark:   #d29922;
  --amber-glow:   rgba(240, 180, 41, .15);
  --amber-border: rgba(240, 180, 41, .35);

  /* Layout */
  --max-w:    960px;
  --nav-h:    60px;
  --radius:   8px;
  --radius-lg:14px;
  --gap:      1.25rem;

  /* Transitions */
  --t-fast:   .15s ease;
  --t-med:    .25s ease;

  /* Shadows */
  --shadow-card: 0 4px 24px rgba(0,0,0,.4);
  --glow-accent: 0 0 24px rgba(88,166,255,.2);
}

/* ── 2. Reset ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html                   { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  background: var(--bg-root);
  color:       var(--text-primary);
  line-height: 1.65;
  min-height:  100vh;
  -webkit-font-smoothing: antialiased;
}
img  { display: block; max-width: 100%; }
a    { color: var(--accent); text-decoration: none; transition: color var(--t-fast); }
a:hover                { color: var(--accent-hover); }
a:focus-visible        { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
ul   { list-style: none; }
button { cursor: pointer; font-family: inherit; }

/* ── 3. Typography ──────────────────────────────────────────── */
h1 { font-size: clamp(2rem, 6vw, 3.2rem); font-weight: 800; letter-spacing: -.04em; line-height: 1.15; }
h2 { font-size: clamp(1.25rem, 3vw, 1.6rem); font-weight: 700; letter-spacing: -.025em; }
h3 { font-size: 1rem; font-weight: 600; }
p  { color: var(--text-secondary); }

/* ── 4. Layout helpers ──────────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.sr-only {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap;
}

/* ── 5. Navigation ──────────────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(13, 17, 23, .88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}
.nav__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  gap: .6rem;
  color: var(--text-primary);
  font-weight: 700;
  font-size: .975rem;
  letter-spacing: -.01em;
  text-decoration: none;
}
.nav__logo:hover { color: var(--accent); }
.nav__logo-mark {
  width: 30px; height: 30px;
  background: linear-gradient(135deg, #1c2a3e 0%, #0d1117 100%);
  border: 1px solid var(--border);
  border-radius: 7px;
  display: flex; align-items: center; justify-content: center;
  font-size: .95rem; font-weight: 900;
  color: var(--accent);
  letter-spacing: -.03em;
  transition: border-color var(--t-med), box-shadow var(--t-med);
  flex-shrink: 0;
}
.nav__logo:hover .nav__logo-mark {
  border-color: var(--accent);
  box-shadow: var(--glow-accent);
}
/* Language toggle */
.lang-toggle {
  display: flex;
  gap: 2px;
  background: var(--bg-tag);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px;
}
.lang-toggle__btn {
  background: none;
  border: none;
  border-radius: 4px;
  color: var(--text-muted);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .07em;
  padding: .25rem .55rem;
  transition: all var(--t-fast);
}
.lang-toggle__btn:hover    { color: var(--text-secondary); }
.lang-toggle__btn.active   { background: var(--bg-card); color: var(--text-primary); }

/* ── 6. Socials row ─────────────────────────────────────────── */
.socials {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 2rem;
}
.social-link {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  color: var(--text-muted);
  font-size: .8rem;
  font-weight: 500;
  padding: .4rem .85rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  background: var(--bg-card);
  transition: color var(--t-med), border-color var(--t-med), transform var(--t-fast);
  text-decoration: none;
}
.social-link:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ── 6b. Hero ───────────────────────────────────────────────── */
.hero {
  padding: calc(var(--nav-h) + 5rem) 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
/* Subtle radial glow behind hero */
.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 50%; transform: translateX(-50%);
  width: 700px; height: 400px;
  background: radial-gradient(ellipse at 50% 0%,
    rgba(88,166,255,.09) 0%, transparent 70%);
  pointer-events: none;
}
.hero__studio-label {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}
.hero__title {
  margin-bottom: 1.75rem;
}
.hero__title .accent { color: var(--accent); }

/* Under-construction badge */
.uc-badge {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  background: var(--amber-glow);
  border: 1px solid var(--amber-border);
  border-radius: 100px;
  padding: .5rem 1.25rem;
  margin-bottom: 2rem;
  color: var(--amber);
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .02em;
  position: relative;
}
/* Pulsing dot */
.uc-badge__dot {
  width: 7px; height: 7px;
  background: var(--amber);
  border-radius: 50%;
  flex-shrink: 0;
  animation: pulse-amber 2s ease-in-out infinite;
}
@keyframes pulse-amber {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .4; transform: scale(.7); }
}

.hero__desc {
  max-width: 520px;
  margin: 0 auto 2.5rem;
  font-size: 1.05rem;
  color: var(--text-secondary);
}
.hero__cta-group {
  display: flex;
  justify-content: center;
  gap: .85rem;
  flex-wrap: wrap;
}

/* ── 7. Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .6rem 1.3rem;
  border-radius: var(--radius);
  font-size: .875rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all var(--t-med);
  text-decoration: none;
  white-space: nowrap;
}
.btn--primary {
  background: var(--accent);
  color: #0d1117;
  border-color: var(--accent);
}
.btn--primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #0d1117;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(88,166,255,.3);
}
.btn--secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border);
}
.btn--secondary:hover {
  border-color: var(--text-muted);
  background: var(--bg-card-hover);
  color: var(--text-primary);
  transform: translateY(-1px);
}

/* ── 8. Section commons ─────────────────────────────────────── */
.section {
  padding: 4rem 0;
}
.section__header {
  margin-bottom: 2.25rem;
}
.section__header h2 { margin-bottom: .4rem; }

/* Divider */
.divider {
  border: none;
  border-top: 1px solid var(--border);
}

/* ── 9. Projects grid ───────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--gap);
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 0;
  transition:
    border-color var(--t-med),
    transform var(--t-med),
    box-shadow var(--t-med);
  text-decoration: none;
  color: inherit;
}
.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}
.project-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Image cover — affiche l'image entière, sans crop */
.project-card__cover {
  width: 100%;
  height: 180px;
  background: var(--bg-tag);
  border-bottom: 1px solid var(--border);
  border-radius: calc(var(--radius-lg) - 1px) calc(var(--radius-lg) - 1px) 0 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}
.project-card__cover img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
}

/* Inner padding wrapper */
.project-card__inner {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: .85rem;
  flex: 1;
}
.project-card__tags {
  display: flex; flex-wrap: wrap; gap: .4rem;
}
.tag {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  padding: .2rem .55rem;
  border-radius: 100px;
  background: var(--bg-tag);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.tag--accent {
  background: var(--accent-glow);
  color: var(--accent);
  border-color: rgba(88,166,255,.35);
}
.tag--green {
  background: rgba(63,185,80,.12);
  color: #3fb950;
  border-color: rgba(63,185,80,.3);
}
.project-card__body { flex: 1; }
.project-card__body h3 { margin-bottom: .35rem; }
.project-card__body p  { font-size: .875rem; }
.project-card__link {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  font-size: .8rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: auto;
}
.project-card:hover .project-card__link { color: var(--accent-hover); }

/* ── 10. Footer ─────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  background: var(--bg-card);
}
.footer__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer__brand {
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-secondary);
}
.footer__links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}
.footer__links a {
  font-size: .8rem;
  color: var(--text-muted);
  transition: color var(--t-fast);
}
.footer__links a:hover { color: var(--text-secondary); }
.footer__copy {
  width: 100%;
  font-size: .72rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: .25rem;
}

/* ── 11. Responsive ─────────────────────────────────────────── */
@media (max-width: 600px) {
  .hero { padding-top: calc(var(--nav-h) + 3rem); }
  .hero__desc { font-size: .95rem; }
  h1 { font-size: 2rem; }
  .footer__inner { flex-direction: column; align-items: flex-start; }
  .footer__copy  { text-align: left; }
}