/* ============================================================
   base.css — Stili condivisi: home e pagine progetto
   Matteo Groppi Photography
   ============================================================ */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --black: #0a0a0a; --dark: #111111; --mid: #1a1a1a; --gray: #2e2e2e;
  --light-gray: #888; --off-white: #d4cfc8; --white: #f0ece6;
  --accent: #c8a97e; --accent-dim: #8a6f50;
}
html { scroll-behavior: smooth; }
body { background: var(--black); color: var(--off-white); font-family: 'Montserrat', sans-serif; font-weight: 300; font-size: 14px; letter-spacing: 0.02em; overflow-x: hidden; }
.cursor { width: 8px; height: 8px; background: var(--accent); border-radius: 50%; position: fixed; pointer-events: none; z-index: 9999; transition: transform 0.15s ease; transform: translate(-50%,-50%); }
.cursor-ring { width: 32px; height: 32px; border: 1px solid var(--accent-dim); border-radius: 50%; position: fixed; pointer-events: none; z-index: 9998; transition: transform 0.4s cubic-bezier(0.16,1,0.3,1), width 0.3s, height 0.3s; transform: translate(-50%,-50%); opacity: 0.6; }
body::before { content: ''; position: fixed; inset: 0; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E"); pointer-events: none; z-index: 100; opacity: 0.4; }

/* NAV */
nav { position: fixed; top: 0; left: 0; right: 0; z-index: 50; padding: 2rem 3rem; display: flex; justify-content: space-between; align-items: center; background: linear-gradient(to bottom, rgba(10,10,10,0.95) 0%, transparent 100%); }
.nav-logo { font-family: 'Cormorant Garamond', serif; font-size: 1.2rem; font-weight: 300; letter-spacing: 0.15em; color: var(--white); text-decoration: none; text-transform: uppercase; }
.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a { color: var(--light-gray); text-decoration: none; font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; transition: color 0.3s; position: relative; }
.nav-links a::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 1px; background: var(--accent); transition: width 0.3s; }
.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after { width: 100%; }
.nav-hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; z-index: 60; }
.nav-hamburger span { display: block; width: 24px; height: 1px; background: var(--off-white); transition: all 0.3s; }
.nav-hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* LANGUAGE TOGGLE */
.nav-lang { display: flex; gap: 0.3rem; align-items: center; margin-left: 1.5rem; }
.nav-lang-sep { font-size: 0.55rem; color: var(--gray); padding: 0 0.1rem; }
.nav-lang-btn { background: none; border: none; font-family: 'Montserrat', sans-serif; font-size: 0.6rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--light-gray); cursor: pointer; padding: 0.2rem 0.3rem; transition: color 0.3s; }
.nav-lang-btn.active { color: var(--accent); }
.nav-lang-btn:hover { color: var(--white); }

/* SECTION BASE */
section { padding: 8rem 3rem; position: relative; }
.section-label { font-size: 0.6rem; letter-spacing: 0.4em; text-transform: uppercase; color: var(--accent); margin-bottom: 2.5rem; display: flex; align-items: center; gap: 1.5rem; }
.section-label::after { content: ''; flex: 1; max-width: 60px; height: 1px; background: var(--accent-dim); }

/* GALLERY EXPAND ICON */
.gallery-item-expand { position: absolute; top: 0.8rem; right: 0.8rem; width: 28px; height: 28px; border: 1px solid rgba(200,169,126,0.5); display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity 0.3s; font-size: 0.9rem; color: var(--accent); background: rgba(10,10,10,0.6); }

/* FOOTER */
footer { padding: 2rem 3rem; border-top: 1px solid var(--gray); display: flex; justify-content: space-between; align-items: center; background: var(--black); }
footer span { font-size: 0.6rem; letter-spacing: 0.15em; color: var(--light-gray); text-transform: uppercase; }

/* LIGHTBOX */
.lightbox { position: fixed; inset: 0; background: rgba(5,5,5,0.98); z-index: 400; display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; transition: opacity 0.4s; }
.lightbox.open { opacity: 1; pointer-events: all; }
.lightbox-img { max-width: 88vw; max-height: 88vh; object-fit: contain; transform: scale(0.95); transition: transform 0.5s cubic-bezier(0.16,1,0.3,1), opacity 0.3s; }
.lightbox.open .lightbox-img { transform: scale(1); }
.lightbox-close { position: fixed; top: 2rem; right: 2.5rem; background: none; border: none; color: var(--light-gray); font-size: 1.5rem; cursor: pointer; transition: color 0.3s; font-family: 'Cormorant Garamond', serif; line-height: 1; z-index: 410; }
.lightbox-close:hover { color: var(--accent); }
.lightbox-nav { position: fixed; top: 50%; transform: translateY(-50%); background: none; border: 1px solid var(--gray); color: var(--off-white); width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all 0.3s; font-size: 1.1rem; z-index: 410; }
.lightbox-nav:hover { border-color: var(--accent); color: var(--accent); }
.lightbox-prev { left: 2rem; }
.lightbox-next { right: 2rem; }
.lightbox-counter { position: fixed; bottom: 2rem; left: 50%; transform: translateX(-50%); font-family: 'Cormorant Garamond', serif; font-size: 1rem; font-style: italic; color: var(--accent); }

/* SCROLL REVEAL — attivo solo in modalità IT */
body:not([data-lang="en"]) .reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.9s cubic-bezier(0.16,1,0.3,1), transform 0.9s cubic-bezier(0.16,1,0.3,1); }
body:not([data-lang="en"]) .reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.35s; }

/* LINGUA — visibilità contenuti */
body:not([data-lang="en"]) .lang-en { display: none; }
body[data-lang="en"] .lang-it { display: none !important; }
body[data-lang="en"] .lang-en { display: block; }
body[data-lang="en"] span.lang-en { display: inline; }
body[data-lang="en"] a.lang-en { display: inline; }
body[data-lang="en"] .act-title.lang-en { display: block; }
body[data-lang="en"] .book-badge.lang-en { display: inline-block; }
body[data-lang="en"] .project-nav-dir.lang-en { display: block; }

/* MOBILE — parti condivise */
@media (max-width: 768px) {
  body { cursor: auto; }
  .cursor, .cursor-ring { display: none; }
  nav { padding: 0.75rem 1.2rem; }
  .nav-hamburger { display: flex; }
  .nav-links { position: fixed; top: 0; right: -100%; height: 100vh; width: 70vw; max-width: 280px; background: var(--dark); border-left: 1px solid var(--gray); flex-direction: column; justify-content: center; align-items: flex-start; padding: 3rem 2.5rem; gap: 2.5rem; transition: right 0.4s cubic-bezier(0.16,1,0.3,1); z-index: 55; }
  .nav-links.open { right: 0; }
  .nav-links a { font-size: 0.9rem; }
  section { padding: 2.5rem 1.2rem; }
  footer { flex-direction: column; gap: 0.8rem; text-align: center; padding: 1.5rem 1.2rem; }
  .lightbox-nav { width: 56px; height: 56px; }
  .lightbox-prev { left: 0.3rem; }
  .lightbox-next { right: 0.3rem; }
  .lightbox-img { max-width: 96vw; max-height: 82vh; }
}