:root {
  --c-bg: #000000;
  --c-panel: #0a0a0a;
  --c-panel-soft: #121212;
  --c-text: #ffffff;
  --c-muted: #888888;
  --c-line: #1a1a1a;
  --c-accent: #e60000;
  --shell: min(1360px, calc(100% - 4rem));
  --space-sm: 1rem;
  --space-md: 2.5rem;
  --space-lg: 5rem;
  --space-xl: 10rem;
  --header-h: 120px;
}

/* Reset & Global */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  padding: 0;
  font-family: 'Montserrat', sans-serif;
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color .3s ease; }
a:hover { color: var(--c-accent); }

.site-shell { width: var(--shell); margin-inline: auto; }
.section-space { padding-block: var(--space-lg); }
.stack-xl > * + * { margin-top: var(--space-xl); }

/* Typography */
h1, h2, h3, h4 {
  font-family: 'Montserrat', sans-serif;
  margin: 0 0 1.5rem;
  font-weight: 500;
  letter-spacing: .02em;
}

.text-link {
  color: var(--c-accent);
  border-bottom: 1px solid transparent;
}
.text-link:hover {
  border-bottom-color: var(--c-accent);
}

/* Header - More premium transparent look */
.site-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding-block: 3rem 1.5rem;
  transition: all .5s cubic-bezier(0.165, 0.84, 0.44, 1);
  background: transparent; /* Totally transparent at start */
}
.site-header.is-scrolled {
  position: sticky;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  padding-block: 1.2rem;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.site-header__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}
.site-title {
  font-family: 'Permanent Marker', cursive;
  font-size: 2.4rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  font-weight: 400;
  line-height: 1.1;
  margin-bottom: 0;
  transition: transform .5s ease;
}
.site-header.is-scrolled .site-title {
  transform: scale(0.85);
}
.site-title-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.site-subtitle {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.35em;
  font-weight: 500;
  color: #ffffff;
  margin-top: -0.15rem;
  display: block;
  transition: transform .5s ease;
}
.site-header.is-scrolled .site-subtitle {
  transform: scale(0.85);
}

.menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  gap: 3rem;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .2em;
  font-weight: 500;
}
.menu-item a { transition: opacity .3s ease; }
.menu-item:hover a { opacity: 0.7; }
.menu-item.current-menu-item a { color: var(--c-accent); opacity: 1; }

/* Menu Toggle / Hamburger */
.menu-toggle {
  display: none;
  background: transparent;
  border: none;
  width: 40px;
  height: 40px;
  position: relative;
  cursor: pointer;
  z-index: 1000;
  padding: 0;
}
.hamburger, .hamburger::before, .hamburger::after {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  position: absolute;
  left: 8px;
  transition: all 0.3s ease-in-out;
}
.hamburger { top: 19px; }
.hamburger::before { content: ''; top: -8px; left: 0; }
.hamburger::after { content: ''; top: 8px; left: 0; }

.menu-is-open .hamburger { background: transparent; }
.menu-is-open .hamburger::before { transform: rotate(45deg); top: 0; }
.menu-is-open .hamburger::after { transform: rotate(-45deg); top: 0; }

.screen-reader-text {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
  word-wrap: normal !important;
}

/* Hero Slider */
.hero {
  position: relative;
  height: 100vh;
  width: 100%;
  overflow: hidden;
  background: #000;
}
.hero-slideshow {
  position: absolute;
  inset: 0;
}
.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.5s ease-in-out, transform 8s linear;
  transform: scale(1.1);
}
.hero-slide.is-active {
  opacity: 1;
  transform: scale(1);
}
.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle, rgba(0,0,0,0.1) 0%, rgba(0,0,0,0.4) 100%);
  text-align: center;
}
.hero__copy {
  max-width: 900px;
  padding: 2rem;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1.2s ease .5s, transform 1.2s ease .5s;
}
.hero-slideshow.is-ready .hero__copy {
  opacity: 1;
  transform: translateY(0);
}
.hero__title {
  font-size: clamp(2.5rem, 6vw, 5.5rem);
  text-transform: uppercase;
  letter-spacing: .15em;
  margin-bottom: 1rem;
  line-height: .9;
}
.hero__subtitle {
  font-family: 'Montserrat', sans-serif;
  font-size: 1rem;
  letter-spacing: .4em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.8);
}

/* Portfolio Filters - Pill Style */
.portfolio-filters-container {
  margin-block: 200px 5rem;
  position: relative;
  z-index: 10;
}
.portfolio-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.2rem;
}
.portfolio-subfilters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
  animation: filterFadeIn 0.4s ease forwards;
}
.filter-btn {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--c-text);
  padding: 0.8rem 2rem;
  border-radius: 50px;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}
.filter-btn:hover {
  border-color: #fff;
  transform: translateY(-2px);
}
.filter-btn.active {
  background: var(--c-text);
  color: #000;
  border-color: var(--c-text);
}
.filter-btn--sub {
  border-style: dashed;
  opacity: 0.85;
  font-size: 0.7rem;
  padding: 0.55rem 1.5rem;
}
.filter-btn--sub:hover, .filter-btn--sub.active {
  border-style: solid;
  opacity: 1;
}

@keyframes filterFadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Portfolio Grid */
.portfolio-grid {
  display: grid;
  gap: 3rem;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}
.portfolio-card {
  position: relative;
  overflow: hidden;
}
.portfolio-card__media {
  aspect-ratio: 1/1;
  overflow: hidden;
  position: relative;
  background: #0a0a0a;
  border-radius: 12px;
}
.portfolio-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .8s cubic-bezier(0.165, 0.84, 0.44, 1);
}
.portfolio-card:hover .portfolio-card__media img {
  transform: scale(1.1);
}
.portfolio-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.4);
  opacity: 0;
  transition: opacity .4s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
}
.portfolio-card:hover .portfolio-card__overlay {
  opacity: 1;
}
.portfolio-card__title {
  margin: 1.5rem 0 0;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1.4;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: .15em;
  color: var(--c-text);
  font-style: normal;
  opacity: 0.9;
}

/* Single Portfolio V2 - Split Layout */
.portfolio-split {
  display: grid;
  gap: 5rem;
  grid-template-columns: 1fr;
  align-items: start;
}
@media (min-width: 992px) {
  .portfolio-split { grid-template-columns: 1.1fr 0.9fr; }
}


.portfolio-split__media img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.portfolio-split__content {
  position: sticky;
  top: 160px;
}

.single-portfolio__title {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  text-transform: uppercase;
  letter-spacing: .1em;
  font-weight: 500;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.portfolio-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-block: 2.5rem;
  padding-block: 2rem;
  border-block: 1px solid var(--c-line);
}
.spec-item strong {
  display: block;
  text-transform: uppercase;
  font-size: .7rem;
  letter-spacing: .2em;
  color: var(--c-muted);
  margin-bottom: .5rem;
}
.spec-item span {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.1rem;
}

.portfolio-description {
  font-size: 1rem;
  color: #bbb;
}

.section-divider {
  border: none;
  border-top: 1px solid var(--c-line);
  margin-block: 5rem;
}

/* Gallery Grid */
.gallery-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
}
.gallery-item {
  border-radius: 8px;
  overflow: hidden;
}
.gallery-item img {
  transition: transform .6s ease;
}
.gallery-item:hover img {
  transform: scale(1.05);
}

/* Biografia */
.bio-layout {
  display: grid;
  gap: 5rem;
  grid-template-columns: 1fr;
  align-items: center;
}
.bio-image img {
  width: 100%;
  filter: grayscale(20%);
}
.prose {
  font-size: 1.15rem;
  color: #dddddd;
  line-height: 1.9;
}

/* Footer */
.site-footer {
  padding-block: 4rem 2rem;
  border-top: 1px solid var(--c-line);
  text-align: center;
}
.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}
.footer-socials {
  display: flex;
  justify-content: center;
  gap: 3rem;
}
.footer-socials a {
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .25em;
}
.site-footer__note {
  font-size: .75rem;
  color: var(--c-muted);
  text-transform: uppercase;
  letter-spacing: .15em;
  margin-top: 2rem;
}

/* About Page Split Layout */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  min-height: 100vh;
}
.about-image {
  position: relative;
  min-height: 50vh;
}
.about-image__inner {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center top;
  filter: grayscale(5%);
}
.about-image__placeholder {
  position: absolute;
  inset: 0;
  background: var(--c-panel-soft);
}
.about-content {
  display: flex;
  align-items: center;
  padding: 10rem clamp(2rem, 8vw, 6rem) 6rem;
}
.about-content__inner {
  max-width: 720px;
  margin-inline: auto;
}
.about-header {
  margin-bottom: 3rem;
  text-align: center;
}

.section-space-xl { padding-top: 160px; padding-bottom: 5rem; }

/* Contacts Page */
.contacts-layout {
  display: grid;
  gap: 4rem;
  grid-template-columns: 0.8fr 1.2fr;
  align-items: start;
}
@media (max-width: 991px) {
  .contacts-layout { grid-template-columns: 1fr; }
}

.contacts-title {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(2rem, 4.5vw, 3rem);
  text-transform: uppercase;
  letter-spacing: .15em;
  font-weight: 500;
  margin-bottom: 2rem;
  line-height: 1.1;
}

.contacts-details {
  margin-top: 2.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--c-line);
}
.contact-item {
  margin-bottom: 2rem;
}
.contact-item strong {
  display: block;
  text-transform: uppercase;
  font-size: .8rem;
  letter-spacing: .15em;
  margin-bottom: .5rem;
  color: var(--c-muted);
}

/* Premium Form */
.premium-form {
  background: var(--c-panel);
  padding: 2.5rem 3.5rem;
  border-radius: 24px;
  border: 1px solid var(--c-line);
}
@media (max-width: 768px) {
  .premium-form { padding: 2.5rem 1.5rem; }
}
.form-group {
  margin-bottom: 1.6rem;
}
.form-group label {
  display: block;
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .25em;
  margin-bottom: 0.6rem;
  color: var(--c-muted);
}
.form-group input,
.form-group textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--c-line);
  padding: 0.8rem 0;
  color: var(--c-text);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color .4s ease;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-bottom-color: var(--c-text);
}

.btn-premium {
  background: var(--c-accent);
  color: #fff;
  border: none;
  padding: 1.1rem 3rem;
  border-radius: 60px;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: .25em;
  font-weight: 600;
  cursor: pointer;
  transition: all .4s cubic-bezier(0.165, 0.84, 0.44, 1);
  width: 100%;
}
.btn-premium:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(230, 0, 0, 0.4);
}

/* Responsive Utilities */
@media (min-width: 992px) {
  .about-grid { grid-template-columns: 1fr 1fr; }
  .about-image { height: 100vh; position: sticky; top: 0; }
  .bio-layout { grid-template-columns: .8fr 1.2fr; }
  .site-header__inner { flex-direction: column; }
}

@media (max-width: 991px) {
  .contacts-layout { grid-template-columns: 1fr; }
}

/* --- Mobile Specific Optimization --- */
@media (max-width: 768px) {
  :root { 
    --shell: calc(100% - 2.5rem); 
    --space-lg: 3rem;
  }

  .site-header { padding-block: 0.8rem; }
  .site-header__inner { 
    flex-direction: row; 
    justify-content: space-between; 
    align-items: center; 
  }
  
  .site-title { font-size: 1.2rem; letter-spacing: .05em; line-height: 1.1; }
  .site-subtitle { font-size: 0.45rem; letter-spacing: .25em; margin-top: -0.05rem; color: #ffffff; }

  .menu-toggle { display: block; }
  
  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    background: rgba(0,0,0,0.98);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    pointer-events: none;
  }

  .menu-is-open .site-nav {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  
  .menu-is-open .site-header { 
    position: fixed !important; 
    top: 0; 
    background: transparent !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    filter: none !important;
    border-bottom: none !important;
    padding-block: 1.2rem !important; /* Force consistent padding when menu open */
  }

  .menu--primary {
    flex-direction: column;
    text-align: center;
    gap: 2rem;
  }
  .menu--primary .menu-item a {
    font-size: 1.2rem;
    letter-spacing: .3em;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
  }

  .menu-is-open .menu--primary .menu-item a {
    opacity: 1;
    transform: translateY(0);
  }

  /* Staggered entry for menu items */
  .menu-is-open .menu--primary .menu-item:nth-child(1) a { transition-delay: 0.2s; }
  .menu-is-open .menu--primary .menu-item:nth-child(2) a { transition-delay: 0.3s; }
  .menu-is-open .menu--primary .menu-item:nth-child(3) a { transition-delay: 0.4s; }
  .menu-is-open .menu--primary .menu-item:nth-child(4) a { transition-delay: 0.5s; }
  .menu-is-open .menu--primary .menu-item:nth-child(5) a { transition-delay: 0.6s; }

  /* Spacing Adjustments */
  .contacts-layout { gap: 3rem; }
  .section-space-xl { padding-top: 220px; padding-bottom: 3rem; }
  .about-content { padding-block: 6rem 4rem; }
  
  /* Typography Scale */
  h1 { font-size: 2.2rem !important; }
  h2 { font-size: 1.8rem !important; }
  .hero__title { font-size: 2.8rem; }
  .hero__subtitle { font-size: 0.8rem; letter-spacing: .3em; }

  /* Grid Adjustments */
  .portfolio-grid { gap: 2rem; }
  .portfolio-filters-container { 
    margin-block: 140px 3rem; 
    padding-inline: 1rem;
  }
  .portfolio-filters {
    gap: 0.8rem;
  }
  .portfolio-subfilters {
    gap: 0.7rem;
    margin-top: 1.5rem;
  }
  .filter-btn { padding: 0.6rem 1.4rem; font-size: 0.7rem; }
  
  .portfolio-specs { grid-template-columns: 1fr; gap: 1.2rem; }
}

/* Premium feedback and utilities */
.btn-premium:active, .filter-btn:active, .portfolio-card:active {
  transform: scale(0.97);
  transition: transform 0.1s ease;
}

.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease;
  cursor: pointer;
}
.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
}
.back-to-top:hover {
  background: var(--c-accent);
  border-color: var(--c-accent);
}
.back-to-top svg { width: 20px; height: 20px; transition: transform 0.3s ease; }
.back-to-top:hover svg { transform: translateY(-3px); }

/* Utils */
.stack-md > * + * { margin-top: 2rem; }
.stack-sm > * + * { margin-top: 1.2rem; }

/* Collage Section */
.collage-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: 240px;
  gap: 1.5rem;
}

.collage-item {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  background: var(--c-panel);
}

.collage-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.165, 0.84, 0.44, 1), filter 0.8s ease;
  filter: grayscale(15%);
}

.collage-item:hover img {
  transform: scale(1.06);
  filter: grayscale(0%);
}

.collage-item__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  opacity: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.4s ease;
}

.collage-item:hover .collage-item__overlay {
  opacity: 1;
}

.collage-item__zoom-icon {
  color: #fff;
  font-size: 1.8rem;
  font-weight: 300;
  border: 1px solid rgba(255, 255, 255, 0.4);
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  transition: all 0.3s ease;
}

.collage-item:hover .collage-item__zoom-icon {
  transform: scale(1.1);
  border-color: #fff;
  background: rgba(230, 0, 0, 0.85); /* Accent color on hover */
}

/* Custom grid item spans for dynamic collage layout */
.collage-item--1 {
  grid-column: span 4;
  grid-row: span 2;
}

.collage-item--2 {
  grid-column: span 4;
  grid-row: span 1;
}

.collage-item--3 {
  grid-column: span 4;
  grid-row: span 1;
}

.collage-item--4 {
  grid-column: span 8;
  grid-row: span 2;
}

.collage-item--5 {
  grid-column: span 4;
  grid-row: span 2;
}

.collage-item--6 {
  grid-column: span 8;
  grid-row: span 1;
}

/* Responsive Collage Styles */
@media (max-width: 991px) {
  .collage-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 280px;
    gap: 1rem;
  }
  .collage-item {
    grid-column: span 1 !important;
    grid-row: span 1 !important;
  }
}

@media (max-width: 575px) {
  .collage-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: 255px;
  }
}