/* ==========================================================================
   Simone Ventura · Portfolio
   ========================================================================== */

:root {
  --color-bg: #ffffff;
  --color-bg-soft: #f5f5f3;
  --color-red: #d6002a;
  --color-red-dark: #a80020;
  --color-ink: #141414;
  --color-ink-soft: #55534f;
  --color-line: #e7e4de;
  --color-white: #ffffff;

  --font-display: "Unbounded", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;

  --container-w: 1180px;
  --radius: 4px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset ---------- */
* { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3 { font-family: var(--font-display); margin: 0; line-height: 1.08; }
p { margin: 0; }
button { font: inherit; cursor: pointer; }

section { scroll-margin-top: 84px; }

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-red);
  color: #fff;
  padding: 12px 20px;
  z-index: 999;
}
.skip-link:focus { left: 16px; top: 16px; }

/* ---------- Eyebrow / section head ---------- */
.eyebrow {
  font-family: var(--font-display);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-red);
  margin: 0 0 14px;
}
.eyebrow--invert { color: #fff; opacity: 0.85; }

.section-head {
  max-width: 640px;
  margin: 0 0 56px;
}
.section-head h2 {
  font-size: clamp(1.9rem, 3.2vw, 2.7rem);
  font-weight: 800;
  letter-spacing: -0.01em;
}
.section-head--invert h2 { color: #fff; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14.5px;
  letter-spacing: 0.02em;
  padding: 16px 30px;
  border-radius: 2px 14px 2px 14px;
  border: 2px solid transparent;
  transition: transform 0.35s var(--ease), background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}
.btn-primary {
  background: var(--color-red);
  color: #fff;
}
.btn-primary:hover { background: var(--color-red-dark); transform: translateY(-2px); }

.btn-outline {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-ink);
}
.btn-outline:hover { border-color: var(--color-red); color: var(--color-red); transform: translateY(-2px); }

.btn-invert {
  background: #fff;
  color: var(--color-red);
}
.btn-invert:hover { background: var(--color-ink); color: #fff; transform: translateY(-2px); }

.btn-small { padding: 11px 20px; font-size: 13px; border-radius: 2px 10px 2px 10px; }

/* ---------- Wordmark ---------- */
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.wordmark-mark {
  width: 14px;
  height: 14px;
  background: var(--color-red);
  transform: rotate(45deg);
  flex-shrink: 0;
}
.wordmark-text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 14px;
  line-height: 1.05;
  letter-spacing: 0.01em;
  color: var(--color-ink);
  text-transform: uppercase;
}
.wordmark--small .wordmark-text { font-size: 13px; }
.wordmark--small { gap: 8px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.site-header.is-scrolled {
  border-bottom-color: var(--color-line);
  box-shadow: 0 8px 24px -18px rgba(0, 0, 0, 0.25);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 36px;
}
.site-nav ul {
  display: flex;
  gap: 30px;
}
.site-nav a:not(.btn) {
  font-size: 14.5px;
  font-weight: 500;
  position: relative;
  padding-bottom: 4px;
}
.site-nav ul a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--color-red);
  transition: width 0.25s var(--ease);
}
.site-nav ul a:not(.btn):hover::after { width: 100%; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ---------- Hero ---------- */
.hero {
  padding: 96px 0 0;
  overflow: hidden;
}
.hero-inner {
  max-width: 880px;
  padding-bottom: 72px;
}
.hero-title {
  font-size: clamp(2.8rem, 8vw, 5.6rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin-bottom: 28px;
}
.text-red { color: var(--color-red); }

.hero-lead {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--color-ink-soft);
  max-width: 560px;
  margin-bottom: 40px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.marquee {
  border-top: 2px solid var(--color-ink);
  border-bottom: 2px solid var(--color-ink);
  overflow: hidden;
  background: var(--color-ink);
}
.marquee-track {
  display: flex;
  width: max-content;
  gap: 28px;
  padding: 16px 0;
  animation: marquee 26s linear infinite;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.06em;
  color: #fff;
  white-space: nowrap;
}
.marquee-track .dot { color: var(--color-red); }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; }
}

/* ---------- Services ---------- */
.services { padding: 120px 0; }
.services-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--color-line);
  border: 1px solid var(--color-line);
}
.service-card {
  position: relative;
  background: #fff;
  padding: 36px 28px 32px;
  transition: background 0.3s ease, transform 0.3s ease;
}
.service-card:hover { background: var(--color-bg-soft); }
.service-icon {
  display: inline-flex;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  color: var(--color-red);
  border: 1.5px solid var(--color-line);
  border-radius: 2px 10px 2px 10px;
  margin-bottom: 22px;
}
.service-icon svg { width: 22px; height: 22px; }
.service-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.service-card p {
  font-size: 14.5px;
  color: var(--color-ink-soft);
}
.service-card--ai { background: #fff8f8; }
.service-badge {
  position: absolute;
  top: 24px; right: 24px;
  background: var(--color-red);
  color: #fff;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 9px;
  border-radius: 2px 8px 2px 8px;
}
.service-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-red);
  border-bottom: 1px solid currentColor;
}

/* ---------- AI showcase (signature block) ---------- */
.ai-showcase {
  background: var(--color-red);
  color: #fff;
  padding: 120px 0;
  position: relative;
  background-image: repeating-linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.035) 0 2px,
    transparent 2px 26px
  );
}
.ai-lead {
  color: rgba(255, 255, 255, 0.88);
  font-size: 1.05rem;
  max-width: 620px;
  margin-top: 18px;
}
.ai-case {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 48px;
  align-items: center;
}
.ai-case .ai-video { margin-bottom: 0; }
.ai-case-title {
  font-size: clamp(1.45rem, 2.3vw, 1.95rem);
  font-weight: 800;
  line-height: 1.25;
  color: #fff;
  margin-bottom: 18px;
}
.ai-case-title mark {
  background: #fff;
  color: var(--color-red);
  padding: 0 0.22em;
  border-radius: 2px 8px 2px 8px;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}
.ai-case-desc {
  color: rgba(255, 255, 255, 0.88);
  font-size: 1rem;
}
.ai-video {
  position: relative;
  border: 1.5px solid rgba(255, 255, 255, 0.45);
  border-radius: 2px 18px 2px 18px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: #000;
  margin-bottom: 28px;
}
.ai-video video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.ai-video-tag {
  position: absolute;
  top: 18px; left: 18px;
  z-index: 1;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #fff;
  background: rgba(0, 0, 0, 0.45);
  padding: 6px 11px;
  border-radius: 2px 8px 2px 8px;
  pointer-events: none;
}
.ai-folders {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin: 56px 0 44px;
}
.ai-folder {
  display: block;
  width: 100%;
  min-width: 0;
  padding: 32px 0 0;
  border: 0;
  background: none;
  color: #fff;
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.ai-folder:focus-visible { outline: none; }
.ai-folder:focus-visible .ai-folder-body { outline: 3px solid #fff; outline-offset: 5px; }
.ai-folder-body {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  aspect-ratio: 4 / 3;
  padding: 24px;
  border: 2px solid #fff;
  border-radius: 0 18px 2px 18px;
  background-color: var(--color-ink);
  background-size: cover;
  background-position: center;
  transition: transform 0.35s var(--ease), box-shadow 0.35s ease;
}
.ai-folder-body::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.25) 0%, rgba(0, 0, 0, 0) 35%, rgba(0, 0, 0, 0.72) 100%);
  pointer-events: none;
}
.ai-folder:hover .ai-folder-body {
  transform: translateY(-5px);
  box-shadow: 0 26px 44px -26px rgba(0, 0, 0, 0.55);
}
.ai-folder-tab {
  position: absolute;
  top: -32px;
  left: -2px;
  height: 32px;
  padding: 9px 20px 0;
  background: #fff;
  color: var(--color-red);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 2px 14px 0 0;
}
.ai-folder-count {
  position: absolute;
  top: 22px;
  left: 24px;
  z-index: 1;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.ai-folder-thumbs {
  position: absolute;
  top: 18px;
  right: 18px;
  z-index: 1;
  display: flex;
}
.ai-folder-thumbs img {
  width: 54px;
  height: 54px;
  object-fit: cover;
  border: 2px solid #fff;
  border-radius: 2px 8px 2px 8px;
  margin-left: -16px;
  box-shadow: 0 6px 14px -6px rgba(0, 0, 0, 0.5);
  transition: margin 0.35s var(--ease);
}
.ai-folder:hover .ai-folder-thumbs img { margin-left: -4px; }
.ai-folder-title {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.7rem, 3.2vw, 2.6rem);
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}
.ai-folder-pitch {
  position: relative;
  z-index: 1;
  font-size: 14px;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 14px;
  max-width: 34ch;
}
.ai-folder-open {
  position: relative;
  z-index: 1;
  align-self: flex-start;
  font-size: 13.5px;
  font-weight: 600;
  border-bottom: 1px solid currentColor;
}
.play-icon {
  align-self: center;
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  display: flex; align-items: center; justify-content: center;
  margin: auto 0;
}
.play-icon svg { width: 18px; height: 18px; color: #fff; margin-left: 2px; }
.portfolio-note {
  font-size: 13px;
  color: var(--color-ink-soft);
  margin-bottom: 36px;
}

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 90px;
  background: #0c0c0c;
  opacity: 0;
  transition: opacity 0.25s ease;
}
.lightbox[hidden] { display: none; }
.lightbox.is-open { opacity: 1; }
.lightbox-figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.lightbox-img {
  max-width: calc(100vw - 180px);
  max-height: calc(100vh - 170px);
  object-fit: contain;
  border-radius: 2px 18px 2px 18px;
}
.lightbox-caption {
  display: flex;
  align-items: baseline;
  gap: 14px;
  color: #fff;
  font-family: var(--font-display);
}
.lightbox-title {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.lightbox-counter { font-size: 13px; color: rgba(255, 255, 255, 0.6); }
.lightbox-btn {
  position: absolute;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, 0.5);
  background: transparent;
  color: #fff;
  transition: background 0.25s ease, border-color 0.25s ease;
}
.lightbox-btn[hidden] { display: none; }
.lightbox-btn:hover, .lightbox-btn:focus-visible {
  background: var(--color-red);
  border-color: var(--color-red);
  outline: none;
}
.lightbox-btn svg { width: 22px; height: 22px; }
.lightbox-close { top: 20px; right: 20px; }
.lightbox-prev { left: 20px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 20px; top: 50%; transform: translateY(-50%); }

/* ---------- Portfolio ---------- */
.portfolio { padding: 120px 0; }
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 220px;
  gap: 20px;
  margin-bottom: 20px;
}
.portfolio-tile {
  position: relative;
  border-radius: 2px 18px 2px 18px;
  background: linear-gradient(150deg, #efece6 0%, #e2ded5 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 18px;
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s ease;
}
.portfolio-tile:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -24px rgba(20, 20, 20, 0.35);
}
.portfolio-tile--tall { grid-row: span 2; }
.portfolio-tag {
  position: absolute;
  top: 16px; left: 16px;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-red);
  background: #fff;
  padding: 5px 10px;
  border-radius: 2px 8px 2px 8px;
}
.portfolio-label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  color: var(--color-ink);
}
.portfolio-tile .play-icon {
  border-color: rgba(20, 20, 20, 0.3);
}
.portfolio-tile .play-icon svg { color: var(--color-ink); }

.portfolio-tile--video {
  background: #000;
  padding: 0;
  display: block;
}
.portfolio-tile--video video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.portfolio-tile--wide { grid-column: span 2; }
.portfolio-tile--gallery {
  border: 0;
  padding: 18px;
  font: inherit;
  text-align: left;
  color: #fff;
  cursor: pointer;
  background-color: #000;
  background-size: cover;
  background-position: center;
}
.portfolio-tile--gallery::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 45%, rgba(0, 0, 0, 0.7) 100%);
  pointer-events: none;
}
.portfolio-tile--gallery:focus-visible { outline: 3px solid var(--color-red); outline-offset: 4px; }
.portfolio-gallery-title {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  line-height: 1;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.portfolio-tile--stat {
  background-color: #0c0f12;
  background-image: none;
}
.portfolio-tile--stat::after { display: none; }
.portfolio-stat-number {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.3rem, 3.4vw, 3rem);
  line-height: 1;
  letter-spacing: -0.02em;
}
.portfolio-stat-label {
  position: relative;
  z-index: 1;
  font-size: 15px;
  font-weight: 600;
  margin: 6px 0 10px;
}
.portfolio-stat-sub {
  position: relative;
  z-index: 1;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 14px;
}
.portfolio-gallery-open {
  position: relative;
  z-index: 1;
  align-self: flex-start;
  font-size: 13.5px;
  font-weight: 600;
  border-bottom: 1px solid currentColor;
}
.portfolio-video-tag {
  position: absolute;
  top: 16px; left: 16px;
  z-index: 1;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #fff;
  background: rgba(0, 0, 0, 0.45);
  padding: 6px 11px;
  border-radius: 2px 8px 2px 8px;
  pointer-events: none;
}

/* ---------- Formazione ---------- */
.training { padding: 120px 0; }
.training-lead {
  color: var(--color-ink-soft);
  font-size: 1.05rem;
  margin-top: 18px;
}
.training-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 48px;
}
.training-card {
  padding: 32px 26px;
  border: 1.5px solid var(--color-line);
  border-radius: 2px 18px 2px 18px;
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.training-card:hover { border-color: var(--color-red); transform: translateY(-4px); }
.training-icon {
  display: inline-flex;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  color: var(--color-red);
  border: 1.5px solid var(--color-line);
  border-radius: 2px 10px 2px 10px;
  margin-bottom: 22px;
}
.training-icon svg { width: 22px; height: 22px; }
.training-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; }
.training-card p { font-size: 14.5px; color: var(--color-ink-soft); }
.training-links { margin-top: 10px; display: flex; flex-direction: column; gap: 8px; }
.training-links a {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-red);
}
.training-links a:hover { text-decoration: underline; }

/* ---------- About ---------- */
.about { padding: 120px 0; background: var(--color-bg-soft); }
.about-inner {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 64px;
  align-items: center;
}
.about-avatar {
  width: 100%;
  aspect-ratio: 1;
  background: var(--color-ink);
  border-radius: 2px 40px 2px 40px;
  overflow: hidden;
}
.about-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.about-content h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); font-weight: 800; margin-bottom: 18px; }
.about-content p { color: var(--color-ink-soft); font-size: 1.02rem; max-width: 560px; }
.about-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 26px;
}
.about-tags li {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1.5px solid var(--color-ink);
  padding: 8px 14px;
  border-radius: 2px 10px 2px 10px;
}

/* ---------- Contact ---------- */
.contact { padding: 120px 0; }
.contact-inner {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 72px;
}
.contact h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); font-weight: 800; margin-bottom: 14px; }
.contact-lead { color: var(--color-ink-soft); margin-bottom: 36px; }
.contact-details { margin-bottom: 32px; }
.contact-details li { margin-bottom: 18px; }
.contact-label {
  display: block;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-red);
  margin-bottom: 4px;
}
.contact-details a { font-size: 1.05rem; font-weight: 600; }
.contact-details a:hover { color: var(--color-red); }

.social-list { display: flex; gap: 18px; }
.social-list a {
  font-size: 13.5px;
  font-weight: 600;
  border-bottom: 1px solid var(--color-line);
  padding-bottom: 2px;
}
.social-list a:hover { color: var(--color-red); border-color: var(--color-red); }

.contact-form { display: flex; flex-direction: column; gap: 22px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field label {
  font-family: var(--font-display);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}
.field input, .field textarea {
  font-family: var(--font-body);
  font-size: 15.5px;
  padding: 12px 2px;
  border: none;
  border-bottom: 1.5px solid var(--color-line);
  background: transparent;
  color: var(--color-ink);
  resize: vertical;
  transition: border-color 0.25s ease;
}
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--color-red);
}
.contact-form .btn { align-self: flex-start; margin-top: 6px; }
.form-status { font-size: 13.5px; color: var(--color-ink-soft); min-height: 1.2em; }
.form-status.is-success { color: var(--color-red); font-weight: 600; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-ink);
  color: rgba(255, 255, 255, 0.75);
  padding: 44px 0;
}
.site-footer .wordmark-text { color: #fff; }
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.social-list--footer a { color: rgba(255, 255, 255, 0.75); border-color: rgba(255, 255, 255, 0.2); }
.social-list--footer a:hover { color: #fff; border-color: #fff; }
.footer-copy { font-size: 13px; color: rgba(255, 255, 255, 0.5); }

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 46px; height: 46px;
  background: var(--color-ink);
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease, background 0.3s ease;
  z-index: 90;
}
.back-to-top svg { width: 18px; height: 18px; }
.back-to-top.is-visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-to-top:hover { background: var(--color-red); }

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid .service-card:last-child:nth-child(odd) { grid-column: 1 / -1; }
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .portfolio-tile--tall { grid-row: span 1; }
  .training-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-case { grid-template-columns: 1fr; gap: 28px; }
  .about-inner { grid-template-columns: 180px 1fr; gap: 40px; }
  .contact-inner { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 760px) {
  .site-nav {
    position: fixed;
    inset: 84px 0 0 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: 40px 24px;
    gap: 28px;
    transform: translateX(100%);
    transition: transform 0.35s var(--ease);
  }
  .site-nav.is-open { transform: translateX(0); }
  .site-nav ul { flex-direction: column; gap: 22px; }
  .site-nav ul a:not(.btn) { font-size: 1.3rem; font-weight: 600; font-family: var(--font-display); }
  .nav-toggle { display: flex; }
  .nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.is-open span:nth-child(2) { opacity: 0; }
  .nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .services-grid { grid-template-columns: 1fr; }
  .ai-folders { grid-template-columns: 1fr; gap: 36px; margin-top: 40px; }
  .ai-folder-thumbs img { width: 44px; height: 44px; }
  .ai-folder-body { padding: 20px; }
  .ai-folder-count { top: 20px; left: 20px; }
  .ai-folder-title { font-size: clamp(1.2rem, 5.8vw, 1.7rem); }
  .lightbox { padding: 72px 12px 96px; }
  .lightbox-img { max-width: calc(100vw - 24px); max-height: calc(100vh - 210px); }
  .lightbox-prev, .lightbox-next { top: auto; bottom: 22px; transform: none; }
  .lightbox-prev { left: calc(50% - 66px); }
  .lightbox-next { right: calc(50% - 66px); }
  .portfolio-grid { grid-template-columns: 1fr; }
  .portfolio-tile--wide { grid-column: span 1; }
  .training-grid { grid-template-columns: 1fr; }
  .about-inner { grid-template-columns: 1fr; text-align: left; }
  .about-avatar { width: 140px; }
  .services, .portfolio, .training, .about, .contact, .ai-showcase { padding: 80px 0; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}