/* ============================================================
   CARBON DESIGN — style.css
   ============================================================ */

/* ── Design Tokens ───────────────────────────────────────── */
:root {
  --bg:           #080808;
  --surface:      #111111;
  --accent:       #ffffff;
  --text-primary: #f0f0f0;
  --text-muted:   #888888;
  --border:       rgba(255, 255, 255, 0.08);
  --ease:         cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── Global Reset ────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-weight: 300;
  line-height: 1.8;
  overflow-x: hidden;
  cursor: none;
}

::selection {
  background: #ffffff;
  color: #000000;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 2px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #333333;
}

/* ── Magnetic Cursor ─────────────────────────────────────── */
.cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 6px;
  height: 6px;
  background: #ffffff;
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: width 0.2s ease, height 0.2s ease;
}

.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: width 0.3s ease, height 0.3s ease, border-color 0.3s ease;
}

.cursor-dot.expand {
  width: 10px;
  height: 10px;
}

.cursor-ring.expand {
  width: 60px;
  height: 60px;
  border-color: rgba(255, 255, 255, 0.2);
}

/* ── Navbar ──────────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 24px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.4s ease;
}

#navbar.nav-scrolled {
  background: rgba(8, 8, 8, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-logo {
  font-size: 13px;
  letter-spacing: 0.25em;
  font-weight: 300;
  color: #ffffff;
  text-decoration: none;
  text-transform: uppercase;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links {
  display: flex;
  gap: 40px;
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: #ffffff;
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 0;
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 6px 14px;
  transition: all 0.3s ease;
}

.lang-btn {
  background: transparent;
  border: none;
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  cursor: none;
  font-family: 'Inter', sans-serif;
  font-weight: 300;
  transition: color 0.3s ease;
  padding: 0;
}

.lang-btn.active,
.lang-btn:hover {
  color: #ffffff;
}

.lang-sep {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.2);
  margin: 0 6px;
  pointer-events: none;
}

/* ── Hero ────────────────────────────────────────────────── */
#hero {
  position: relative;
  height: 800vh;
}

.hero-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
}

#hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
}

/* ── Scroll Hint ─────────────────────────────────────────── */
.scroll-hint {
  position: fixed;
  top: 42%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  z-index: 100;
  transition: opacity 0.8s ease;
  pointer-events: none;
}

.scroll-hint span {
  font-size: 11px;
  letter-spacing: 0.4em;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 300;
}

.scroll-hint svg {
  width: 24px;
  height: 24px;
  stroke: rgba(255, 255, 255, 0.7);
  fill: none;
  stroke-width: 1;
  animation: scrollBounce 1.8s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(6px); }
}

.scroll-hint.hidden {
  opacity: 0;
}

/* ── Hero Text Section ───────────────────────────────────── */
.hero-headline {
  font-size: clamp(40px, 7vw, 100px);
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.05;
  margin-bottom: 32px;
  text-transform: uppercase;
  text-align: center;
}

.hero-subline {
  font-size: clamp(12px, 1.4vw, 16px);
  letter-spacing: 0.25em;
  color: #666666;
  font-weight: 300;
  margin-bottom: 48px;
}

.hero-cta {
  padding: 16px 40px;
  border: 1px solid #ffffff;
  background: transparent;
  color: #ffffff;
  font-size: 11px;
  letter-spacing: 0.25em;
  font-family: 'Inter', sans-serif;
  font-weight: 300;
  text-transform: uppercase;
  cursor: none;
  transition: all 0.4s var(--ease);
}

.hero-cta:hover {
  background: #ffffff;
  color: #000000;
}

#hero-text {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 24px;
  background: #080808;
  position: relative;
  overflow: hidden;
}

#hero-text a {
  text-decoration: none;
}

#particles-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

#hero-text > *:not(#particles-canvas) {
  position: relative;
  z-index: 1;
}

/* ── Section Shared ──────────────────────────────────────── */
.section-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: clamp(11px, 1vw, 13px);
  letter-spacing: 0.3em;
  color: var(--text-muted);
  margin-bottom: 80px;
  text-align: center;
  text-transform: uppercase;
  font-weight: 300;
}

/* ── Section Label (clip-path animated) ─────────────────── */
.section-label {
  font-size: clamp(11px, 1vw, 13px);
  letter-spacing: 0.3em;
  color: var(--text-muted);
  margin-bottom: 80px;
  text-align: center;
  text-transform: uppercase;
  font-weight: 300;
  clip-path: inset(0 100% 0 0);
}

/* ── Servizi ─────────────────────────────────────────────── */
#servizi {
  padding: 140px 80px;
  background: var(--bg);
  position: relative;
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(255, 255, 255, 0.015) 2px,
      rgba(255, 255, 255, 0.015) 4px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 2px,
      rgba(255, 255, 255, 0.015) 2px,
      rgba(255, 255, 255, 0.015) 4px
    );
}

.section-divider {
  width: 100%;
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
  margin-bottom: 0;
  transform-origin: left;
  transform: scaleX(0);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.06);
  margin-top: 80px;
}

.service-card {
  background: #080808;
  padding: 64px 48px;
  min-height: 380px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  opacity: 0;
  transition: background 0.4s var(--ease);
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(136, 68, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.service-card:hover {
  background: #0d0d0d;
}

.service-card:hover::before {
  opacity: 1;
  transform: scale(1.2);
  transition: all 0.6s ease;
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 48px;
}

.card-num {
  font-size: 10px;
  letter-spacing: 0.3em;
  color: #333333;
  text-transform: uppercase;
}

.card-title {
  font-size: clamp(22px, 2.5vw, 32px);
  font-weight: 300;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
  line-height: 1.2;
  color: var(--text-primary);
}

.card-desc {
  font-size: 13px;
  color: #555555;
  line-height: 1.9;
  font-weight: 300;
  margin-top: auto;
}

/* ── Perché Noi ──────────────────────────────────────────── */
#perche-noi {
  position: relative;
}

#perche-video-scrub {
  height: 600vh;
  position: relative;
}

.perche-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
}

#ambient-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.perche-video-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.2);
  z-index: 1;
}

#perche-content {
  background: #080808;
  padding: 160px 80px;
  position: relative;
  z-index: 2;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 960px;
  margin: 80px auto 0;
}

.value-card {
  position: relative;
  padding: 48px;
  background: #0a0a0a;
  overflow: hidden;
  cursor: default;
  z-index: 0;
}

.value-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid transparent;
  background:
    linear-gradient(#0a0a0a, #0a0a0a) padding-box,
    linear-gradient(135deg, rgba(136, 68, 255, 0.6), rgba(255, 68, 170, 0.3), rgba(255, 255, 255, 0.05)) border-box;
  pointer-events: none;
  z-index: -1;
}

.value-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(136, 68, 255, 0.8), transparent);
  transition: left 0.6s ease;
}

.value-card:hover::after {
  left: 100%;
}

.value-card:hover {
  background: #0d0d0d;
}

.value-prop {
  opacity: 0;
  transform: translateY(20px);
}

.value-icon {
  margin-bottom: 24px;
}

.value-icon svg {
  width: 32px;
  height: 32px;
  stroke: #ffffff;
  fill: none;
  stroke-width: 1;
  display: block;
}

.value-title {
  font-size: 16px;
  letter-spacing: 0.2em;
  font-weight: 300;
  margin-bottom: 12px;
  color: var(--text-primary);
  text-transform: uppercase;
}

.value-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ── Processo ────────────────────────────────────────────── */
#processo {
  padding: 160px 80px;
  background: #080808;
  position: relative;
}

.processo-container {
  position: relative;
  max-width: 800px;
  margin: 80px auto 0;
  padding-left: 80px;
}

.processo-line-svg {
  position: absolute;
  left: 24px;
  top: 0;
  width: 2px;
  height: 100%;
  overflow: visible;
  pointer-events: none;
  z-index: 0;
}

.process-steps {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.process-step {
  position: relative;
  padding: 48px 0;
  display: flex;
  gap: 48px;
  align-items: flex-start;
}

.step-node {
  position: absolute;
  left: -68px;
  top: 56px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #8844ff;
  box-shadow: 0 0 12px #8844ff, 0 0 24px rgba(136, 68, 255, 0.4);
  opacity: 0;
  z-index: 2;
}

.step-num {
  font-size: 10px;
  letter-spacing: 0.3em;
  color: #333333;
  padding-top: 8px;
  min-width: 32px;
  text-transform: uppercase;
}

.process-card {
  flex: 1;
  padding: 40px 48px;
  background: #0a0a0a;
  position: relative;
  overflow: hidden;
  z-index: 0;
}

.process-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid transparent;
  background:
    linear-gradient(#0a0a0a, #0a0a0a) padding-box,
    linear-gradient(135deg, rgba(136, 68, 255, 0.6), rgba(255, 68, 170, 0.3), rgba(255, 255, 255, 0.05)) border-box;
  pointer-events: none;
  z-index: -1;
}

.process-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(136, 68, 255, 0.8), transparent);
  transition: left 0.6s ease;
}

.process-card:hover::after {
  left: 100%;
}

.step-title {
  font-size: 12px;
  letter-spacing: 0.25em;
  font-weight: 300;
  margin-bottom: 14px;
  color: #f0f0f0;
  text-transform: uppercase;
}

.step-desc {
  font-size: 13px;
  color: #555555;
  line-height: 1.9;
  font-weight: 300;
}

/* ── Contatto ────────────────────────────────────────────── */
#contatto {
  padding: 160px 80px;
  background: var(--bg);
  text-align: center;
}

#contatto .section-title {
  font-size: clamp(32px, 5vw, 72px);
  font-weight: 300;
  letter-spacing: 0.1em;
  margin-bottom: 24px;
  color: var(--text-primary);
  text-transform: uppercase;
}

.contatto-sub {
  color: var(--text-muted);
  font-size: 14px;
  letter-spacing: 0.1em;
  margin-bottom: 56px;
}

.contact-cta-btn {
  padding: 18px 56px;
  border: 1px solid #ffffff;
  background: transparent;
  color: #ffffff;
  font-size: 11px;
  letter-spacing: 0.25em;
  font-family: 'Inter', sans-serif;
  font-weight: 300;
  text-transform: uppercase;
  cursor: none;
  transition: all 0.4s var(--ease);
}

.contact-cta-btn:hover {
  background: #ffffff;
  color: #000000;
}

/* ── Footer ──────────────────────────────────────────────── */
#footer {
  padding: 48px 80px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-copy {
  font-size: 11px;
  color: #444444;
  letter-spacing: 0.1em;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.footer-contact a,
.footer-contact span {
  font-size: 11px;
  color: #444444;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: color 0.3s ease;
  font-weight: 300;
}

.footer-contact a:hover {
  color: #888888;
}

/* ── Mobile ──────────────────────────────────────────────── */
@media (max-width: 768px) {
  body {
    cursor: auto;
  }

  .cursor-dot,
  .cursor-ring {
    display: none;
  }

  #navbar {
    padding: 20px 24px;
  }

  .nav-links a {
    display: none;
  }

  /* Hero — no black space, video below navbar */
  #hero {
    height: auto;
    min-height: unset;
    background: #080808;
  }

  .hero-sticky {
    position: relative;
    height: auto;
    min-height: unset;
    padding-top: 80px;
  }

  #hero-video {
    position: relative;
    inset: auto;
    width: 100%;
    height: auto;
    object-fit: contain;
    display: block;
  }

  .hero-overlay {
    display: none;
  }

  .scroll-hint {
    display: none;
  }

  /* Ambient video — shrink-to-fit with fade edges */
  #perche-video-scrub {
    height: auto;
    min-height: unset;
    position: relative;
  }

  .perche-sticky {
    position: relative;
    height: auto;
  }

  .perche-sticky::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to bottom, #080808, transparent);
    z-index: 2;
    pointer-events: none;
  }

  .perche-sticky::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to top, #080808, transparent);
    z-index: 2;
    pointer-events: none;
  }

  #ambient-video {
    position: relative;
    inset: auto;
    width: 100%;
    height: auto;
    object-fit: contain;
    display: block;
  }

  /* Content sections */
  #servizi,
  #processo,
  #contatto,
  #perche-content {
    padding: 100px 24px;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .service-card {
    min-height: auto;
  }

  .values-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  #processo {
    padding: 100px 24px;
  }

  .processo-container {
    margin-top: 48px;
    padding-left: 48px;
  }

  .process-step {
    padding: 40px 0;
  }

  .process-card {
    padding: 32px 24px;
  }

  .lang-btn,
  .hero-cta,
  .contact-cta-btn {
    cursor: auto;
  }

  #footer {
    flex-direction: column;
    align-items: center;
    gap: 16px;
    text-align: center;
    padding: 40px 24px;
  }

  .footer-contact {
    align-items: center;
  }
}