/* ============================================================
   ORION AGENCY — style.css
   Light/Dark theme · Inter · Minimal & Conversion-focused
   ============================================================ */

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

/* ---------- Design tokens ---------- */
:root {
  /* Dark theme (default) */
  --bg:          #0A0A0A;
  --bg-2:        #111111;
  --bg-3:        #1A1A1A;
  --bg-4:        #333333;
  --text:        #FFFFFF;
  --text-dim:    #888888;
  --text-dim-2:  #AAAAAA;
  --border:      rgba(255, 255, 255, 0.07);
  --border-hover:rgba(255, 255, 255, 0.18);
  --btn-bg:      #FFFFFF;
  --btn-text:    #0A0A0A;
  --accent:      #3B82F6;
  --accent-text: #FFFFFF;
  --card-shine:  rgba(255, 255, 255, 0.22);

  --font:        'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --ease:        cubic-bezier(0.4, 0, 0.2, 1);
  --trans:       0.28s var(--ease);

  --max-w:       1160px;
  --pad-x:       24px;
  --pad-section: 112px 0;
}

:root[data-theme="light"] {
  --bg:          #FFFFFF;
  --bg-2:        #F6F6F7;
  --bg-3:        #F1F1F2;
  --bg-4:        #D1D5DB;
  --text:        #0A0A0A;
  --text-dim:    #6B7280;
  --text-dim-2:  #4B5563;
  --border:      #E5E7EB;
  --border-hover:#D1D5DB;
  --btn-bg:      #0A0A0A;
  --btn-text:    #FFFFFF;
  --accent:      #2563EB;
  --accent-text: #FFFFFF;
  --card-shine:  rgba(0, 0, 0, 0.12);
}

/* ---------- Base ---------- */
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
  transition: background var(--trans), color var(--trans);
}

body.menu-open {
  overflow: hidden;
}

img { display: block; max-width: 100%; }
a   { color: inherit; text-decoration: none; }

/* ---------- Layout helpers ---------- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

.section {
  padding: var(--pad-section);
}

.section-dark {
  background: var(--bg-2);
}

.section-header {
  margin-bottom: 64px;
}

.section-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 14px;
}

.section-header h2 {
  font-size: clamp(30px, 4.5vw, 50px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.08;
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0);    }
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.25; transform: scaleY(0.8); }
  50%       { opacity: 0.7;  transform: scaleY(1);   }
}

.fade-in {
  opacity: 0;
  animation: fadeInUp 0.9s var(--ease) forwards;
}
.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.30s; }
.delay-3 { animation-delay: 0.48s; }

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity   0.72s var(--ease),
    transform 0.72s var(--ease);
}
.reveal.delay-1 { transition-delay: 0.10s; }
.reveal.delay-2 { transition-delay: 0.20s; }
.reveal.delay-3 { transition-delay: 0.30s; }
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   BUTTON
   ============================================================ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--btn-bg);
  color: var(--btn-text);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 15px 28px;
  border: none;
  border-radius: 3px;
  cursor: pointer;
  transition: transform var(--trans), box-shadow var(--trans), background var(--trans);
  white-space: nowrap;
}

.btn-primary svg {
  transition: transform var(--trans);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(0, 0, 0, 0.18);
}

:root:not([data-theme="light"]) .btn-primary:hover {
  box-shadow: 0 10px 32px rgba(255, 255, 255, 0.18);
}

.btn-primary:hover svg {
  transform: translateX(3px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}

/* ============================================================
   HEADER
   ============================================================ */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 22px 0;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition:
    background  0.4s var(--ease),
    padding     0.4s var(--ease),
    border-color 0.4s var(--ease),
    backdrop-filter 0.4s var(--ease);
}

#header.scrolled {
  background: rgba(10, 10, 10, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 14px 0;
  border-bottom-color: var(--border);
}

/* Light mode: header stays solid so the logo always has contrast */
:root[data-theme="light"] #header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--border);
}

:root[data-theme="light"] #header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  padding: 14px 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}

.logo-img {
  display: block;
  height: 96px;
  width: auto;
  max-width: 320px;
  object-fit: contain;
  object-position: left center;
  transition: opacity var(--trans), filter var(--trans);
}

:root[data-theme="light"] .logo-img {
  filter: brightness(0);
}

.logo:hover .logo-img {
  opacity: 0.75;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dim);
  letter-spacing: 0.01em;
  transition: color var(--trans);
}

.nav-links a:hover {
  color: var(--text);
}

.nav-links .nav-cta {
  color: var(--text);
  border: 1px solid var(--border);
  padding: 9px 20px;
  border-radius: 3px;
  transition: background var(--trans), border-color var(--trans), color var(--trans);
}

.nav-links .nav-cta:hover {
  background: var(--btn-bg);
  color: var(--btn-text);
  border-color: var(--btn-bg);
}

.nav-theme-item { display: none; }

/* Theme toggle button */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text);
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color var(--trans), background var(--trans);
}

.theme-toggle:hover {
  border-color: var(--border-hover);
  background: rgba(128, 128, 128, 0.08);
}

.theme-toggle .icon-moon { display: block; }
.theme-toggle .icon-sun  { display: none; }
:root[data-theme="light"] .theme-toggle .icon-moon { display: none; }
:root[data-theme="light"] .theme-toggle .icon-sun  { display: block; }

.theme-toggle-desktop {
  margin-left: 20px;
}

/* Mobile hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  z-index: 101;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease), background var(--trans);
  transform-origin: center;
}

.menu-toggle.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.menu-toggle.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ============================================================
   HERO — always dark (photo background, independent of theme)
   ============================================================ */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px var(--pad-x) 100px;
  position: relative;
  overflow: hidden;
  background-color: #0A0A0A;
  background-image: url('images/hero.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: #FFFFFF;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}

#hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom, rgba(10,10,10,0.72) 0%, rgba(10,10,10,0.55) 50%, rgba(10,10,10,0.88) 100%),
    radial-gradient(ellipse 75% 55% at 50% 0%, rgba(255,255,255,0.04) 0%, transparent 65%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: #AAAAAA;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  padding: 8px 18px;
  border-radius: 100px;
  margin-bottom: 44px;
}

#hero h1 {
  font-family: 'Times New Roman', Times, Georgia, serif;
  font-size: clamp(38px, 7.5vw, 82px);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  line-height: 1.08;
  margin-bottom: 32px;
  max-width: 1020px;
  background: linear-gradient(160deg, #ffffff 55%, rgba(255,255,255,0.55));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(16px, 2.2vw, 19px);
  color: #888888;
  font-weight: 400;
  line-height: 1.65;
  margin-bottom: 48px;
  max-width: 480px;
}

#hero .btn-primary {
  background: #FFFFFF;
  color: #0A0A0A;
}

.hero-scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}

.scroll-line {
  width: 1px;
  height: 56px;
  background: linear-gradient(to bottom, #888888, transparent);
  animation: scrollPulse 2.2s ease-in-out infinite;
  transform-origin: top;
}

/* ============================================================
   ICON GRID — "Perché ti serve"
   ============================================================ */
#perche {
  border-top: 1px solid var(--border);
}

.icon-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.icon-card {
  background: var(--bg-3);
  border: 1px solid var(--border);
  padding: 44px 40px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--trans), background var(--trans);
}

.icon-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--card-shine), transparent);
  opacity: 0;
  transition: opacity var(--trans);
}

.icon-card:hover {
  border-color: var(--border-hover);
}

.icon-card:hover::before {
  opacity: 1;
}

.icon-card-emoji {
  font-size: 32px;
  margin-bottom: 22px;
  display: block;
  line-height: 1;
}

.icon-card h3 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-bottom: 10px;
}

.icon-card p {
  font-size: 14.5px;
  color: var(--text-dim);
  line-height: 1.65;
}

/* ============================================================
   PROCESS / STEPS
   ============================================================ */
.steps-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  gap: 0;
  align-items: stretch;
}

.process-step {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 40px 30px;
  transition: border-color var(--trans), background var(--trans);
}

.process-step:hover {
  border-color: var(--border-hover);
}

.process-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
  color: var(--bg-4);
}

.step-number {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--bg-4);
  margin-bottom: 20px;
  font-variant-numeric: tabular-nums;
}

.process-step h3 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-bottom: 12px;
}

.process-step p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.65;
}

/* ============================================================
   PORTFOLIO
   ============================================================ */
#portfolio {
  border-top: 1px solid var(--border);
}

.case-study {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-bottom: 72px;
}

.case-preview {
  display: block;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #0d0d0d;
  transition: border-color var(--trans), transform var(--trans);
}

.case-preview:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
}

.case-preview-chrome {
  display: flex;
  gap: 6px;
  padding: 12px 14px;
  background: #141414;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.case-preview-chrome span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.18);
}

.case-preview-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 88px 32px;
  text-align: center;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(201,168,105,0.16) 0%, transparent 60%),
    linear-gradient(160deg, #1a1a1a 0%, #0a0a0a 70%);
}

.case-preview-title {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 26px;
  letter-spacing: 0.04em;
  color: #EFE3C8;
}

.case-preview-line {
  width: 40px;
  height: 1px;
  background: #C9A869;
}

.case-preview-sub {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #8a8a8a;
}

.case-category {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 14px;
}

.case-info h3 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.case-info p {
  font-size: 15.5px;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 26px;
  max-width: 420px;
}

.case-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid var(--border-hover);
  padding-bottom: 3px;
  transition: color var(--trans), border-color var(--trans);
}

.case-link:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.sectors-label {
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 18px;
}

.sectors-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-dim-2);
  background: var(--bg-3);
  border: 1px solid var(--border);
  padding: 9px 16px;
  border-radius: 100px;
  transition: border-color var(--trans), color var(--trans);
}

.chip:hover {
  border-color: var(--border-hover);
  color: var(--text);
}

/* ============================================================
   FORM
   ============================================================ */
.section-contact {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.form-info h2 {
  font-size: clamp(30px, 4.5vw, 46px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin: 0 0 20px;
}

.contact-subtitle {
  font-size: 15.5px;
  color: var(--text-dim);
  line-height: 1.7;
  max-width: 380px;
}

.lead-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-field label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-dim-2);
  letter-spacing: 0.01em;
}

.form-field .optional {
  font-weight: 400;
  color: var(--text-dim);
}

.form-field input {
  font-family: var(--font);
  font-size: 15px;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 14px 16px;
  transition: border-color var(--trans), box-shadow var(--trans);
}

.form-field input::placeholder {
  color: var(--text-dim);
  opacity: 0.6;
}

.form-field input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.btn-form {
  justify-content: center;
  margin-top: 6px;
  width: 100%;
}

.form-success {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 24px;
}

.form-success[hidden] {
  display: none;
}

.form-success-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-text);
  font-size: 14px;
  font-weight: 700;
}

.form-success p {
  font-size: 14.5px;
  color: var(--text-dim);
  line-height: 1.65;
}

.form-success strong {
  color: var(--text);
}

/* ============================================================
   TRUST / GUARANTEE
   ============================================================ */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
}

.trust-item {
  background: var(--bg-3);
  border: 1px solid var(--border);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: border-color var(--trans);
}

.trust-item:hover {
  border-color: var(--border-hover);
}

.trust-check {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0.12);
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}

.trust-item p {
  font-size: 14.5px;
  color: var(--text-dim-2);
  line-height: 1.55;
}

/* ============================================================
   SECOND CTA
   ============================================================ */
.section-cta {
  border-top: 1px solid var(--border);
}

.cta-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 28px;
}

.cta-inner h2 {
  font-size: clamp(28px, 4.5vw, 44px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.12;
}

.cta-note {
  font-size: 13.5px;
  color: var(--text-dim);
  margin-top: -8px;
}

/* ============================================================
   FOOTER
   ============================================================ */
#footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 48px 0;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 40px;
  text-align: left;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.footer-contacts {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.footer-contacts-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.footer-contacts a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dim-2);
  transition: color var(--trans);
}

.footer-contacts a:hover {
  color: var(--accent);
}

.footer-logo {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.footer-tagline {
  font-size: 12.5px;
  color: var(--text-dim);
  font-weight: 400;
}

.footer-copy {
  font-size: 12px;
  color: var(--bg-4);
  margin-top: 6px;
}

/* ============================================================
   RESPONSIVE — TABLET  (≤ 900px)
   ============================================================ */
@media (max-width: 900px) {
  :root {
    --pad-section: 88px 0;
  }

  .icon-grid {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .process-arrow {
    padding: 12px 0;
    transform: rotate(90deg);
  }

  .case-study {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .form-grid {
    grid-template-columns: 1fr;
    gap: 52px;
  }

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

/* ============================================================
   RESPONSIVE — MOBILE  (≤ 640px)
   ============================================================ */
@media (max-width: 640px) {
  :root {
    --pad-section: 72px 0;
    --pad-x: 20px;
  }

  /* Mobile nav */
  .menu-toggle {
    display: flex;
  }

  .theme-toggle-desktop {
    display: none;
  }

  .nav-theme-item {
    display: block;
    margin-top: 8px;
  }

  .nav-links {
    position: fixed;
    top: 0; right: -100%; bottom: 0;
    width: min(300px, 85vw);
    background: var(--bg-2);
    border-left: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 48px 36px;
    gap: 28px;
    transition: right 0.38s var(--ease);
    z-index: 99;
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links a {
    font-size: 19px;
    font-weight: 600;
    color: var(--text);
  }

  .nav-links .nav-cta {
    border: none;
    padding: 0;
    color: var(--text-dim);
    font-size: 19px;
  }

  /* Icon grid */
  .icon-card {
    padding: 32px 26px;
  }

  /* Portfolio */
  .case-preview-body {
    padding: 64px 24px;
  }

  /* Trust */
  .trust-grid {
    grid-template-columns: 1fr;
  }

  /* Section header */
  .section-header {
    margin-bottom: 44px;
  }
}

@media (max-width: 400px) {
  #hero h1 {
    font-size: 38px;
  }

  .hero-badge {
    font-size: 11px;
  }
}