/* ========================================================
   ITERUM — LEGAL INTELLIGENCE
   Premium Legal AI Landing — Shared Stylesheet
   ======================================================== */

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

:root {
  --bg: #F7F4EF;
  --text: #1A1208;
  --red: #C41E3A;
  --gray: #6B6560;
  --line: #D4C9BC;
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Libre Baskerville', Georgia, serif;
  --font-label: 'Montserrat', Helvetica, Arial, sans-serif;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.75;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

::selection {
  background: var(--red);
  color: #fff;
}

/* --- Typography --- */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text);
}

h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }

p {
  max-width: 680px;
  color: var(--gray);
  font-size: 1rem;
  line-height: 1.85;
}

.label {
  font-family: var(--font-label);
  font-weight: 300;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--gray);
}

.accent-letter {
  color: var(--red);
  font-style: inherit;
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 2.5rem;
}

section {
  padding: 6rem 0;
}

/* --- Navbar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-decoration: none;
}

.logo-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.55rem;
  letter-spacing: 0.08em;
  color: var(--text);
  line-height: 1;
}

.logo-text .accent-letter {
  font-size: 1.1em;
}

.logo-sub {
  font-family: var(--font-label);
  font-weight: 300;
  font-size: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--gray);
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-label);
  font-weight: 300;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--gray);
  transition: color 0.3s ease;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--red);
  transition: width 0.3s ease;
}

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

.nav-links a:hover::after {
  width: 100%;
}

/* Mobile hamburger */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  transition: all 0.3s ease;
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 72px;
}

.hero-bg-letter {
  position: absolute;
  top: 50%;
  right: 8%;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28rem, 50vw, 55rem);
  line-height: 1;
  color: var(--red);
  opacity: 0;
  pointer-events: none;
  user-select: none;
  animation: fadeInLetter 1.5s 0.3s ease-out forwards;
}

@keyframes fadeInLetter {
  to { opacity: 0.06; }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s 0.5s ease-out forwards;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero h1 {
  margin-bottom: 1.8rem;
  font-style: italic;
  font-weight: 600;
}

.hero p {
  font-size: 1.05rem;
  margin-bottom: 2.5rem;
  line-height: 1.9;
}

.hero-cta {
  font-family: var(--font-label);
  font-weight: 300;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--red);
  border-bottom: 1px solid var(--red);
  padding-bottom: 3px;
  transition: opacity 0.3s ease;
}

.hero-cta:hover {
  opacity: 0.7;
}

/* --- Sections --- */
.section-divider {
  width: 60px;
  height: 1px;
  background: var(--line);
  margin-bottom: 2.5rem;
}

section h2 {
  margin-bottom: 1.8rem;
}

section p + p {
  margin-top: 1.2rem;
}

/* Cosa sta cambiando */
.section-text {
  max-width: 680px;
}

.section-text p {
  margin-bottom: 1.2rem;
}

/* Come lavora — 3 columns */
.columns-header {
  margin-bottom: 3.5rem;
}

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

.column h3 {
  margin-bottom: 1rem;
  font-style: italic;
}

.column p {
  font-size: 0.95rem;
  line-height: 1.8;
}

.column-number {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.5rem;
  color: var(--line);
  line-height: 1;
  margin-bottom: 1rem;
}

/* Per chi */
.per-chi-text {
  max-width: 640px;
}

.per-chi-text p {
  margin-bottom: 1.2rem;
}

.per-chi-cta {
  font-family: var(--font-label);
  font-weight: 400;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text);
  margin-top: 2rem;
  display: inline-block;
}

/* --- Waitlist / Contact Form --- */
.form-section {
  background: #F2EDE6;
}

.form-section .container {
  max-width: 640px;
}

.form-section h2 {
  margin-bottom: 0.8rem;
}

.form-section .form-subtitle {
  margin-bottom: 3rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-family: var(--font-label);
  font-weight: 300;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--gray);
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 0.85rem 1rem;
  outline: none;
  transition: border-color 0.3s ease;
  -webkit-appearance: none;
  appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--red);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236B6560' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-submit {
  margin-top: 2rem;
}

.btn-submit {
  font-family: var(--font-label);
  font-weight: 400;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: #fff;
  background: var(--text);
  border: none;
  padding: 1rem 2.8rem;
  cursor: pointer;
  transition: background 0.3s ease;
}

.btn-submit:hover {
  background: var(--red);
}

.form-privacy {
  font-size: 0.78rem;
  color: var(--gray);
  margin-top: 1.5rem;
  font-style: italic;
}

.form-success {
  display: none;
  text-align: center;
  padding: 3rem 0;
}

.form-success h3 {
  font-family: var(--font-display);
  font-style: italic;
  margin-bottom: 0.8rem;
}

.form-success p {
  margin: 0 auto;
}

/* --- Footer --- */
.footer {
  margin-top: auto;
  border-top: 1px solid var(--line);
  padding: 3rem 0;
  text-align: center;
}

.footer-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.08em;
  color: var(--text);
  margin-bottom: 0.2rem;
}

.footer-logo .accent-letter {
  font-size: 1.1em;
}

.footer-tagline {
  font-family: var(--font-label);
  font-weight: 300;
  font-size: 0.55rem;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--gray);
  margin-bottom: 1.2rem;
}

.footer-contact {
  font-size: 0.82rem;
  color: var(--gray);
  margin-bottom: 0.6rem;
}

.footer-contact a {
  transition: color 0.3s ease;
}

.footer-contact a:hover {
  color: var(--red);
}

.footer-links {
  font-size: 0.78rem;
  color: var(--gray);
  margin-bottom: 0.6rem;
}

.footer-links a {
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--red);
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--gray);
  opacity: 0.7;
}

/* --- Scroll Reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- About Page --- */
.page-header {
  padding-top: calc(72px + 6rem);
  padding-bottom: 4rem;
}

.page-header h1 {
  font-style: italic;
  margin-bottom: 2rem;
}

.about-text {
  max-width: 680px;
}

.about-text p {
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
  line-height: 1.9;
}

/* --- Contact Page --- */
.contact-section {
  padding-top: calc(72px + 6rem);
  padding-bottom: 6rem;
}

.contact-section .container {
  max-width: 640px;
}

.contact-section h1 {
  font-style: italic;
  margin-bottom: 0.8rem;
}

.contact-section .form-subtitle {
  margin-bottom: 3rem;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .container {
    padding: 0 1.5rem;
  }

  section {
    padding: 4rem 0;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    gap: 0;
    padding: 1rem 0;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links li {
    width: 100%;
    text-align: center;
  }

  .nav-links a {
    display: block;
    padding: 0.8rem 1.5rem;
  }

  .nav-links a::after {
    display: none;
  }

  .hero {
    min-height: auto;
    padding-top: calc(72px + 3rem);
    padding-bottom: 4rem;
  }

  .hero-bg-letter {
    font-size: 18rem;
    right: -5%;
  }

  .columns {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

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

  .page-header {
    padding-top: calc(72px + 3rem);
    padding-bottom: 3rem;
  }

  .contact-section {
    padding-top: calc(72px + 3rem);
  }
}

@media (max-width: 480px) {
  .hero-bg-letter {
    font-size: 12rem;
  }

  h1 {
    font-size: 2rem;
  }
}