/* ===================================================
   KEXAR.IT — Main CSS
   Design system: dark AI, Space Grotesk + Inter
   =================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@700&family=Inter:wght@400;500&family=JetBrains+Mono:wght@400;500&display=swap');
@import url('animations.css');

/* --- Variabili colore --- */
:root {
  --purple-50:  #EEEDFE;
  --purple-400: #7F77DD;
  --purple-600: #534AB7;
  --purple-800: #3C3489;
  --amber-100:  #FAC775;
  --amber-600:  #BA7517;
  --teal-400:   #1D9E75;
  --bg-primary: #06091A;
  --bg-surface: #0D1230;
  --bg-card:    #111630;
  --text-1:     #F0EEF9;
  --text-2:     #8B8FA8;
  --text-3:     #4A4F6A;
  --border:     rgba(255,255,255,0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-1);
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, canvas {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

/* --- Utilità layout --- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 40px;
}

.section {
  padding: 80px 40px;
  max-width: 1100px;
  margin: 0 auto;
}

/* --- Tipografia --- */
h1, h2, h3, h4 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-1);
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.2rem; }

p { color: var(--text-2); }

.mono {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

/* === NAVIGAZIONE === */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6,9,26,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 40px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--text-1);
}

.nav__logo span {
  color: var(--purple-400);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav__links a {
  font-size: 0.9rem;
  color: var(--text-2);
  transition: color 0.2s;
}

.nav__links a:hover {
  color: var(--text-1);
}

.nav__cta {
  background: var(--purple-600);
  color: var(--text-1) !important;
  padding: 8px 20px;
  border-radius: 6px;
  font-weight: 500;
  transition: background 0.2s !important;
}

.nav__cta:hover {
  background: var(--purple-400) !important;
  color: var(--text-1) !important;
}

/* hamburger mobile */
.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.nav__burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-1);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* === HERO === */
.hero {
  padding: 100px 40px 80px;
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero__tag {
  display: inline-block;
  color: var(--teal-400);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}

.hero__title {
  margin-bottom: 20px;
}

.hero__title em {
  font-style: normal;
  color: var(--purple-400);
}

.hero__subtitle {
  font-size: 1.05rem;
  color: var(--text-2);
  margin-bottom: 36px;
  max-width: 460px;
}

.hero__ctas {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero__canvas-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
}

#agentCanvas {
  width: 100%;
  max-width: 360px;
  height: auto;
  border-radius: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
}

/* === PULSANTI === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: transform 0.15s, box-shadow 0.15s, background 0.2s;
  text-decoration: none;
}

.btn:active {
  transform: scale(0.97);
}

.btn--primary {
  background: var(--purple-600);
  color: var(--text-1);
  box-shadow: 0 4px 20px rgba(83,74,183,0.35);
}

.btn--primary:hover {
  background: var(--purple-400);
  box-shadow: 0 6px 28px rgba(127,119,221,0.45);
}

.btn--outline {
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--border);
}

.btn--outline:hover {
  color: var(--text-1);
  border-color: var(--purple-400);
}

/* === STATS BAR === */
.stats {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 36px 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat {
  text-align: center;
  padding: 16px 8px;
}

.stat__value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--purple-400);
  line-height: 1;
  margin-bottom: 6px;
}

.stat__label {
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.4;
}

/* === SERVIZI === */
.services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px;
  transition: border-color 0.25s, transform 0.25s;
}

.card:hover {
  border-color: var(--purple-600);
  transform: translateY(-3px);
}

.card__icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(83,74,183,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.3rem;
}

.card__title {
  margin-bottom: 10px;
}

.card__text {
  font-size: 0.9rem;
}

/* === COME LAVORIAMO === */
.how__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.how-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px;
  text-align: center;
}

.how-card__badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  font-weight: 500;
  margin-bottom: 18px;
  letter-spacing: 0.04em;
}

.badge--amber {
  background: rgba(186,117,23,0.18);
  color: var(--amber-100);
  border: 1px solid rgba(186,117,23,0.3);
}

.badge--purple {
  background: rgba(83,74,183,0.18);
  color: var(--purple-400);
  border: 1px solid rgba(83,74,183,0.3);
}

.how-card__role {
  margin-bottom: 10px;
}

.how-card__desc {
  font-size: 0.9rem;
}

/* === AI NEWS === */
.news__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 48px;
  flex-wrap: wrap;
  gap: 16px;
}

.news__badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-2);
}

.news__badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal-400);
  animation: pulse-dot 2s infinite;
}

.news__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.25s, transform 0.25s;
  cursor: pointer;
}

.news-card:hover {
  border-color: var(--purple-600);
  transform: translateY(-3px);
}

.news-card__tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--purple-400);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.news-card__title {
  font-size: 1rem;
  line-height: 1.4;
}

.news-card__preview {
  font-size: 0.85rem;
  color: var(--text-2);
  flex: 1;
}

.news-card__date {
  font-size: 0.75rem;
  color: var(--text-3);
  font-family: 'JetBrains Mono', monospace;
}

/* Skeleton placeholder news */
.news-card--skeleton .news-card__tag,
.news-card--skeleton .news-card__title,
.news-card--skeleton .news-card__preview,
.news-card--skeleton .news-card__date {
  background: var(--bg-surface);
  border-radius: 4px;
  color: transparent;
  animation: skeleton-pulse 1.6s ease-in-out infinite;
}

.news-card--skeleton .news-card__tag { width: 60px; height: 12px; }
.news-card--skeleton .news-card__title { height: 20px; }
.news-card--skeleton .news-card__preview { height: 60px; }
.news-card--skeleton .news-card__date { width: 80px; height: 11px; }

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

.contact__inner {
  max-width: 680px;
  margin: 0 auto;
  padding: 80px 40px;
}

.contact__subtitle {
  margin-bottom: 40px;
  margin-top: 12px;
}

.form__group {
  margin-bottom: 20px;
}

.form__label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-2);
  margin-bottom: 6px;
  font-family: 'JetBrains Mono', monospace;
}

.form__input,
.form__textarea {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--text-1);
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form__input:focus,
.form__textarea:focus {
  border-color: var(--purple-600);
  box-shadow: 0 0 0 3px rgba(83,74,183,0.18);
}

.form__input.error,
.form__textarea.error {
  border-color: #e05050;
}

.form__textarea {
  resize: vertical;
  min-height: 120px;
}

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

.form__submit {
  width: 100%;
  justify-content: center;
  margin-top: 8px;
  font-size: 1rem;
  padding: 14px;
}

.form__feedback {
  margin-top: 20px;
  padding: 16px 20px;
  border-radius: 8px;
  font-size: 0.9rem;
  display: none;
}

.form__feedback--success {
  background: rgba(29,158,117,0.12);
  border: 1px solid rgba(29,158,117,0.3);
  color: #5dd9a8;
}

.form__feedback--error {
  background: rgba(224,80,80,0.1);
  border: 1px solid rgba(224,80,80,0.25);
  color: #f08080;
}

.form__feedback--visible {
  display: block;
}

.form__ai-reply {
  margin-top: 12px;
  padding: 14px 18px;
  background: rgba(83,74,183,0.08);
  border: 1px solid rgba(83,74,183,0.2);
  border-radius: 8px;
  font-size: 0.88rem;
  color: var(--text-2);
  font-style: italic;
}

/* === FOOTER === */
.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-primary);
}

.footer__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer__logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
}

.footer__logo span {
  color: var(--purple-400);
}

.footer__status {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--teal-400);
  margin-top: 4px;
}

.footer__copy {
  font-size: 0.8rem;
  color: var(--text-3);
}

/* === SEZIONI GENERALI === */
.section__tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--purple-400);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section__title {
  margin-bottom: 12px;
}

.section__subtitle {
  font-size: 1.05rem;
  color: var(--text-2);
  max-width: 560px;
}

/* === MODAL ARTICOLO === */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(6,9,26,0.85);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}

.modal-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  max-width: 640px;
  width: 100%;
  padding: 40px;
  max-height: 80vh;
  overflow-y: auto;
  transform: translateY(20px);
  transition: transform 0.25s;
}

.modal-overlay.visible .modal {
  transform: translateY(0);
}

.modal__close {
  float: right;
  background: none;
  border: none;
  color: var(--text-2);
  font-size: 1.4rem;
  cursor: pointer;
  line-height: 1;
  padding: 0 0 8px 8px;
}

.modal__tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--purple-400);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

.modal__title {
  margin-bottom: 16px;
}

.modal__date {
  font-size: 0.75rem;
  color: var(--text-3);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 20px;
}

.modal__content {
  font-size: 0.95rem;
  color: var(--text-2);
  line-height: 1.7;
}

/* === RESPONSIVE MOBILE === */
@media (max-width: 768px) {
  .container,
  .section {
    padding-left: 20px;
    padding-right: 20px;
  }

  .nav__inner {
    padding: 0 20px;
  }

  .nav__links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 20px;
    gap: 20px;
  }

  .nav__links.open {
    display: flex;
  }

  .nav__burger {
    display: flex;
  }

  .hero {
    grid-template-columns: 1fr;
    padding: 60px 20px 60px;
    gap: 40px;
    text-align: center;
  }

  .hero__subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__ctas {
    justify-content: center;
  }

  #agentCanvas {
    max-width: 300px;
    margin: 0 auto;
  }

  .stats__inner {
    grid-template-columns: repeat(2, 1fr);
    padding: 28px 20px;
  }

  .services__grid,
  .how__grid,
  .news__grid {
    grid-template-columns: 1fr;
  }

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

  .contact__inner {
    padding: 60px 20px;
  }

  .footer__inner {
    padding: 32px 20px;
    flex-direction: column;
    align-items: flex-start;
  }

  .section {
    padding: 60px 20px;
  }
}