/* =========================
   layout.css
   - container
   - grid / spacing globali
   - componenti globali (card, btn, badge)
   - main/footer
   ========================= */

.app {
  position: relative;
  z-index: 1;
  min-height: 100%;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.container {
  width: min(var(--container), calc(100% - 32px));
  margin-inline: auto;
}

.stack {
  display: grid;
  gap: 16px;
}

.grid {
  display: grid;
  gap: 14px;
}

@media (min-width: 700px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 980px) {
  .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* Reusable surfaces */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);

  transition: background-color 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.card__inner {
  padding: 18px;
}

.muted {
  color: var(--muted);
}

.hr {
  height: 1px;
  background: var(--border);
  border: 0;
  margin: 0;
}

/* Main */
.site-main {
  padding: 18px 0 40px;
  outline: none;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--muted);
  font-weight: 700;
  font-size: 0.9rem;
  width: fit-content;

  transition: background-color 220ms ease, border-color 220ms ease;
}

/* Buttons */
.btn {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px 14px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;

  background: var(--btn-bg);
  color: var(--btn-text);

  transition:
    transform 160ms ease,
    filter 160ms ease,
    box-shadow 160ms ease,
    background-color 220ms ease,
    border-color 220ms ease,
    color 220ms ease;
}

.btn:hover {
  filter: brightness(0.98);
  transform: translateY(-1px);
}

.btn:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.25);
  outline-offset: 2px;
}

.btn--primary {
  background: linear-gradient(135deg, var(--primary-600), var(--accent));
  color: white;
  border-color: rgba(29, 78, 216, 0.25);
  box-shadow: 0 12px 26px rgba(37, 99, 235, 0.18);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--footer-bg);
  backdrop-filter: blur(10px);

  transition: background-color 220ms ease, border-color 220ms ease;
}

.footer {
  padding: 32px 0 20px;
  display: grid;
  gap: 20px;
}

.footer a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
}

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

.footer__main {
  display: grid;
  gap: 28px;
}

.footer__brand {
  max-width: 28rem;
  display: grid;
  gap: 10px;
}

.footer__title {
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.footer__text {
  margin: 0;
  max-width: 34ch;
  line-height: 1.65;
}

.footer__grid {
  display: grid;
  gap: 20px 28px;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.footer__col {
  display: grid;
  align-content: start;
  gap: 12px;
  min-width: 0;
}

.footer__heading {
  margin: 0;
  color: var(--text);
  font-size: 0.96rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.footer__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.footer__listItem {
  margin: 0;
  padding: 0;
}

.footer__link {
  display: inline-block;
  line-height: 1.5;
}

.footer__divider {
  height: 1px;
  background: var(--border);
}

.footer__bottom {
  display: grid;
  gap: 10px 18px;
  align-items: start;
}

.footer__copyright {
  font-size: 0.94rem;
  font-weight: 600;
}

.footer__note {
  font-size: 0.94rem;
  line-height: 1.6;
  max-width: 64rem;
}

@media (min-width: 760px) {
  .footer {
    padding: 36px 0 22px;
    gap: 24px;
  }

  .footer__main {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: start;
    gap: 40px;
  }

  .footer__grid {
    grid-template-columns: repeat(2, minmax(160px, 1fr));
    justify-items: start;
  }

  .footer__bottom {
    grid-template-columns: auto minmax(0, 1fr);
  }
}