body { line-height: 1.5; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  color: var(--color-accent);
  text-transform: uppercase;
  margin: 0 0 1rem;
}

h1 { font-size: 1.875rem; font-weight: 500; }
h2 { font-size: 1.5rem; line-height: 1.3333; font-weight: 400; margin-top: 2rem; }
h3 { font-size: 1rem; font-weight: 400; line-height: inherit; }
ul, ol { list-style: none; margin: 0; padding: 0; }
blockquote { margin: 0; }
p { margin: 0 0 1.5rem; }

main.content { margin: 0 auto 4rem; padding: 2rem 1rem 1rem; }

/* header and footer */
.site-header {
  max-width: none;
  margin: 0;
  padding: 0.5rem max(0.5rem, calc((100% - var(--content-width)) / 2));
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--color-grey);
  justify-content: space-between;
}

.site-name { padding: 0; }
.site-name img { display: block; height: 2.5rem; width: auto; }

.site-header nav li {
  list-style: none;
  text-transform: uppercase;
  font-weight: 500;
}

.site-header nav a, .site-footer a { color: var(--color-accent); text-decoration: none; }
.site-header nav a:hover, .site-footer a:hover { color: var(--color-hover); }

.site-footer {
  max-width: none;
  margin: 0;
  padding: 1rem max(1rem, calc((100% - var(--content-width)) / 2 + 1rem));
  background: var(--color-grey);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.site-footer .social { flex: 1; }
.site-footer .legal { flex-shrink: 0; text-align: right; }
.site-footer li { display: inline-block; margin-left: 1rem; }

main a { color: inherit; text-decoration: inherit; }
.site-footer .legal p { font-size: 0.75rem; line-height: 2; color: var(--color-muted); }
.site-footer a[title="Facebook"], .site-footer a[title="LinkedIn"] { font-size: 0; }
.site-footer a[title="Facebook"]::before, .site-footer a[title="LinkedIn"]::before {
  content: "";
  display: inline-block;
  width: 28px;
  height: 28px;
  background: no-repeat center / 28px;
}
.site-footer a[title="Facebook"]::before { background-image: url(/assets/tutor-facebook.svg); }
.site-footer a[title="LinkedIn"]::before { background-image: url(/assets/tutor-linkedin.svg); }

/* Stage */
.stage {
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}
.stage-text { width: 100%; padding: 1rem 1rem 1rem 0; }
.stage img { padding: 2rem; }
@media (min-width: 768px) {
  .stage { flex-direction: row; }
  .stage-text { width: 50%; }
}

/* capex cards */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.5rem; }
@media (min-width: 768px) { .cards { grid-template-columns: repeat(4, 1fr); gap: 1rem; } }

/* table */
table { border-collapse: collapse; }
th, td { text-align: left; padding: 0.25rem 1rem 0.25rem 0; }

/* contact form */
.form { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.form label { width: 100%; }
@media (min-width: 768px) { .form label { width: calc(50% - 0.25rem); } }
.form label.full { width: 100%; }
.form input, .form textarea {
  width: 100%;
  font: inherit;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-accent);
  border-radius: 4px;
}
.form input:focus, .form textarea:focus { outline: none; border-color: var(--color-hover); }
.form input:user-invalid, .form textarea:user-invalid { border-color: var(--color-error); }
.form button {
  margin: 1rem 0;
  border: 0;
  padding: 0;
  background: none;
  font: inherit;
  font-size: 1.25rem;
  line-height: 1.4;
  font-weight: 500;
  color: var(--color-accent);
  cursor: pointer;
}
.form button:hover { color: var(--color-hover); }
.checkbox { position: relative; display: block; padding-left: 2.5rem; cursor: pointer; font-weight: 400; }
.checkbox input { display: none; }
.checkbox i {
  position: absolute; top: 0; left: 0;
  width: 1.5rem; height: 1.5rem;
  border: 1px solid var(--color-accent);
  border-radius: 6px;
}
.checkbox input:checked ~ i { background: var(--color-accent); }
.checkbox input:checked ~ i::after {
  content: "";
  position: absolute; top: 3px; left: 7px;
  width: 6px; height: 12px;
  border: solid #fff; border-width: 0 3px 3px 0;
  transform: rotate(45deg);
}

/* hamburger menu (below 768px; above it the links sit in the header) */
.nav-toggle, .hamburger { display: none; }

@media (max-width: 767.98px) {
  .site-header nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0;
    pointer-events: none;
  }

  .site-header nav ul {
    display: flex;
    flex-direction: column;
    gap: 0;
    width: 100%;
    height: 0;
    margin-top: 52px;
    overflow: hidden;
    background: #fff;
    text-align: right;
    transition: height 0.3s ease-in-out;
    pointer-events: auto;
  }

  .site-header nav li { margin-left: 1rem; padding: 0.5rem 1rem 0; }

  .nav-toggle:checked ~ ul { height: 100%; }

  .nav-toggle {
    display: block;
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 1;
    width: 38px;
    height: 38px;
    margin: 0;
    opacity: 0;
    appearance: none;
    cursor: pointer;
    pointer-events: auto;
  }

  .nav-toggle:focus-visible + .hamburger { outline: 2px solid var(--color-accent); }

  .hamburger {
    display: block;
    position: absolute;
    top: 8px;
    right: 8px;
    width: 38px;
    height: 38px;
    pointer-events: none;
  }

  .hamburger span {
    position: absolute;
    right: 0;
    height: 0;
    border-bottom: 1px solid var(--color-accent);
    transform-origin: right;
    transition: all 0.3s cubic-bezier(0.215, 0.61, 0.355, 1), opacity 0.2s cubic-bezier(0.645, 0.045, 0.355, 1) 0.1s;
  }

  .hamburger span:nth-child(1) { top: 12px; width: 38px; }
  .hamburger span:nth-child(2) { top: 19px; width: 19px; }
  .hamburger span:nth-child(3) { top: 26px; width: 28.5px; }

  .nav-toggle:hover + .hamburger span { width: 38px; }

  .nav-toggle:checked + .hamburger span:nth-child(1),
  .nav-toggle:checked + .hamburger span:nth-child(3) {
    top: 18px;
    right: 0;
    width: 38px;
    transform-origin: center;
  }
  .nav-toggle:checked + .hamburger span:nth-child(3) { right: -1px; }
  .nav-toggle:checked + .hamburger span:nth-child(1) { transform: rotate(45deg); }
  .nav-toggle:checked + .hamburger span:nth-child(3) { transform: rotate(-45deg); }
  .nav-toggle:checked + .hamburger span:nth-child(2) { display: none; }
}