/* ============================================================
   Rainbow Tree Consultancy — site styles
   One stylesheet, shared by every page.
   Colours come from the original theme: a greyscale palette
   re-tinted to a green hue (99°). Defined once, below.
   ============================================================ */

:root {
  /* Palette */
  --green-dark: hsl(99 50% 13%);   /* links, titles, footer text, buttons */
  --text:       hsl(99 40% 20%);   /* body copy */
  --muted:      hsl(99 50% 46%);   /* tagline, labels, "(required)" */
  --border:     hsl(99 50% 73%);   /* form field borders, button hover */
  --rule:       hsl(99 50% 93%);   /* hairline dividers */
  --surface:    hsl(99 50% 98%);   /* faint section background */
  --white:      #fff;

  /* Layout + type */
  --wrap:    1000px;   /* max content width */
  --gutter:  1.5rem;   /* page side padding (mobile) */
  --nav-h:   3rem;     /* approximate height of the sticky nav bar */
  --font:    "Libre Franklin", Helvetica, Arial, sans-serif;
}

/* ---- Base -------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.66;
  color: var(--text);
  background: var(--white);
}

img { max-width: 100%; height: auto; }

a { color: var(--green-dark); }
a:hover { color: var(--muted); }

/* Centres content and gives it consistent side padding.
   Used on the branding, nav, main and footer. */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---- Header / hero ---------------------------------------- */

.site-header {
  position: relative;
  display: flex;
  align-items: center;              /* inner pages: title vertically centred in the band */
  min-height: 320px;                /* inner pages: a slightly taller banner band */
  color: var(--white);
  background-color: var(--green-dark);   /* shown until the photo loads */
  background-image: url("images/cropped-homepage_image.jpg");
  background-size: cover;
  background-position: center;
}

.home .site-header {
  align-items: flex-end;                  /* home: title sits low in the hero */
  min-height: calc(100vh - var(--nav-h)); /* hero + nav ≈ one full screen */
}

/* Dark gradient so the white title stays readable over the photo */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 40%, rgba(0, 0, 0, 0.45));
}

.site-branding {
  position: relative;   /* sit above the gradient */
  z-index: 1;
  padding-block: 1.5rem;
}

.site-title {
  margin: 0;
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.site-title a { color: var(--white); text-decoration: none; }

.site-tagline {
  margin: 0.25rem 0 0;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  opacity: 0.85;
}

/* ---- Navigation (sticks to the top once scrolled past) ----- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--white);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  margin: 0;
  padding-block: 0.75rem;
  list-style: none;
}
.site-nav a {
  color: var(--green-dark);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] { color: var(--muted); }

/* Scroll down arrow */
.scroll-down-arrow {
  font-size: 1.25rem;
  color: var(--green-dark);
}

/* ---- Page banner (inner pages) ---------------------------- */

.page-banner {
  text-align: center;
  background: var(--surface);
}
.page-banner img { width: 500px; }   /* max-width:100% (base rule) keeps it responsive */

/* ---- Main content ----------------------------------------- */

.page-main { padding-block: 2.5rem; }

/* Small uppercase label title, matching the original two-column layout */
.page-title {
  margin: 0 0 0.75rem;
  color: var(--green-dark);
  font-size: 0.875rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.page-content > :first-child { margin-top: 0; }
.page-content p { margin: 0 0 1.5rem; }
.page-content strong { color: var(--green-dark); }
.page-content ul { margin: 0 0 1.5rem; padding-left: 1.2rem; }
.page-content li { margin-bottom: 0.4rem; }

/* ---- Contact details + form ------------------------------- */

.contact-details p { margin: 0 0 0.75rem; }

.contact-form .field { margin-bottom: 1.5rem; }
.contact-form label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 600;
  color: var(--green-dark);
}
.contact-form label span { color: var(--muted); font-weight: 400; }

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.5rem;
  font: inherit;
  color: var(--text);
  background: var(--white);
  border: 1px solid var(--border);   /* same green outline on every field */
}
.contact-form textarea { resize: vertical; }

.contact-button {
  padding: 0.7rem 1.6rem;
  font: inherit;
  font-weight: 600;
  color: var(--white);
  background: var(--green-dark);
  border: 0;
  cursor: pointer;
  transition: background 0.15s ease;
}
.contact-button:hover { background: var(--border); }   /* light green on hover */

/* ---- Footer ----------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--rule);
  padding-block: 2.5rem;
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;   /* logos centred */
  gap: 2rem;
}
.footer-mark     { width: 130px; }
.footer-wordmark { width: 530px; }

/* ---- Wider screens ---------------------------------------- */

@media (min-width: 48em) {
  :root { --gutter: 3rem; }

  .site-title   { font-size: 2.25rem; }
  .site-tagline { font-size: 1rem; }

  .page-main { padding-block: 4rem; }

  /* Two columns: title on the left, content on the right */
  .page-layout {
    display: grid;
    grid-template-columns: 36% 1fr;
    column-gap: 6%;
  }
}