/* ============================================================
   SILURA SYSTEMS — style.css
   Adjust the variables in :root to retheme the entire site.
   ============================================================ */

:root {
  /* --- Colours ------------------------------------------- */
  --color-bg:           #b8d4df;                 /* Page background: coastal light blue (matches siluragroup) */
  --color-gold:         #c7954a;                 /* Accent / hover */
  --color-text-dim:     rgba(7,23,34,0.55);      /* Footer / muted text */
  --color-border:       rgba(7,23,34,0.18);      /* Divider lines */

  /* --- Typography ----------------------------------------- */
  --font-family:        'Inter', Helvetica, Arial, sans-serif;
  --weight-light:       300;
  --weight-normal:      400;
}

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

/* Lock entire page to viewport — no scroll */
html, body {
  height: 100dvh;
  overflow: hidden;
}

body {
  background-color: var(--color-bg);
  font-family: var(--font-family);
  display: flex;
  flex-direction: column;
}

/* ============================================================
   TOP BAR — brand title only
   ============================================================ */

.topbar {
  flex-shrink: 0;
  padding: 16px clamp(20px, 4vw, 48px);
  border-bottom: 1px solid var(--color-border);
}

/* "silura SYSTEMS" — matches siluragroup wordmark style, scaled for header */
.topbar__title {
  font-size: clamp(15px, 1.8vw, 22px);
  font-weight: var(--weight-light);
  letter-spacing: -0.02em;
  color: #071722;
}

.topbar__systems {
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* ============================================================
   HERO IMAGE — fills all space between topbar and footer
   ============================================================ */

.hero {
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px clamp(24px, 6vw, 80px) 24px;
}

.hero__img {
  display: block;
  width: min(100%, 960px);
  height: auto;
  max-height: 100%;
  object-fit: contain;
}

/* ============================================================
   FOOTER — mirrors siluragroup style, adapted for dark background
   ============================================================ */

.footer {
  flex-shrink: 0;
  padding: clamp(12px, 1.8vh, 22px) clamp(20px, 4vw, 48px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: clamp(10px, 1vw, 12px);
  font-weight: var(--weight-normal);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-dim);
}

.footer__email {
  color: var(--color-text-dim);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer__email:hover,
.footer__email:focus-visible {
  color: var(--color-gold);
  outline: none;
}

.footer__copy {
  color: var(--color-text-dim);
}

/* ============================================================
   RESPONSIVE — Mobile (≤480px)
   ============================================================ */

@media (max-width: 480px) {
  .topbar {
    padding: 14px 16px;
  }

  .hero {
    padding: 16px 16px 16px;
  }

  .footer {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }
}