/* =============================================
   Colour tokens
   ============================================= */

:root {
  --color-ground:    #F7F3EE;
  --color-text-h:    #1C1714;
  --color-text-body: #3D3530;
  --color-accent-1:  #C4522A;
  --color-accent-2:  #C4956A;
  --color-muted:     #8B7355;
  --color-blue:      #4A7C8E;
}

/* =============================================
   Reset
   ============================================= */

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  font-size: 16px;           /* rem base */
  scroll-padding-top: 72px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-ground);
  color: var(--color-text-body);
  font-family: 'Work Sans', sans-serif;
  padding-top: 56px;         /* fixed nav height */
  padding-bottom: 120px;
}

/* =============================================
   Navigation
   ============================================= */

#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 56px;
  background-color: var(--color-ground);
  border-bottom: 1px solid var(--color-accent-2);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-left: 120px;
  padding-right: 32px;
}

.nav-brand {
  font-family: 'Work Sans', sans-serif;
  font-size: 0.8125rem;      /* 13px */
  font-weight: 300;
  line-height: 1.0;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted);
  text-decoration: none;
  white-space: nowrap;
}

.nav-links {
  font-family: 'Work Sans', sans-serif;
  font-size: 0.8125rem;      /* 13px */
  font-weight: 300;
  line-height: 1.0;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted);
  white-space: nowrap;
}

.nav-links a {
  color: var(--color-muted);
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--color-accent-1);
}

.nav-sep {
  margin: 0 8px;
}

/* =============================================
   Content column — left-anchored
   ============================================= */

.content {
  margin-left: 120px;
  max-width: 820px;
  padding-right: 32px;
  margin-top: 96px;
}

/* =============================================
   Anchor arrival animation
   ============================================= */

@keyframes section-arrive {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0);   }
}

.content:target {
  animation: section-arrive 1.2s cubic-bezier(0.16, 1, 0.3, 1) both;
}

/* Hero: no top margin, top padding for breathing room */
#hero {
  margin-top: 0;
  padding-top: 120px;
}

/* Sections immediately following a divider need no top margin */
hr + .content {
  margin-top: 0;
}

/* =============================================
   Divider — short 80px rule
   ============================================= */

hr {
  border: none;
  border-top: 1px solid var(--color-accent-2);
  margin: 64px 0 64px 120px;
  width: 80px;
}

/* =============================================
   Typography
   ============================================= */

/* H1: name */
h1 {
  font-family: 'Playfair Display', serif;
  font-size: 4rem;           /* 64px */
  font-weight: 700;
  line-height: 1.0;
  color: var(--color-accent-1);
  margin-bottom: 12px;
}

/* Tagline — directly below H1 */
.tagline {
  font-family: 'Playfair Display', serif;
  font-size: 1.75rem;        /* 28px */
  font-weight: 400;
  font-style: italic;
  line-height: 1.3;
  color: var(--color-text-h);
  margin-bottom: 0;
}

/* H2: section headings */
h2 {
  font-family: 'Playfair Display', serif;
  font-size: 2.25rem;        /* 36px */
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-accent-1);
  margin-bottom: 24px;
}

/* H3: case study names */
h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.75rem;        /* 28px */
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-h);
  margin-bottom: 24px;
}

/* Label */
.label {
  font-family: 'Work Sans', sans-serif;
  font-size: 0.6875rem;      /* 11px */
  font-weight: 500;
  line-height: 1.0;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-blue);
  margin-bottom: 12px;
}

/* Body */
p {
  font-family: 'Work Sans', sans-serif;
  font-size: 1.125rem;       /* 18px */
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-text-body);
  margin-bottom: 28px;
}

/* Pull quote */
blockquote {
  border-left: 3px solid var(--color-blue);
  padding-left: 28px;
  margin: 48px 0;
  max-width: 680px;
  font-family: 'Playfair Display', serif;
  font-size: 1.625rem;       /* 26px */
  font-weight: 400;
  font-style: italic;
  line-height: 1.45;
  color: var(--color-text-h);
}

/* =============================================
   Services
   ============================================= */

.services-list {
  margin-top: 0;
}

.service {
  margin-bottom: 36px;
}

.service:last-child {
  margin-bottom: 0;
}

.service-title {
  font-family: 'Work Sans', sans-serif;
  font-size: 1.0625rem;      /* 17px */
  font-weight: 500;
  line-height: 1.3;
  color: var(--color-text-h);
  margin-bottom: 6px;
}

.service-body {
  font-family: 'Work Sans', sans-serif;
  font-size: 1.0625rem;      /* 17px */
  font-weight: 300;
  line-height: 1.65;
  color: var(--color-text-body);
  margin-bottom: 0;
}

/* =============================================
   Contact
   ============================================= */

.contact-details {
  font-family: 'Work Sans', sans-serif;
  font-size: 1.0625rem;      /* 17px */
  font-weight: 300;
  line-height: 1.8;
  color: var(--color-text-body);
  margin-top: 28px;
}

.contact-details a {
  color: var(--color-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.contact-details a:hover {
  color: var(--color-accent-1);
}

/* =============================================
   Responsive — tablet (≤ 768px)
   ============================================= */

@media (max-width: 768px) {

  #nav {
    padding-left: 32px;
    padding-right: 32px;
  }

  .content {
    margin-left: 0;
    max-width: 100%;
    padding-left: 32px;
    padding-right: 32px;
    margin-top: 48px;
  }

  #hero {
    padding-top: 48px;
  }

  hr {
    margin: 32px 0 32px 32px;
  }

  h1         { font-size: 2.75rem; }     /* 44px */
  .tagline   { font-size: 1.375rem; }    /* 22px */
  h2         { font-size: 1.75rem; }     /* 28px */
  h3         { font-size: 1.375rem; }    /* 22px */
  blockquote { font-size: 1.25rem; }     /* 20px */
  p          { font-size: 1rem; }        /* 16px */

  .service-title,
  .service-body,
  .contact-details { font-size: 1rem; }  /* 16px */

}

/* =============================================
   Responsive — mobile (≤ 480px)
   ============================================= */

@media (max-width: 480px) {

  #nav {
    padding-left: 20px;
    padding-right: 20px;
  }

  .nav-links { letter-spacing: 0.05em; }

  .content {
    padding-left: 20px;
    padding-right: 20px;
    margin-top: 32px;
  }

  #hero {
    padding-top: 36px;
  }

  hr {
    margin: 24px 0 24px 20px;
  }

  h1         { font-size: 2.25rem; }     /* 36px */
  .tagline   { font-size: 1.25rem; }     /* 20px */
  h2         { font-size: 1.5rem; }      /* 24px */
  h3         { font-size: 1.25rem; }     /* 20px */
  blockquote { font-size: 1.125rem; }    /* 18px */

}