/* =============================================
   Sydney Murphy — Global Styles
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,700;1,400&display=swap');

:root {
  --bg:           #0d0d0d;
  --bg-secondary: #141414;
  --bg-card:      #1a1a1a;
  --text:         #f0f0f0;
  --text-muted:   #888888;
  --accent:       #c9a84c;
  --accent-light: #e8c96a;
  --border:       #2a2a2a;
  --nav-height:   70px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
img { max-width: 100%; display: block; }

/* =============================================
   NAV
   ============================================= */

nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: rgba(13,13,13,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  display: flex;
  align-items: center;
  padding: 0 2.5rem;
  justify-content: space-between;
}

.nav-logo {
  font-family: 'Playfair Display', serif;
  font-size: 1.25rem;
  letter-spacing: 0.04em;
  color: var(--text);
}
.nav-logo:hover { color: var(--accent); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links {
  display: flex;
  gap: 1.75rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--text); }

.nav-social {
  display: flex;
  gap: 0.9rem;
  align-items: center;
}
.nav-social a {
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: color 0.2s;
}
.nav-social a:hover { color: var(--accent); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0; right: 0;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 2.5rem;
  z-index: 999;
  flex-direction: column;
  gap: 1rem;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0.4rem 0;
}
.mobile-menu a:hover { color: var(--text); }
.mobile-social {
  display: flex;
  gap: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  margin-top: 0.25rem;
}
.mobile-social a { color: var(--text-muted); font-size: 1rem; }
.mobile-social a:hover { color: var(--accent); }

/* =============================================
   HERO (home)
   ============================================= */

.hero {
  margin-top: var(--nav-height);
  position: relative;
  height: calc(100vh - var(--nav-height));
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('images/hero.jpg');
  background-size: cover;
  background-position: center top;
  opacity: 0.45;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(13,13,13,0.2) 0%, rgba(13,13,13,0.75) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  padding: 0 2rem;
}

.hero-content h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero-content p {
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  color: var(--accent-light);
  font-weight: 300;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Page hero (inner pages) */
.page-hero {
  margin-top: var(--nav-height);
  position: relative;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.35;
}

.page-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(13,13,13,0.3), rgba(13,13,13,0.8));
}

.page-hero-content {
  position: relative;
  z-index: 1;
}

.page-hero-content h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
}

/* =============================================
   LAYOUT
   ============================================= */

section { padding: 5rem 0; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.section-divider {
  width: 50px;
  height: 2px;
  background: var(--accent);
  margin: 1rem 0 3rem;
}
.section-divider.center { margin-left: auto; margin-right: auto; }

/* =============================================
   PUBLICATIONS
   ============================================= */

.publications {
  background: var(--bg-secondary);
  text-align: center;
}

.pub-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.pub-badge {
  display: inline-block;
  padding: 0.5rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: all 0.2s;
  background: var(--bg-card);
}
.pub-badge:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.pub-more {
  display: inline-block;
  margin-top: 2rem;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
}
.pub-more:hover { color: var(--accent-light); }

/* =============================================
   QUOTE
   ============================================= */

.quote-section {
  text-align: center;
  background: var(--bg);
}

.quote-section blockquote {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.1rem, 2.5vw, 1.45rem);
  font-style: italic;
  line-height: 1.75;
  color: var(--text);
  max-width: 760px;
  margin: 0 auto;
}

.quote-section cite {
  display: block;
  margin-top: 1.25rem;
  font-style: normal;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
}

/* =============================================
   ABOUT (Business Analytics)
   ============================================= */

.about-section { background: var(--bg-secondary); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-size: 0.925rem;
  line-height: 1.75;
}

.credentials {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.credentials li {
  padding: 0.9rem 1.1rem;
  border-left: 3px solid var(--accent);
  background: var(--bg-card);
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.credentials li strong {
  display: block;
  color: var(--text);
  margin-bottom: 0.15rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* =============================================
   PROJECT CARDS
   ============================================= */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.75rem;
  transition: border-color 0.2s, transform 0.2s;
}
.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.project-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.65rem;
  line-height: 1.45;
}

.project-card p {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.73rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent);
  transition: color 0.2s;
}
.project-link:hover { color: var(--accent-light); }

/* =============================================
   BLOG POSTS
   ============================================= */

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s, transform 0.2s;
}

.post-card-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.post-card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.post-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.75rem;
}

.post-tag {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(201,168,76,0.1);
  padding: 0.18rem 0.55rem;
  border-radius: 2px;
}

.post-date {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.post-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 0.65rem;
  flex: 1;
}

.post-card p {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.1rem;
}

.post-read-more {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent);
  margin-top: auto;
}
.post-read-more:hover { color: var(--accent-light); }

/* =============================================
   UNITED NATIONS
   ============================================= */

.un-intro {
  max-width: 720px;
  color: var(--text-muted);
  font-size: 0.925rem;
  line-height: 1.75;
  margin-bottom: 2.5rem;
}

.un-article-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2rem;
  max-width: 720px;
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.un-icon {
  font-size: 2.5rem;
  flex-shrink: 0;
  line-height: 1;
  margin-top: 0.2rem;
}

.un-article-card h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.15rem;
  margin-bottom: 0.6rem;
  line-height: 1.4;
}

.un-article-card p {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 1.25rem;
  line-height: 1.65;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.25rem;
  border: 1px solid var(--accent);
  border-radius: 3px;
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  transition: all 0.2s;
}
.btn:hover { background: var(--accent); color: #000; }

/* =============================================
   CONTACT
   ============================================= */

.contact-social {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.contact-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-muted);
  font-size: 0.8rem;
  transition: all 0.2s;
}
.contact-social a:hover { border-color: var(--accent); color: var(--accent); }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

/* =============================================
   FOOTER
   ============================================= */

footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem;
  text-align: center;
}

.footer-quote {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 2rem;
  line-height: 1.75;
}

.footer-cta {
  margin-bottom: 2rem;
}
.footer-cta p {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}
.footer-cta a {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
}
.footer-cta a:hover { color: var(--accent-light); }

.footer-social {
  display: flex;
  justify-content: center;
  gap: 1.1rem;
  margin-bottom: 2.5rem;
}
.footer-social a { color: var(--text-muted); font-size: 0.85rem; transition: color 0.2s; }
.footer-social a:hover { color: var(--accent); }

.footer-bottom {
  font-size: 0.7rem;
  color: #3a3a3a;
  letter-spacing: 0.05em;
}

/* =============================================
   RESPONSIVE
   ============================================= */

@media (max-width: 768px) {
  nav { padding: 0 1.25rem; }
  .nav-links, .nav-social { display: none; }
  .hamburger { display: flex; }

  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }

  .projects-grid,
  .posts-grid { grid-template-columns: 1fr; }

  section { padding: 3.5rem 0; }

  .un-article-card { flex-direction: column; gap: 1rem; }
}