:root {
  --bg: #0B1A2F;
  --bg-soft: #142844;
  --fg: #E8E0D0;
  --fg-soft: #B5A989;
  --accent: #C9A76C;
  --accent-bright: #E8C887;
  --serif: 'Spectral', 'Crimson Pro', Georgia, serif;
  --body: 'Crimson Pro', Georgia, serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--body);
  font-size: 18px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: var(--accent); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color 0.2s ease; }
a:hover, a:focus { border-bottom-color: var(--accent); }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.2; margin: 0 0 0.5em 0; color: var(--fg); }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); color: var(--accent); margin-top: 3rem; margin-bottom: 1rem; letter-spacing: 0.02em; }
h3 { font-size: 1.25rem; color: var(--accent-bright); margin-bottom: 0.25rem; }
p { margin: 0 0 1em 0; }
.container { max-width: 720px; margin: 0 auto; padding: 4rem 1.5rem; }
header { border-bottom: 1px solid var(--bg-soft); padding-bottom: 2rem; margin-bottom: 1rem; }
.header-inner { display: flex; align-items: center; gap: 2rem; }
.photo { width: 110px; height: 110px; border-radius: 50%; object-fit: cover; object-position: center top; border: 3px solid var(--accent); flex-shrink: 0; }
.header-text { flex: 1; }
.name { margin-bottom: 0.25rem; }
.tagline { font-family: var(--serif); font-style: italic; color: var(--fg-soft); font-size: 1.05rem; margin-bottom: 0.75rem; line-height: 1.3; }

/* ORCID link styling */
.header-links { margin-bottom: 1rem; }
.orcid-link { 
  display: inline-flex; align-items: center; gap: 0.5rem; 
  font-size: 0.9rem; color: var(--fg-soft); 
  background: var(--bg-soft); padding: 0.3rem 0.6rem; border-radius: 4px;
  border: 1px solid transparent; transition: all 0.2s ease;
}
.orcid-link:hover { border-color: var(--accent); color: var(--accent); border-bottom: 1px solid var(--accent); }
.orcid-icon { 
  background: #A6CE39; color: #fff; font-weight: bold; font-size: 0.7rem; 
  padding: 1px 3px; border-radius: 2px; line-height: 1;
}

@media (max-width: 520px) { .header-inner { flex-direction: column; align-items: center; text-align: center; } .photo { width: 90px; height: 90px; } }
section { margin-top: 2rem; }

/* Language switcher */
.lang-switcher { display: flex; gap: 0.5rem; margin-top: 1rem; }
.lang-btn {
  font-family: var(--serif); font-size: 0.85rem; font-weight: 600;
  background: transparent; color: var(--fg-soft); border: 1px solid var(--bg-soft);
  padding: 0.3em 0.7em; border-radius: 3px; cursor: pointer; transition: all 0.2s ease;
}
.lang-btn:hover { color: var(--accent); border-color: var(--accent); }
.lang-btn.active { color: var(--accent); border-color: var(--accent); border-bottom: 2px solid var(--accent); }

/* Books grid */
.books { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; margin-top: 1.5rem; }
.book { background: var(--bg-soft); border-radius: 4px; padding: 1.25rem 1.5rem; border-left: 3px solid var(--accent); transition: transform 0.2s ease; }
.book:hover { transform: translateY(-4px); }
.book-cover { width: 100%; aspect-ratio: 2/3; object-fit: cover; border-radius: 2px; margin-bottom: 1rem; display: block; }
.book-vol { font-size: 0.8rem; color: var(--fg-soft); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 0.25rem; }
.book-title { margin-bottom: 0.5rem; }
.book-status { font-size: 0.85rem; color: var(--fg-soft); font-style: italic; margin-bottom: 0.75rem; }
.book-isbn { font-size: 0.8rem; color: var(--fg-soft); margin-bottom: 0.25rem; font-family: monospace; }
.book-isbn strong { color: var(--fg); font-family: var(--serif); }
.book-price { font-size: 0.9rem; color: var(--accent); font-weight: 600; margin-bottom: 0.75rem; }
.book-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.75rem; }
.btn { display: inline-flex; align-items: center; gap: 0.35rem; font-family: var(--serif); font-size: 0.82rem; font-weight: 600; letter-spacing: 0.04em; padding: 0.4em 0.9em; border-radius: 3px; border: none; cursor: pointer; text-decoration: none; transition: opacity 0.2s ease, background 0.2s ease; }
.btn:hover { opacity: 0.85; border-bottom: none; }
.btn-epub { background: var(--accent); color: var(--bg); }
.btn-print { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.btn-print:hover { background: var(--accent); color: var(--bg); }
.btn-disabled { opacity: 0.45; cursor: not-allowed; pointer-events: none; }

/* Projects */
.projects { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; margin-top: 1.5rem; }
.project { background: var(--bg-soft); border-radius: 4px; padding: 1.25rem 1.5rem; }
.project-name { font-family: var(--serif); font-weight: 600; color: var(--accent-bright); margin-bottom: 0.25rem; }
.project-desc { font-size: 0.95rem; color: var(--fg-soft); margin: 0; }

/* Links */
.links { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 1rem; margin-top: 1.5rem; }
.link-item { display: flex; flex-direction: column; }
.link-label { font-size: 0.8rem; color: var(--fg-soft); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 0.2rem; }

/* Footer */
footer { margin-top: 4rem; padding-top: 2rem; border-top: 1px solid var(--bg-soft); font-size: 0.85rem; color: var(--fg-soft); text-align: center; }
footer p { margin-bottom: 0.5rem; }

/* Order box */
.order-box { background: var(--bg-soft); border: 1px solid var(--accent); border-radius: 4px; padding: 1.5rem 2rem; margin-top: 1.5rem; text-align: center; }
.order-box p { color: var(--fg-soft); font-size: 0.95rem; margin-bottom: 1.25rem; }
.order-box .btn { font-size: 1rem; padding: 0.55em 1.5em; }

/* Lead paragraph */
.lead { font-size: 1.05rem; color: var(--fg-soft); line-height: 1.7; }
.bio-content strong { color: var(--accent-bright); }

/* Scientific Pillars Section */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}
.pillar-item {
  background: var(--bg-soft);
  padding: 1.5rem;
  border-radius: 4px;
  border-top: 2px solid var(--accent);
}
.pillar-item h3 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}
.pillar-item p {
  font-size: 0.9rem;
  color: var(--fg-soft);
  margin: 0;
  line-height: 1.5;
}

/* CV Section */
.cv-box {
  background: var(--bg-soft);
  border-radius: 4px;
  padding: 1.5rem 2rem;
  margin-top: 1.5rem;
  border: 1px dashed var(--fg-soft);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.cv-summary {
  font-weight: 600;
  color: var(--accent-bright);
  font-size: 1rem;
  margin: 0;
}
.cv-details {
  font-size: 0.95rem;
  color: var(--fg-soft);
  line-height: 1.6;
  margin: 0;
  text-align: justify;
}
.cv-box .btn {
  align-self: center;
  margin-top: 0.5rem;
}

/* Pre-order banner */
.preorder-note {
  background: var(--bg-soft); border-left: 3px solid var(--accent);
  padding: 0.75rem 1rem; margin: 1rem 0; font-size: 0.9rem; color: var(--fg-soft);
}

/* Tome 4 download page */
.book-detail { text-align: center; margin-bottom: 2rem; }
.book-detail .book-cover { margin: 0 auto 1rem; max-width: 280px; }
.download-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1.5rem; margin-top: 1.5rem; }
.download-card { background: var(--bg-soft); border-radius: 4px; padding: 1.25rem 1.5rem; text-align: center; }
.download-card h3 { color: var(--accent-bright); margin-bottom: 1rem; }
.download-count { font-size: 0.8rem; color: var(--fg-soft); margin-top: 0.5rem; }
.platforms-list { list-style: none; padding: 0; margin: 1rem 0 0; }
.platforms-list li { padding: 0.5rem 0; border-bottom: 1px solid var(--bg-soft); color: var(--fg-soft); }
.platforms-list li:last-child { border-bottom: none; }