/* ── Variables ─────────────────────────────────────────── */
:root {
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-text: #1a1a2e;
  --color-text-muted: #5a5a7a;
  --color-primary: #5850ec;
  --color-primary-hover: #4338ca;
  --color-accent: #f0eeff;
  --color-border: #e5e7eb;
  --color-footer-bg: #1a1a2e;
  --color-footer-text: #c0c0d0;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --max-width: 1120px;
  --radius: 8px;
}

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-hover); }

ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ── Nav ──────────────────────────────────────────────── */
.nav {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}
.nav-logo:hover { color: var(--color-primary); }

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--color-primary); }

/* ── Sections ─────────────────────────────────────────── */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 5rem 1.5rem;
}

.section-sm {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

/* ── Hero ─────────────────────────────────────────────── */
.hero {
  text-align: center;
  padding: 6rem 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.hero p {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 2rem;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Buttons ──────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  transition: background 0.15s, transform 0.1s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  color: #fff;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-accent);
  color: var(--color-primary-hover);
}

/* ── Cards grid ───────────────────────────────────────── */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: box-shadow 0.2s, transform 0.15s;
}

.card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ── Prose ─────────────────────────────────────────────── */
.prose {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.prose h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.prose p {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 1rem;
}

/* ── CTA banner ───────────────────────────────────────── */
.cta-banner {
  background: var(--color-accent);
  border-radius: var(--radius);
  text-align: center;
  padding: 4rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto 4rem;
}

.cta-banner h2 {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.cta-banner p {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

/* ── About page ───────────────────────────────────────── */
.about-hero {
  text-align: center;
  padding: 4rem 1.5rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.about-hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.about-hero p {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 620px;
  margin: 0 auto;
}

/* ── Contact form ─────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.form { display: flex; flex-direction: column; gap: 1.25rem; }

.form label {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
  display: block;
}

.form input,
.form textarea {
  width: 100%;
  padding: 0.7rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: border-color 0.15s;
}

.form input:focus,
.form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-accent);
}

.form textarea { resize: vertical; min-height: 140px; }

.contact-info h3 { margin-bottom: 1rem; }
.contact-info p {
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

/* ── Blog index ───────────────────────────────────────── */
.blog-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 720px;
  margin: 0 auto;
}

.blog-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  transition: box-shadow 0.2s, transform 0.15s;
}

.blog-card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.blog-card a { color: inherit; }
.blog-card a:hover { color: inherit; }

.blog-card-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.blog-card-meta {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  display: flex;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.blog-card-topics { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.blog-topic {
  background: var(--color-accent);
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

/* ── Blog author badge ────────────────────────────────── */
.blog-author {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 500;
}

.blog-author:hover { color: var(--color-primary); }

.blog-author-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
}

/* ── Team member page ────────────────────────────────── */
.team-member-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.team-avatar-lg {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
}

.team-role {
  color: var(--color-text-muted);
  font-size: 1.1rem;
}

.team-member-bio {
  max-width: 640px;
  margin: 0 auto;
}

.team-member-bio p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 1rem;
  text-align: justify;
}

/* ── Team grid (about page) ───────────────────────────── */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.team-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  transition: box-shadow 0.2s, transform 0.15s;
}

.team-card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.team-card-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 1rem;
}

.team-card h3 { margin-bottom: 0.25rem; }

.team-card-role {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.team-card-bio {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.team-card-link {
  font-size: 0.9rem;
  font-weight: 600;
}

.team-contact {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.team-contact h3 { margin-bottom: 1rem; }

.team-contact-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.team-contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.team-contact-link:hover { color: var(--color-primary); }
.team-contact-link .ph { font-size: 1.2rem; }

/* ── Blog post content ───────────────────────────────── */
.blog-content {
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.8;
}

.blog-content h2 { font-size: 1.6rem; font-weight: 700; margin: 2rem 0 0.75rem; }
.blog-content h3 { font-size: 1.3rem; font-weight: 700; margin: 2rem 0 0.75rem; }
.blog-content h4 { font-size: 1.1rem; font-weight: 700; margin: 1.5rem 0 0.5rem; }

.blog-content p {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  font-size: 1.05rem;
  text-align: justify;
}

.blog-content ul, .blog-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
  color: var(--color-text-muted);
}

.blog-content ul { list-style: disc; }
.blog-content ol { list-style: decimal; }

.blog-content code {
  background: var(--color-accent);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9em;
}

.blog-content pre {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 1.25rem;
  border-radius: var(--radius);
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.blog-content pre code {
  background: none;
  padding: 0;
}

.blog-content blockquote {
  border-left: 3px solid var(--color-primary);
  padding-left: 1rem;
  margin: 1.5rem 0;
  color: var(--color-text-muted);
  font-style: italic;
}

.blog-content img {
  width: 100%;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
}

/* ── Lightbox (CSS-only) ─────────────────────────────────── */
.lightbox { display: block; }

.lightbox-toggle { display: none; }

.lightbox label:first-of-type {
  cursor: zoom-in;
}

.lightbox label:first-of-type img {
  width: 100%;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
}

.lightbox-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
}

.lightbox-overlay .lightbox-img {
  max-width: 90vw;
  max-height: 90vh;
  width: auto;
  border-radius: var(--radius);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
}

.lightbox-toggle:checked ~ .lightbox-overlay {
  display: flex;
}

.blog-content a { color: var(--color-primary); text-decoration: underline; }

.blog-post-meta {
  color: var(--color-text-muted);
  font-size: 1rem;
  margin-top: 0.5rem;
}

/* ── Footer ───────────────────────────────────────────── */
.footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 3rem 1.5rem 1.5rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer h4 {
  color: #fff;
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}

.footer p, .footer a {
  font-size: 0.9rem;
  color: var(--color-footer-text);
}

.footer a:hover { color: #fff; }

.footer-social {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.footer-social .ph { font-size: 1.2rem; }

.footer ul { display: flex; flex-direction: column; gap: 0.4rem; }

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
}

/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 768px) {
  .hero h1 { font-size: 2rem; }
  .hero { padding: 4rem 1.5rem; }
  .stats { gap: 2rem; }
  .stat-number { font-size: 2rem; }
  .footer-inner { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .nav-links { gap: 1rem; }
}