/* ===== TinyverseGP Website Stylesheet ===== */

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

:root {
  --primary:    #2e7d32;
  --primary-dk: #1b5e20;
  --accent:     #66bb6a;
  --light:      #f1f8e9;
  --dark:       #1a1a1a;
  --text:       #333333;
  --muted:      #666666;
  --border:     #dde7d0;
  --white:      #ffffff;
  --code-bg:    #f5f5f5;
  --shadow:     0 2px 12px rgba(0,0,0,.08);
  --radius:     8px;
  --max-w:      1100px;
  --font-sans:  'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono:  'Fira Code', 'Cascadia Code', 'Consolas', monospace;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text);
  background: var(--white);
}

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

h1, h2, h3, h4 {
  line-height: 1.25;
  font-weight: 700;
  color: var(--dark);
}

/* ---- Layout helpers ---- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 1.5rem; }
.section    { padding: 4rem 0; }
.section-alt { background: var(--light); }

/* ---- Navbar ---- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--primary-dk);
  box-shadow: 0 2px 8px rgba(0,0,0,.25);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.5rem;
}

.navbar-brand {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white) !important;
  text-decoration: none;
}
.navbar-brand span { color: var(--accent); }

.navbar-nav {
  list-style: none;
  display: flex;
  gap: 0.25rem;
}

.navbar-nav a {
  color: rgba(255,255,255,.85);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius);
  font-size: 0.92rem;
  transition: background .2s;
}

.navbar-nav a:hover,
.navbar-nav a.active {
  background: rgba(255,255,255,.15);
  color: var(--white);
  text-decoration: none;
}

/* ---- Hero ---- */
.hero {
  background: linear-gradient(135deg, var(--primary-dk) 0%, var(--primary) 60%, #388e3c 100%);
  color: var(--white);
  text-align: center;
  padding: 5.5rem 1.5rem 4.5rem;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  color: var(--white);
  margin-bottom: 0.75rem;
}

.hero h1 .highlight { color: var(--accent); }

.hero .tagline {
  font-size: 1.2rem;
  opacity: .9;
  max-width: 700px;
  margin: 0 auto 2rem;
}

.badges { display: flex; gap: 0.5rem; flex-wrap: wrap; justify-content: center; margin-bottom: 2rem; }
.badges img { height: 22px; }

.btn-group { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: opacity .2s, transform .1s;
  cursor: pointer;
  text-decoration: none !important;
}
.btn:hover { opacity: .88; transform: translateY(-1px); }

.btn-white   { background: var(--white); color: var(--primary-dk); }
.btn-outline { background: transparent; border: 2px solid rgba(255,255,255,.7); color: var(--white); }
.btn-primary { background: var(--primary); color: var(--white); }
.btn-accent  { background: var(--accent); color: var(--primary-dk); }

/* ---- Section headings ---- */
.section-title {
  font-size: 1.85rem;
  margin-bottom: 0.5rem;
}

.section-subtitle {
  color: var(--muted);
  margin-bottom: 2.5rem;
  font-size: 1.05rem;
}

.section-line {
  width: 50px;
  height: 4px;
  background: var(--primary);
  border-radius: 2px;
  margin: 0.6rem 0 1.2rem;
}

/* ---- About ---- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

@media (max-width: 720px) {
  .about-grid { grid-template-columns: 1fr; }
}

.feature-list { list-style: none; display: flex; flex-direction: column; gap: 0.9rem; }

.feature-list li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.feature-list .icon {
  font-size: 1.35rem;
  line-height: 1.5;
  flex-shrink: 0;
}

.feature-list strong { display: block; margin-bottom: 0.15rem; }

/* ---- Representations / Cards ---- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 1.25rem;
}

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

.card:hover { transform: translateY(-3px); box-shadow: 0 6px 20px rgba(0,0,0,.12); }

.card-icon { font-size: 2rem; margin-bottom: 0.75rem; }
.card h3   { font-size: 1.05rem; margin-bottom: 0.5rem; color: var(--primary-dk); }
.card p    { font-size: 0.92rem; color: var(--muted); }

/* ---- Domain badges inside cards ---- */
.domains {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-top: 0.75rem;
}

.domain-tag {
  background: var(--light);
  color: var(--primary-dk);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.75rem;
  padding: 0.15rem 0.6rem;
  font-weight: 600;
}

/* ---- Code blocks ---- */
pre, code {
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  line-height: 1.6;
}

code {
  background: var(--code-bg);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  border: 1px solid var(--border);
}

pre code { background: none; border: none; padding: 0; font-size: inherit; }

/* ---- Step list (Getting started) ---- */
.steps { display: flex; flex-direction: column; gap: 2rem; }

.step {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 1rem;
  align-items: start;
}

.step-num {
  width: 2.5rem;
  height: 2.5rem;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.step-body h3 { margin-bottom: 0.5rem; font-size: 1.05rem; }
.step-body p  { color: var(--muted); margin-bottom: 0.75rem; font-size: 0.95rem; }

/* ---- Examples table ---- */
.examples-table { width: 100%; border-collapse: collapse; font-size: 0.93rem; }
.examples-table th {
  background: var(--primary);
  color: var(--white);
  padding: 0.65rem 1rem;
  text-align: left;
  font-weight: 600;
}
.examples-table td { padding: 0.65rem 1rem; border-bottom: 1px solid var(--border); }
.examples-table tr:last-child td { border-bottom: none; }
.examples-table tr:hover td { background: var(--light); }
.examples-table code { font-size: 0.82rem; }

/* ---- Contribute section ---- */
.contrib-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.contrib-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  background: var(--white);
  box-shadow: var(--shadow);
}

.contrib-card .contrib-icon { font-size: 2rem; margin-bottom: 0.75rem; }
.contrib-card h3 { font-size: 1rem; margin-bottom: 0.5rem; }
.contrib-card p  { font-size: 0.91rem; color: var(--muted); }

/* ---- Team ---- */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.25rem;
}

.team-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.team-card .avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.team-card h3 { font-size: 0.95rem; margin-bottom: 0.2rem; }
.team-card .affil { font-size: 0.82rem; color: var(--muted); margin-bottom: 0.35rem; }
.team-card .role  { font-size: 0.82rem; color: var(--primary); font-style: italic; }

/* ---- Publication ---- */
.pub-box {
  background: var(--light);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.25rem 1.5rem;
  font-size: 0.95rem;
  line-height: 1.75;
}

/* ---- Footer ---- */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,.7);
  padding: 2.5rem 0;
  text-align: center;
  font-size: 0.88rem;
}

.footer a { color: var(--accent); }
.footer a:hover { color: var(--white); }

.footer-links {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

/* ---- Responsive tweaks ---- */
@media (max-width: 600px) {
  .navbar-nav { gap: 0; }
  .navbar-nav a { padding: 0.4rem 0.5rem; font-size: 0.82rem; }
}