/*
Theme Name: Future Lab Labsite
Theme URI: https://example.com/
Author: Codex Assistant
Description: WordPress theme for Future Lab laboratory site
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: future-lab
*/

:root {
  --primary: #0052d4;
  --primary-light: #65c7f7;
  --text: #222;
  --background: #f7f9fc;
  --muted: #606a7b;
  --white: #fff;
  --shadow: 0 16px 40px rgba(0, 59, 150, 0.12);
  --radius: 16px;
  font-size: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background-color: var(--white);
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background-color: rgba(255, 255, 255, 0.98);
  border-bottom: 1px solid rgba(0, 82, 212, 0.08);
  backdrop-filter: blur(12px);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

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

.nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav a {
  color: var(--muted);
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav a:hover,
.nav a:focus {
  color: var(--primary);
}

.nav .btn {
  padding: 0.55rem 1.25rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  box-shadow: var(--shadow);
}

.hero {
  padding: 6rem 0 4.5rem;
  background: radial-gradient(circle at top left, rgba(101, 199, 247, 0.35), transparent 55%),
              radial-gradient(circle at bottom right, rgba(0, 82, 212, 0.25), transparent 60%),
              var(--background);
  text-align: center;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.25rem, 4vw, 3.5rem);
  font-weight: 700;
  color: #0f1f3d;
}

.hero p {
  margin: 1.25rem auto 2rem;
  max-width: 640px;
  font-size: 1.05rem;
  color: var(--muted);
}

.hero .cta {
  display: inline-block;
  padding: 0.85rem 2.4rem;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  font-weight: 600;
  box-shadow: var(--shadow);
}

.hero-sub {
  text-align: left;
  padding: 4.5rem 0 3rem;
}

.section {
  padding: 4rem 0;
}

.section-alt {
  background-color: var(--background);
}

.section h2 {
  margin-top: 0;
  margin-bottom: 2rem;
  font-size: 2rem;
}

.grid {
  display: grid;
  gap: 1.75rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.grid article {
  background-color: var(--white);
  padding: 1.75rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.team-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.team-card {
  border-radius: var(--radius);
  padding: 1.75rem;
  background-color: var(--white);
  box-shadow: var(--shadow);
  text-align: center;
}

.avatar {
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  display: grid;
  place-items: center;
  font-weight: 700;
}

.paper-list {
  padding-left: 1.2rem;
  margin: 0;
  display: grid;
  gap: 0.85rem;
}

.paper-list li {
  background-color: var(--white);
  padding: 1rem 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  list-style: none;
}

.timeline {
  display: grid;
  gap: 1.5rem;
}

.timeline-item {
  padding: 1.75rem;
  border-left: 4px solid var(--primary);
  background-color: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.timeline-item h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
}

.tag {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  background-color: rgba(0, 82, 212, 0.12);
  color: var(--primary);
  font-weight: 600;
  font-size: 0.85rem;
}

.site-footer {
  padding: 2rem 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.95rem;
  border-top: 1px solid rgba(0, 82, 212, 0.08);
}

@media (max-width: 720px) {
  .nav {
    display: none;
  }

  .site-header .container {
    justify-content: center;
  }

  .hero {
    padding: 5rem 0 3.75rem;
  }
}