* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #0a74da;
  --dark: #000000;
  --darker: #000000;
  --card: #161b22;
  --border: #21262d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --green: #3fb950;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--dark);
  color: var(--text);
  line-height: 1.6;
}

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(13, 17, 23, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 5%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text);
}

.nav-logo span {
  color: var(--accent);
}

.nav-logo img {
  height: 36px;
  width: 36px;
  border-radius: 6px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--accent);
}

.nav-cta {
  background: var(--primary);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: 6px;
  font-weight: 600;
  transition: background 0.2s !important;
}

.nav-cta:hover { background: #1a85f5 !important; color: #fff !important; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 5% 60px;
  background: radial-gradient(ellipse at 50% 0%, rgba(10, 116, 218, 0.15) 0%, transparent 70%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%230a74da' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  background: rgba(10, 116, 218, 0.15);
  border: 1px solid rgba(10, 116, 218, 0.4);
  color: var(--accent);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 2.5rem;
}

.btn-group {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  display: inline-block;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover { background: #1a85f5; transform: translateY(-2px); }

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

/* SECTIONS */
section {
  padding: 80px 5%;
}

.section-label {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-sub {
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 3rem;
}

.section-header { margin-bottom: 3rem; }
.section-header.center { text-align: center; }
.section-header.center .section-sub { margin: 0 auto 3rem; }

/* GRID */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; }

/* CARD */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.8rem;
  transition: border-color 0.2s, transform 0.2s;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--muted);
  font-size: 0.9rem;
}

/* WHY JOIN */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.2rem;
}

.why-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem 1.2rem;
  text-align: center;
  transition: all 0.2s;
}

.why-card:hover {
  border-color: var(--accent);
  background: rgba(88, 166, 255, 0.05);
}

.why-card .icon { font-size: 2rem; margin-bottom: 0.8rem; }
.why-card h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 0.3rem; }
.why-card p { font-size: 0.82rem; color: var(--muted); }

/* EVENTS */
.event-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  gap: 1.2rem;
  align-items: flex-start;
  transition: all 0.2s;
}

.event-card:hover { border-color: var(--accent); transform: translateY(-3px); }

.event-date {
  background: rgba(10, 116, 218, 0.15);
  border: 1px solid rgba(10, 116, 218, 0.3);
  border-radius: 8px;
  padding: 0.6rem 1rem;
  text-align: center;
  min-width: 60px;
  flex-shrink: 0;
}

.event-date .month { font-size: 0.7rem; color: var(--accent); font-weight: 700; text-transform: uppercase; }
.event-date .day { font-size: 1.4rem; font-weight: 800; line-height: 1; }

.event-info h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.3rem; }
.event-info p { font-size: 0.85rem; color: var(--muted); margin-bottom: 0.5rem; }

.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.tag-upcoming { background: rgba(63, 185, 80, 0.15); color: var(--green); border: 1px solid rgba(63, 185, 80, 0.3); }
.tag-soon { background: rgba(10, 116, 218, 0.15); color: var(--accent); border: 1px solid rgba(10, 116, 218, 0.3); }
.tag-planned { background: rgba(139, 148, 158, 0.15); color: var(--muted); border: 1px solid var(--border); }

/* TEAM */
.team-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.8rem;
  text-align: center;
  transition: all 0.2s;
}

.team-card:hover { border-color: var(--accent); transform: translateY(-4px); }

.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: 700;
  margin: 0 auto 1rem;
  color: #fff;
  overflow: hidden;
}

.team-avatar img { width: 100%; height: 100%; object-fit: cover; }

.team-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.2rem; }
.team-card .role { font-size: 0.82rem; color: var(--accent); margin-bottom: 0.8rem; }

.linkedin-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.8rem;
  transition: all 0.2s;
}

.linkedin-btn:hover { border-color: #0a66c2; color: #0a66c2; }

/* CTA SECTION */
.cta-section {
  background: linear-gradient(135deg, rgba(10, 116, 218, 0.12) 0%, rgba(88, 166, 255, 0.06) 100%);
  border: 1px solid rgba(10, 116, 218, 0.2);
  border-radius: 16px;
  padding: 60px 5%;
  text-align: center;
  margin: 0 5% 80px;
}

.cta-section h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; margin-bottom: 1rem; }
.cta-section p { color: var(--muted); margin-bottom: 2rem; }

/* FORM */
.form-group { margin-bottom: 1.2rem; }

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.4rem;
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  color: var(--text);
  font-size: 0.9rem;
  font-family: inherit;
  transition: border-color 0.2s;
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}

.form-group textarea { resize: vertical; min-height: 100px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* PAGE HERO */
.page-hero {
  padding: 120px 5% 60px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(10, 116, 218, 0.1) 0%, transparent 60%);
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

.page-hero p { color: var(--muted); font-size: 1.05rem; max-width: 520px; margin: 0 auto; }

/* DIVIDER */
.divider {
  height: 1px;
  background: var(--border);
  margin: 0 5%;
}

/* FOOTER */
footer {
  background: var(--darker);
  border-top: 1px solid var(--border);
  padding: 50px 5% 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2.5rem;
}

.footer-brand p { color: var(--muted); font-size: 0.88rem; margin-top: 0.8rem; max-width: 280px; }

.footer-col h4 { font-size: 0.85rem; font-weight: 700; margin-bottom: 1rem; color: var(--text); }

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col ul li a { color: var(--muted); text-decoration: none; font-size: 0.85rem; transition: color 0.2s; }
.footer-col ul li a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p { color: var(--muted); font-size: 0.82rem; }

.social-links { display: flex; gap: 0.8rem; }

.social-links a {
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: all 0.2s;
}

.social-links a:hover { border-color: var(--accent); color: var(--accent); }

/* ABOUT PAGE */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-visual {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.5rem;
  text-align: center;
}

.about-visual .big-icon { font-size: 5rem; margin-bottom: 1rem; }
.about-visual h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 0.5rem; }
.about-visual p { color: var(--muted); font-size: 0.9rem; }

.vm-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.vm-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
}

.vm-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 1rem; color: var(--accent); }
.vm-card ul { list-style: none; }
.vm-card ul li { color: var(--muted); font-size: 0.9rem; padding: 0.3rem 0; padding-left: 1.2rem; position: relative; }
.vm-card ul li::before { content: '→'; position: absolute; left: 0; color: var(--accent); }

/* CONTACT */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem;
  align-items: start;
}

.contact-info-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
}

.contact-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.contact-item:last-child { border-bottom: none; }

.contact-item .ci-icon {
  font-size: 1.3rem;
  width: 40px;
  height: 40px;
  background: rgba(10, 116, 218, 0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-item h4 { font-size: 0.85rem; font-weight: 600; margin-bottom: 0.2rem; }
.contact-item p, .contact-item a { font-size: 0.88rem; color: var(--muted); text-decoration: none; }
.contact-item a:hover { color: var(--accent); }

/* BENEFITS */
.benefit-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.benefit-item:last-child { border-bottom: none; }
.benefit-icon { font-size: 1.4rem; flex-shrink: 0; margin-top: 2px; }
.benefit-item h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 0.2rem; }
.benefit-item p { font-size: 0.85rem; color: var(--muted); }

/* RESPONSIVE */
@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--darker); border-bottom: 1px solid var(--border); padding: 1rem 5%; gap: 0; }
  .nav-links.open { display: flex; }
  .nav-links li { padding: 0.7rem 0; border-bottom: 1px solid var(--border); }
  .nav-links li:last-child { border-bottom: none; }
  .hamburger { display: flex; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .about-intro { grid-template-columns: 1fr; }
  .vm-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .cta-section { margin: 0 0 60px; border-radius: 0; border-left: none; border-right: none; }
}

@media (max-width: 480px) {
  section { padding: 60px 4%; }
  .hero { padding: 90px 4% 50px; }
}

/* ANIMATIONS */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}