/* ==========================================================================
   EventHub — Layout: Navbar, Footer, Hero, Sections
   ========================================================================== */

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 2000;
  background: var(--header-bg);
  backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-base), border-color var(--transition-base);
}
.navbar .nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 20px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.25rem; color: var(--text-color); flex-shrink: 0; }
.brand .brand-icon {
  width: 38px; height: 38px;
  border-radius: 11px;
  background: var(--gradient-primary);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.1rem;
}
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  padding: 9px 14px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--secondary-text-color);
  transition: background var(--transition-fast), color var(--transition-fast);
  position: relative;
}
.nav-links a:hover { background: var(--hover-color); color: var(--text-color); }
.nav-links a.active { color: var(--primary-color); background: var(--primary-light); }

.nav-right { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

.theme-toggle {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--surface-color);
  color: var(--text-color);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  transition: transform var(--transition-fast), background var(--transition-fast);
  position: relative;
  overflow: hidden;
}
.theme-toggle:hover { transform: rotate(15deg); background: var(--hover-color); }
.theme-toggle .fa-sun { display: none; color: #f59e0b; }
.theme-toggle .fa-moon { display: block; color: var(--primary-color); }
[data-theme="dark"] .theme-toggle .fa-sun { display: block; }
[data-theme="dark"] .theme-toggle .fa-moon { display: none; }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--border-color);
  background: var(--surface-color);
  border-radius: 10px;
  color: var(--text-color);
  align-items: center; justify-content: center;
  font-size: 1.1rem;
}

/* User menu */
.user-menu { position: relative; }
.user-avatar-btn {
  display: flex; align-items: center; gap: 8px;
  background: var(--surface-alt-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-pill);
  padding: 5px 14px 5px 5px;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-color);
  transition: background var(--transition-fast);
}
.user-avatar-btn:hover { background: var(--hover-color); }
.user-avatar-btn img, .avatar-circle {
  width: 30px; height: 30px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--gradient-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
}
.user-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 210px;
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-fast);
  z-index: 2100;
}
.user-dropdown.open { opacity: 1; visibility: visible; transform: translateY(0); }
.user-dropdown a, .user-dropdown button {
  display: flex; align-items: center; gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.87rem;
  font-weight: 500;
  color: var(--text-color);
  background: none;
  border: none;
  text-align: left;
}
.user-dropdown a:hover, .user-dropdown button:hover { background: var(--hover-color); }
.user-dropdown .divider { height: 1px; background: var(--border-color); margin: 6px 4px; }
.user-dropdown .logout-item { color: var(--danger-color); }

/* Mobile nav drawer */
.mobile-drawer {
  position: fixed;
  top: 68px; left: 0; right: 0;
  background: var(--surface-color);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  padding: 14px 20px 20px;
  display: none;
  flex-direction: column;
  gap: 4px;
  z-index: 1999;
  max-height: calc(100vh - 68px);
  overflow-y: auto;
}
.mobile-drawer.open { display: flex; animation: fade-in 0.25s ease; }

@media (max-width: 940px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .mobile-drawer a {
    padding: 13px 14px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    color: var(--text-color);
  }
  .mobile-drawer a.active { background: var(--primary-light); color: var(--primary-color); }
  .mobile-drawer a:hover { background: var(--hover-color); }
}

/* ---------- Hero ---------- */
.hero {
  padding: 150px 0 90px;
  background: var(--gradient-soft);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  width: 480px; height: 480px;
  background: var(--gradient-primary);
  opacity: 0.16;
  border-radius: 50%;
  top: -180px; right: -140px;
  filter: blur(10px);
}
.hero-inner { position: relative; z-index: 1; max-width: 720px; margin: 0 auto; text-align: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 22px;
  box-shadow: var(--shadow-sm);
}
.hero h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); margin-bottom: 18px; }
.hero h1 span { background: var(--gradient-primary); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { font-size: 1.1rem; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }

.hero-search {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  padding: 6px 6px 6px 20px;
  max-width: 620px;
  margin: 0 auto;
  gap: 8px;
}
.hero-search i { color: var(--muted-text-color); }
.hero-search input {
  flex: 1;
  border: none;
  background: none;
  padding: 12px 6px;
  font-size: 0.95rem;
  color: var(--text-color);
  outline: none;
}
.hero-search .btn { flex-shrink: 0; }

.hero-stats { display: flex; justify-content: center; gap: 44px; margin-top: 46px; flex-wrap: wrap; }
.hero-stats .stat { text-align: center; }
.hero-stats .stat strong { display: block; font-size: 1.7rem; color: var(--text-color); }
.hero-stats .stat span { font-size: 0.82rem; color: var(--secondary-text-color); }

@media (max-width: 640px) {
  .hero { padding: 120px 0 60px; }
  .hero-search { flex-wrap: wrap; border-radius: var(--radius-md); padding: 12px; }
  .hero-search input { width: 100%; padding: 8px 6px; }
  .hero-search .btn { width: 100%; }
}

/* ---------- Category cards ---------- */
.category-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.category-card {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 26px 18px;
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  cursor: pointer;
}
.category-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: var(--primary-color); }
.category-card .cat-icon {
  width: 56px; height: 56px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 14px;
  color: #fff;
}
.category-card h4 { font-size: 0.95rem; margin-bottom: 4px; }
.category-card span { font-size: 0.78rem; color: var(--muted-text-color); }

@media (max-width: 860px) { .category-grid { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Grids ---------- */
.events-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 980px) { .events-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .events-grid { grid-template-columns: 1fr; } }

.section-footer-cta { text-align: center; margin-top: 36px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--surface-color); border-top: 1px solid var(--border-color); padding: 56px 0 26px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 36px; }
.footer-grid > * { min-width: 0; }
.footer-brand p { font-size: 0.87rem; max-width: 300px; }
.footer-col h5 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 16px; color: var(--text-color); }
.footer-company-description { max-width: 34ch; font-size: 0.82rem; line-height: 1.55; overflow-wrap: anywhere; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 0.88rem; color: var(--secondary-text-color); transition: color var(--transition-fast); }
.footer-col ul li a:hover { color: var(--primary-color); }
.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--muted-text-color);
}

@media (max-width: 860px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
}