/* Racing Hub - Layout & Navigation */

.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding-bottom: 70px; /* Space for mobile nav bar */
}

/* Compact Header with auto-hide capability */
.main-header {
  position: sticky;
  top: 0;
  z-index: 900;
  background: rgba(5, 8, 17, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: 0.4rem 1.25rem; /* Reduced height */
  transition: transform var(--transition-normal), background var(--transition-normal), opacity var(--transition-normal);
}

/* Header Auto-Hide Classes on Scroll Down */
.main-header.header-hidden {
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
}

.main-header.header-scrolled {
  background: rgba(5, 8, 17, 0.96);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
}

.logo-badge {
  width: 36px; /* Compact logo */
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 12px rgba(0, 75, 147, 0.6);
  border: 2px solid var(--color-cyan);
  font-weight: 900;
  font-size: 0.95rem;
  color: var(--color-white);
}

.logo-text h1 {
  font-size: 1.15rem;
  letter-spacing: -0.5px;
  line-height: 1;
}

/* Desktop Navigation */
.desktop-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: rgba(13, 21, 38, 0.7);
  padding: 0.25rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--glass-border);
}

.nav-link {
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.08);
}

.nav-link.active {
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  box-shadow: 0 2px 10px rgba(0, 75, 147, 0.5);
}

/* Header User Profile Bar */
.user-profile-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(21, 34, 56, 0.85);
  padding: 0.25rem 0.75rem 0.25rem 0.3rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--glass-border);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.user-profile-header:hover {
  border-color: var(--color-cyan);
}

.user-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  border: 2px solid var(--color-accent-gold);
}

.user-meta {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1;
}

.user-level {
  font-size: 0.65rem;
  color: var(--color-accent-gold);
  line-height: 1.2;
}

/* Main Content Wrapper */
.main-content {
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 1.25rem;
  flex: 1;
}

/* Mobile Navigation Bar */
.mobile-nav-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100vw;
  height: 60px;
  background: rgba(5, 8, 17, 0.96);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-top: 1px solid var(--glass-border);
  z-index: 950;
  justify-content: space-around;
  align-items: center;
  padding: 0 0.25rem;
}

.mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  color: var(--text-muted);
  font-size: 0.65rem;
  font-weight: 600;
  padding: 0.25rem 0.4rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
  text-decoration: none;
}

.mobile-nav-item i {
  font-size: 1.05rem;
}

.mobile-nav-item.active {
  color: var(--color-cyan);
}

@media (max-width: 1024px) {
  .desktop-nav {
    display: none;
  }
  .mobile-nav-bar {
    display: flex;
  }
}