/* ==========================================================================
   REGWAVE - RESPONSIVE LAYOUT (SIDEBAR & BOTTOM BAR)
   ========================================================================== */

#app {
  display: flex;
  min-height: 100vh;
  width: 100vw;
}

/* Sidebar Navigation (Desktop) */
.sidebar {
  width: 250px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.5rem 1rem;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  margin-bottom: 2rem;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
  color: #ffffff;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
}

.brand-name {
  font-family: var(--font-title);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.nav-item:hover {
  color: var(--text-primary);
  background-color: var(--bg-card-hover);
}

.nav-item.active {
  background-color: var(--primary-glow);
  color: var(--primary);
}

/* Main Content Area */
.main-wrapper {
  flex: 1;
  margin-left: 250px;
  padding: 2rem;
  max-width: 1400px;
  width: calc(100vw - 250px);
}

/* Top App Header */
.top-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Mobile Navigation Bar (Android Phone) */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background-color: var(--bg-sidebar);
  border-top: 1px solid var(--border-color);
  z-index: 200;
  padding: 0 0.5rem;
  justify-content: space-around;
  align-items: center;
  box-shadow: var(--shadow-lg);
}

.mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-nav-item.active {
  color: var(--primary);
  background-color: var(--primary-glow);
}

/* Responsive Breakpoint for Mobile Android */
@media (max-width: 768px) {
  .sidebar {
    display: none;
  }
  
  .mobile-bottom-nav {
    display: flex;
  }
  
  .main-wrapper {
    margin-left: 0;
    width: 100vw;
    padding: 1rem;
    padding-bottom: 80px;
  }
}