* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: var(--font-main);
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-app);
  color: var(--text-primary);
  display: flex;
  justify-content: center;
  min-height: 100vh;
}

.app-viewport {
  width: 100%;
  max-width: 430px;
  min-height: 100vh;
  padding: 20px 20px 100px 20px;
  position: relative;
}

/* Splash Screen */
.splash-container {
  position: fixed;
  inset: 0;
  background: #FFFFFF;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  transition: opacity 0.45s ease;
}

.splash-content {
  text-align: center;
}

.logo-icon {
  font-size: 54px;
}

.brand-title {
  font-size: 24px;
  font-weight: 700;
  margin-top: 12px;
}

.brand-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-top: 4px;
}

/* Bottom Navigation */
.bottom-nav {
  position: fixed;
  bottom: 0;
  width: 100%;
  max-width: 430px;
  height: 75px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  justify-content: space-around;
  align-items: center;
  border-top: var(--border-card);
  z-index: 100;
}

.nav-item {
  background: none;
  border: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition-slow);
}

.nav-item.active {
  color: var(--text-primary);
  transform: scale(1.05);
}

.nav-label {
  font-size: 11px;
  font-weight: 500;
}

.greeting-sub {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  font-weight: 700;
  margin-bottom: 2px;
}

.greeting-main {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
}