/* Top Navigation */
.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 100;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  background-color: rgba(var(--bg-rgb), 0.5);
  transition: var(--transition);
  transform: translateY(0);
}

.top-nav.hidden {
  transform: translateY(-100%);
}

.logo {
  font-family: var(--font-primary);
  font-weight: 800;
  font-size: 22px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-transform: uppercase;
}

.menu-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  cursor: pointer;
  transition: var(--transition);
}

.menu-toggle i {
  font-size: 18px;
  transition: var(--transition);
}

.menu-toggle.active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.menu-toggle.active i {
  transform: rotate(90deg);
  color: white;
}

/* Bottom Navigation */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: calc(var(--bottom-nav-height) + var(--safe-area-bottom));
  background-color: rgba(var(--bg-rgb), 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  justify-content: space-around;
  align-items: center;
  border-top: 1px solid var(--border);
  padding-bottom: var(--safe-area-bottom);
  z-index: 100;
  transition: transform 0.4s ease-in-out;
}

.bottom-nav.hidden {
  transform: translateY(100%);
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 20%;
  padding: 10px 0;
  position: relative;
  overflow: hidden;
}

.nav-item-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-bottom: 5px;
  position: relative;
  z-index: 1;
}

.nav-item-text {
  font-size: 10px;
  font-weight: 500;
  transition: var(--transition);
  opacity: 0.7;
}

.nav-item.active .nav-item-text {
  opacity: 1;
  font-weight: 600;
}

.nav-item.active .nav-item-icon i {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  transform: scale(1.2);
}

.nav-item::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 20px;
  height: 3px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 3px;
  transition: transform 0.3s ease;
}

.nav-item.active::after {
  transform: translateX(-50%) scaleX(1);
}

.nav-item-icon i {
  font-size: 18px;
  transition: var(--transition);
}

/* Floating Action Button */
.fab {
  position: fixed;
  bottom: calc(var(--bottom-nav-height) + 20px);
  right: 20px;
  width: 60px;
  height: 60px;
  border-radius: 30px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(126, 84, 237, 0.3);
  z-index: 99;
  transform: translateY(0) scale(1);
  transition: var(--transition);
}

.fab i {
  color: white;
  font-size: 24px;
}

.fab:active {
  transform: scale(0.92);
}

/* Theme Toggle */
.theme-toggle {
  position: fixed;
  top: calc(var(--header-height) + 15px);
  right: 15px;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 4px 15px rgba(126, 84, 237, 0.3);
  z-index: 98;
  transition: var(--transition);
}

.theme-toggle i {
  font-size: 20px;
  color: white;
  transition: transform 0.5s ease;
}

.theme-toggle:active {
  transform: scale(0.92);
}

/* Fullscreen Menu */
.fullscreen-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  transform: translateY(-20px);
}

.fullscreen-menu.active {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.menu-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 10;
}

.menu-item {
  font-family: var(--font-primary);
  font-size: 32px;
  font-weight: 700;
  margin: 15px 0;
  position: relative;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.fullscreen-menu.active .menu-item {
  opacity: 1;
  transform: translateY(0);
}

.fullscreen-menu.active .menu-item:nth-child(1) {
  transition-delay: 0.1s;
}
.fullscreen-menu.active .menu-item:nth-child(2) {
  transition-delay: 0.15s;
}
.fullscreen-menu.active .menu-item:nth-child(3) {
  transition-delay: 0.2s;
}
.fullscreen-menu.active .menu-item:nth-child(4) {
  transition-delay: 0.25s;
}
.fullscreen-menu.active .menu-item:nth-child(5) {
  transition-delay: 0.3s;
}

.menu-item::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  transition: width 0.3s ease-in-out;
}

.menu-item:hover::after {
  width: 100%;
}

.menu-social {
  position: absolute;
  bottom: 50px;
  display: flex;
  gap: 15px;
}

.menu-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition);
}

.menu-social a:hover {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.menu-social a:hover i {
  color: white;
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: calc(var(--bottom-nav-height) + var(--safe-area-bottom) + 20px);
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background-color: var(--bg-alt);
  border-radius: var(--small-radius);
  padding: 15px 20px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  min-width: 250px;
  display: flex;
  align-items: center;
  z-index: 1000;
  opacity: 0;
  transition: all 0.3s ease;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast-icon {
  margin-right: 12px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 50%;
}

.toast-icon i {
  font-size: 12px;
  color: white;
}

.toast-text {
  font-size: 14px;
}