/* ============================================
   VitaminDigital — Components
   Theme toggle, Lang toggle, Loader, Cursor, Nav
   ============================================ */

/* ===== THEME TOGGLE ===== */
.theme-toggle {
  position: fixed;
  right: 1.2rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5000;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  align-items: center;
}

.theme-toggle-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-hover);
  background: var(--bg-alt);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px var(--shadow);
  backdrop-filter: blur(10px);
}

.theme-toggle-btn:hover {
  border-color: var(--yellow);
  background: var(--yellow);
  color: var(--bg);
  transform: scale(1.1);
}

.theme-toggle-label {
  font-size: 0.55rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  writing-mode: vertical-lr;
  margin-top: 0.4rem;
}

/* ===== LANG TOGGLE ===== */
.lang-toggle {
  position: fixed;
  left: 1.2rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5000;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  align-items: center;
}

.lang-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-hover);
  background: var(--bg-alt);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px var(--shadow);
  backdrop-filter: blur(10px);
}

.lang-btn:hover {
  border-color: var(--yellow);
  background: var(--yellow);
  color: var(--bg);
  transform: scale(1.1);
}

.lang-toggle-label {
  font-size: 0.55rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  writing-mode: vertical-lr;
  margin-top: 0.4rem;
}

/* ===== CURSOR ===== */
@media (hover: hover) {
  body { cursor: none; }
  a, button { cursor: none; }
}

.cursor {
  width: 20px;
  height: 20px;
  border: 2px solid var(--yellow);
  border-radius: 50%;
  position: fixed;
  top: -100px;
  left: -100px;
  pointer-events: none;
  z-index: 9999;
  transition: transform 0.15s, background 0.15s;
  mix-blend-mode: difference;
}

.cursor.hover {
  transform: scale(2.5);
  background: var(--yellow);
}

/* ===== LOADER ===== */
.loader {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1rem;
  transition: opacity 0.5s, visibility 0.5s;
}

.loader.hidden { opacity: 0; visibility: hidden; }

.loader-logo {
  width: 110px;
  height: auto;
  animation: loaderPulse 1.2s ease-in-out infinite alternate;
}

.loader-bar {
  width: 120px;
  height: 2px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.loader-bar-fill {
  width: 0;
  height: 100%;
  background: var(--yellow);
  animation: loaderFill 1.5s cubic-bezier(0.77, 0, 0.18, 1) forwards;
}

@keyframes loaderPulse {
  from { opacity: 0.4; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes loaderFill {
  to { width: 100%; }
}

/* ===== NAV ===== */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.3s ease;
  background: transparent;
}

nav.scrolled {
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.nav-logo img { height: 55px; width: auto; }

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 3px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--yellow);
  transition: width 0.3s;
}

.nav-links a:hover::after { width: 100%; }

.nav-cta {
  background: var(--yellow) !important;
  color: #242424 !important;
  padding: 0.55rem 1.3rem;
  font-weight: 600 !important;
  transition: background 0.3s;
}

.nav-cta:hover { background: var(--yellow-light) !important; }
.nav-cta::after { display: none !important; }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: 1002;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: all 0.3s;
}

.menu-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }