/* ===== Reset & Base ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: #ffffff;
  overflow: hidden;
}

/* ===== Full-Screen Background ===== */
body {
  background: url('assets/background.png') no-repeat center center;
  background-size: cover;
  background-attachment: fixed;
}

/* ===== Dark Overlay ===== */
.background-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.50);
  z-index: 1;
}

/* ===== Main Content ===== */
.content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  padding: 2rem;
  text-align: center;
  animation: fadeIn 1.2s ease-out forwards;
  opacity: 0;
}

/* ===== Logo ===== */
.logo-container {
  margin-bottom: 1.5rem;
}

.logo {
  width: 100px;
  height: 100px;
  border-radius: 22px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* ===== Typography ===== */
.headline {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
}

.subheadline {
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  font-weight: 300;
  opacity: 0.9;
  margin-bottom: 0.75rem;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.3);
}

.tagline {
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  font-weight: 300;
  opacity: 0.75;
  max-width: 480px;
  line-height: 1.5;
  margin-bottom: 2.5rem;
}



/* ===== Fade-In Animation ===== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Language Switcher ===== */
.lang-switcher {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 10;
  display: flex;
  gap: 0.5rem;
  animation: fadeIn 1.2s ease-out forwards;
  opacity: 0;
}

.lang-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  cursor: pointer;
  transition: border-color 0.3s ease, transform 0.2s ease, background 0.3s ease;
  padding: 0;
}

.lang-btn img {
  width: 22px;
  height: 22px;
  border-radius: 2px;
  object-fit: cover;
}

.lang-btn:hover {
  border-color: rgba(255, 255, 255, 0.7);
  transform: scale(1.1);
  background: rgba(255, 255, 255, 0.15);
}

.lang-btn.active {
  border-color: #ffffff;
  background: rgba(255, 255, 255, 0.2);
}

/* ===== Responsive ===== */
@media (max-width: 600px) {
  body {
    background-attachment: scroll;
  }

  .logo {
    width: 80px;
    height: 80px;
    border-radius: 18px;
  }

  .notify-form {
    flex-direction: column;
  }

  .notify-btn {
    width: 100%;
  }
}