* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body, html {
  height: 100%;
  width: 100%;
  background-color: #000;
  color: #fff;
  overflow-x: hidden;
}

/* Background Video Styling */
.video-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1;
  pointer-events: none;
}

#bg-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(0,0,0,0.35) 0%, rgba(0,0,0,0.8) 100%);
}

/* Top Header Bar */
.top-bar {
  position: relative;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 32px;
  max-width: 1200px;
  margin: 0 auto;
}

.brand-logo-small {
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: 0.35em;
  font-style: italic;
  text-transform: uppercase;
  color: #ffffff;
  text-shadow: 0 0 15px rgba(255, 255, 255, 0.4);
}

/* Sound Toggle Button */
.sound-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(10px);
  color: #fff;
  padding: 10px 18px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.25s ease;
}

.sound-btn:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

.sound-btn.active {
  background: #ffffff;
  color: #000000;
  border-color: #ffffff;
}

/* Main Container Layout */
.content-container {
  position: relative;
  z-index: 2;
  min-height: calc(100vh - 90px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 20px;
  text-align: center;
}

/* Center Glassmorphism Box */
.hero-box {
  max-width: 580px;
  width: 100%;
  background: rgba(10, 10, 10, 0.55);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 36px 28px;
  border-radius: 16px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.6);
  margin-bottom: 20px;
}

.hero-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.hero-description {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #d1d5db;
  margin-bottom: 26px;
}

/* Form Styles */
.signup-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.input-group {
  display: flex;
  gap: 10px;
}

.input-group input[type="email"] {
  flex: 1;
  padding: 14px 18px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  font-size: 0.95rem;
  outline: none;
}

.input-group input[type="email"]::placeholder {
  color: #888;
}

.input-group button {
  padding: 14px 22px;
  border-radius: 8px;
  border: none;
  background: #ffffff;
  color: #000000;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s ease;
}

.input-group button:hover {
  background: #e5e5e5;
  transform: translateY(-1px);
}

/* Checkbox Options */
.options-group {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: #bbb;
  cursor: pointer;
}

.checkbox-label input {
  accent-color: #ffffff;
}

.footer-copy {
  margin-top: auto;
  padding-bottom: 10px;
  font-size: 0.8rem;
  color: #777;
}

/* Responsive Scaling */
@media (max-width: 600px) {
  .top-bar { padding: 16px 20px; }
  .brand-logo-small { font-size: 1.4rem; }
  .hero-title { font-size: 1.5rem; }
  .input-group { flex-direction: column; }
  .options-group { flex-direction: column; gap: 8px; }
}