:root {
  --primary-gradient: linear-gradient(135deg, #00d2ff 0%, #3a7bd5 100%);
  --bg-color: #0b0e14;
  --card-bg: rgba(255, 255, 255, 0.05);
  --text-primary: #f8f9fa;
  --text-secondary: #adb5bd;
  --accent-color: #00d2ff;
  --success-color: #2ecc71;
}

body {
  font-family: Tahoma, Arial, sans-serif;
  line-height: 1.6;
  font-size: 1.1rem;
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px;
  color: var(--text-primary);
  background-color: var(--bg-color);
  background-image:
    radial-gradient(at 0% 0%, rgba(58, 123, 213, 0.15) 0, transparent 50%),
    radial-gradient(at 100% 100%, rgba(0, 210, 255, 0.1) 0, transparent 50%);
  min-height: 100vh;
}

h1,
h2,
h3 {
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 24px;
}

h2 {
  font-size: 2.2rem;
}

a {
  text-decoration: none;
  color: var(--accent-color);
  transition: all 0.2s ease;
}

a:hover {
  filter: brightness(1.2);
  text-decoration: underline;
}

img.banner {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  margin-bottom: 40px;
}

#menu {
  display: flex;
  align-items: center;
  padding: 0;
  margin-bottom: 60px;
  list-style: none;
  justify-content: center;
}

#menu li {
  margin: 0 15px;
}

#menu li a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
}

#menu li a:hover {
  color: var(--text-primary);
  text-decoration: none;
}

#domain {
  margin-right: auto;
}

#domain a {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
}

.cta-button {
  display: inline-block;
  background: var(--primary-gradient);
  color: white !important;
  padding: 14px 28px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  box-shadow: 0 4px 15px rgba(58, 123, 213, 0.3);
  transition: transform 0.2s, box-shadow 0.2s;
  text-decoration: none !important;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(58, 123, 213, 0.5);
  filter: brightness(1.1);
}

.qr-container {
  background: white;
  padding: 20px;
  border-radius: 16px;
  display: inline-block;
  margin: 30px 0;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.experimental {
  margin-top: 60px;
  padding: 20px;
  background: rgba(255, 68, 68, 0.1);
  border-left: 4px solid #ff4444;
  border-radius: 8px;
  color: #ff8888;
  font-size: 0.9rem;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin: 40px 0;
}

.feature-item {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  padding: 20px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.feature-item strong {
  display: block;
  margin-bottom: 8px;
  color: var(--accent-color);
}

/* Modal styles */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
}

.modal-content {
  background-color: var(--bg-color);
  margin: 15% auto;
  padding: 30px;
  border: 1px solid var(--accent-color);
  width: 80%;
  max-width: 400px;
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 0 30px rgba(0, 210, 255, 0.2);
}

.error-popup {
  color: #ff4444;
  margin-bottom: 20px;
  font-weight: 700;
}

.copy-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: white;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

.copy-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

.ss-prominent-box {
  background: rgba(0, 210, 255, 0.1);
  border: 2px solid #00d2ff;
  border-radius: 12px;
  padding: 25px;
  margin: 30px auto;
  max-width: 600px;
  text-align: center;
}

.ss-prominent-box strong {
  display: block;
  font-size: 1.2rem;
  color: #00d2ff;
  margin-bottom: 15px;
}

.ss-copy-container {
  background: rgba(0, 0, 0, 0.3);
  padding: 15px;
  border-radius: 8px;
  margin: 15px 0;
}

.ss-copy-container p {
  font-size: 0.85rem;
  color: #aaa;
  margin-bottom: 5px;
}

.ss-copy-text {
  font-family: monospace;
  background: #222;
  padding: 8px;
  border-radius: 4px;
  color: #fff;
  cursor: pointer;
  word-break: break-all;
  display: block;
  font-size: 1.1rem;
  direction: ltr;
}

.ss-copy-text:hover {
  background: #333;
}