/* Modern Light Design CSS Variable System */
:root {
  --font-family: 'Plus Jakarta Sans', sans-serif;
  --bg-gradient: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  --card-bg: rgba(255, 255, 255, 0.85);
  --card-border: rgba(255, 255, 255, 0.4);
  
  /* HSL Tailored Colors */
  --primary: hsl(256, 85%, 57%);
  --primary-hover: hsl(256, 85%, 50%);
  --primary-light: hsl(256, 85%, 95%);
  --secondary: hsl(280, 80%, 65%);
  
  --text-main: hsl(224, 71%, 4%);
  --text-muted: hsl(224, 20%, 45%);
  --accent: hsl(160, 84%, 39%);
  --accent-light: hsl(160, 84%, 95%);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.1);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background: var(--bg-gradient);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-x: hidden;
  padding: 20px;
  line-height: 1.6;
}

/* Glassmorphism Container */
.container {
  background: var(--card-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 48px;
  width: 100%;
  max-width: 540px;
  box-shadow: var(--shadow-lg);
  text-align: center;
  transition: var(--transition);
  animation: fadeIn 0.8s ease-out;
}

.container:hover {
  transform: translateY(-4px);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.12);
}

/* Typography & Layout */
.logo-container {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #ffffff;
  font-size: 32px;
  margin-bottom: 24px;
  box-shadow: 0 8px 24px rgba(108, 92, 231, 0.3);
  animation: float 4s ease-in-out infinite;
}

h1 {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 12px;
}

.subtitle {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 36px;
}

/* Features Grid */
.features {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 36px;
  text-align: left;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.5);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.5);
  transition: var(--transition);
  cursor: pointer;
}

.feature-item:hover {
  background: rgba(255, 255, 255, 0.9);
  transform: translateX(6px);
  border-color: var(--primary);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  color: var(--primary);
  font-size: 18px;
}

.feature-text h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.feature-text p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Buttons and Interactive Elements */
.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  padding: 16px;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: none;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #ffffff;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(108, 92, 231, 0.25);
  transition: var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(108, 92, 231, 0.4);
  filter: brightness(1.05);
}

.btn:active {
  transform: translateY(0);
}

.footer {
  margin-top: 32px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.footer a:hover {
  text-decoration: underline;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* Responsive adjustments */
@media (max-width: 600px) {
  .container {
    padding: 32px 24px;
  }
  
  h1 {
    font-size: 1.8rem;
  }
}