:root {
  --primary-bg: #0a0a0c;
  --accent-blue: #00d2ff;
  --accent-purple: #9d50bb;
  --text-main: #f0f0f5;
  --text-dim: #a0a0b0;
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --hero-gradient: linear-gradient(135deg, #fff 0%, #a0a0ff 100%);
  --bg-dots: rgba(0, 210, 255, 0.05);
  --bg-dots-alt: rgba(157, 80, 187, 0.05);
  --bg-image: url('./assets/background.png');
  --font-family: 'Outfit', sans-serif;
  --footer-text: rgba(255, 255, 255, 0.3);
}

.light-theme {
  --primary-bg: #f5f5f7;
  --text-main: #1d1d1f;
  --text-dim: #424245;
  --glass-bg: rgba(0, 0, 0, 0.02);
  --glass-border: rgba(0, 0, 0, 0.06);
  --hero-gradient: linear-gradient(135deg, #1d1d1f 0%, #434343 100%);
  --bg-dots: rgba(0, 210, 255, 0.08);
  --bg-dots-alt: rgba(157, 80, 187, 0.08);
  --bg-image: url('./assets/background-light.png');
  --footer-text: rgba(0, 0, 0, 0.4);
}

@media (prefers-color-scheme: light) {
  :root:not(.dark-theme) {
    --primary-bg: #f5f5f7;
    --text-main: #1d1d1f;
    --text-dim: #424245;
    --glass-bg: rgba(0, 0, 0, 0.02);
    --glass-border: rgba(0, 0, 0, 0.06);
    --hero-gradient: linear-gradient(135deg, #1d1d1f 0%, #434343 100%);
    --bg-dots: rgba(0, 210, 255, 0.08);
    --bg-dots-alt: rgba(157, 80, 187, 0.08);
    --bg-image: url('./assets/background-light.png');
    --footer-text: rgba(0, 0, 0, 0.4);
  }
}

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

body {
  font-family: var(--font-family);
  background-color: var(--primary-bg);
  background-image:
    radial-gradient(circle at 20% 30%, var(--bg-dots) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, var(--bg-dots-alt) 0%, transparent 40%),
    var(--bg-image);
  background-size: cover;
  background-attachment: fixed;
  background-position: center;
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
  transition: background-color 0.5s ease, color 0.5s ease;
}

#app {
  width: 100%;
  max-width: 1200px;
  padding: 4rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 4rem;
  align-items: center;
}

.hero {
  text-align: center;
  margin-bottom: 2rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  background: var(--hero-gradient);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0;
  padding-bottom: 0.2em;
}

.content {
  width: 100%;
  max-width: 700px;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 2.5rem;
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), border-color 0.3s ease;
}

.glass-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.15);
}

.section h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--accent-blue);
}

.section p {
  color: var(--text-dim);
  font-size: 1.1rem;
  font-weight: 300;
}

.button {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 0.8rem 2rem;
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 100%);
  color: white;
  text-decoration: none;
  font-weight: 600;
  border-radius: 12px;
  transition: opacity 0.3s ease, transform 0.2s ease;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.button:hover {
  opacity: 0.9;
  transform: scale(1.02);
}

.footer {
  margin-top: auto;
  padding: 2rem;
  text-align: center;
  width: 100%;
  border-top: 1px solid var(--glass-border);
}

.footer-links {
  margin-bottom: 1rem;
}

.footer-links a {
  color: var(--text-dim);
  text-decoration: none;
  margin: 0 1rem;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--accent-blue);
}

/* Theme Toggle */
.theme-switch-wrapper {
  position: absolute;
  top: 2rem;
  right: 2rem;
  z-index: 100;
}

.theme-toggle-btn {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  padding: 0.8rem;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.theme-toggle-btn:hover {
  transform: scale(1.1);
  border-color: var(--accent-blue);
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
}

/* Show/hide icons based on theme */
.sun-icon { display: none; }
.moon-icon { display: block; }

.light-theme .sun-icon { display: block; }
.light-theme .moon-icon { display: none; }

.dark-theme .sun-icon { display: none; }
.dark-theme .moon-icon { display: block; }

@media (prefers-color-scheme: light) {
  :root:not(.dark-theme) .sun-icon { display: block; }
  :root:not(.dark-theme) .moon-icon { display: none; }
}

/* Existing footer styles */
.footer p {
  font-size: 0.8rem;
  color: var(--footer-text);
}

/* Animations */
.fade-in {
  opacity: 0;
  animation: fadeIn 1s forwards cubic-bezier(0.4, 0, 0.2, 1);
}

.delay-1 {
  animation-delay: 0.2s;
}

.delay-2 {
  animation-delay: 0.4s;
}

.delay-3 {
  animation-delay: 0.6s;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 600px) {
  #app {
    padding: 2rem 1rem;
    gap: 2rem;
  }

  .glass-card {
    padding: 1.5rem;
  }
}