/* Modern styles for Graph website */

:root {
  --primary-color: #4a6cf7;
  --text-color: #333;
  --background-color: #f8fafc;
  --card-bg-color: #ffffff;
  --shadow-color: rgba(0, 0, 0, 0.08);
  --accent-color: #4a6cf7;
  --gradient-start: #4a6cf7;
  --gradient-end: #6e8cff;
  --font-family: 'SF Pro Text', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--text-color);
  background-color: var(--background-color);
  line-height: 1.6;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background-image:
    radial-gradient(circle at 25% 25%, rgba(74, 108, 247, 0.05) 0%, transparent 30%),
    radial-gradient(circle at 75% 75%, rgba(74, 108, 247, 0.05) 0%, transparent 30%);
}

.container {
  max-width: 800px;
  padding: 2rem;
  text-align: center;
  width: 100%;
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.5px;
}

.card {
  background-color: var(--card-bg-color);
  border-radius: 24px;
  padding: 2.5rem;
  box-shadow:
    0 10px 30px var(--shadow-color),
    0 1px 3px rgba(0, 0, 0, 0.05);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow:
    0 20px 40px var(--shadow-color),
    0 1px 5px rgba(0, 0, 0, 0.1);
}

.video-container {
  position: relative;
  width: 100%;
  max-width: 720px;
  margin: 1.5rem auto 0;
  overflow: hidden;
  border-radius: 12px;
}

video {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 8px 20px var(--shadow-color);
  transition: all 0.5s cubic-bezier(0.215, 0.61, 0.355, 1);
  opacity: 0.8;
  transform: scale(0.98);
}

video.loaded {
  opacity: 1;
  transform: scale(1);
}

video:hover {
  transform: scale(1.02);
  box-shadow: 0 12px 30px var(--shadow-color);
}

.video-container::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  pointer-events: none;
}

/* Custom video controls styling */
video::-webkit-media-controls {
  background-color: var(--card-bg-color);
  border-radius: 12px;
}

video::-webkit-media-controls-panel {
  background-color: rgba(255, 255, 255, 0.8);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }

  .card {
    padding: 1.5rem;
    border-radius: 20px;
  }

  h1 {
    font-size: 2rem;
  }
}

/* Animation for the page elements */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card {
  animation: fadeIn 0.8s ease-out forwards;
}

/* Subtle shimmer effect on hover */
@keyframes shimmer {
  0% {
    background-position: -100% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.card:hover h1 {
  background: linear-gradient(
    90deg,
    var(--gradient-start) 0%,
    var(--gradient-end) 30%,
    var(--gradient-start) 50%,
    var(--gradient-end) 70%,
    var(--gradient-start) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  animation: shimmer 3s linear infinite;
}

/* Accessibility improvements */
:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* Preloader */
.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--background-color);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.5s ease;
}

.preloader-hidden {
  opacity: 0;
}

.preloader-spinner {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: 3px solid rgba(74, 108, 247, 0.1);
  border-top: 3px solid var(--primary-color);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --primary-color: #7f96ff;
    --text-color: #e1e1e1;
    --background-color: #121212;
    --card-bg-color: #1e1e1e;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --gradient-start: #7f96ff;
    --gradient-end: #a4b5ff;
  }

  .card {
    border: 1px solid rgba(255, 255, 255, 0.05);
  }

  .preloader-spinner {
    border: 3px solid rgba(127, 150, 255, 0.1);
    border-top: 3px solid var(--primary-color);
  }
}