:root {
  --primary: #AED9E0;
  --secondary: #2E3A59;
  --bg-color: #ffffff;
  --text-color: #171717;
  --text-muted: #555555;
  --ice-gradient: linear-gradient(135deg, rgba(174, 217, 224, 0.1) 0%, rgba(255, 255, 255, 0.8) 100%);
  --glass-bg: rgba(255, 255, 255, 0.7);
  --border-color: #e5e7eb;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --radius: 12px;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-image: radial-gradient(circle at 2px 2px, var(--primary) 1px, transparent 0);
  background-size: 40px 40px;
  background-attachment: fixed;
  opacity: 0.98;
}

/* Typography */
h1, h2, h3, h4 {
  color: var(--secondary);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 1rem;
}

a {
  color: var(--secondary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary);
}

/* Layout & Container */
header {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 5%;
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--secondary);
  text-transform: uppercase;
}

.logo span {
  color: var(--primary);
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.container {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1.5rem;
}

/* Bento Grid System */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.bento-item {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.bento-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.bento-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--primary);
}

/* Tables & Data */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  margin-top: 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  background: var(--ice-gradient);
  color: var(--secondary);
  font-weight: 600;
  padding: 1rem;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--border-color);
}

td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  font-variant-numeric: tabular-nums;
}

tr:hover td {
  background-color: var(--accent-ice);
}

/* Athlete Profile Card */
.athlete-card {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.5rem;
  background: var(--ice-gradient);
  border-radius: var(--radius);
  border: 1px solid var(--primary);
}

.athlete-thumb {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--primary);
}

/* Search & Filters */
.controls-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
  background: var(--ice-gradient);
  padding: 1rem;
  border-radius: var(--radius);
}

input[type="search"], select {
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  outline: none;
  font-family: inherit;
  transition: var(--transition);
}

input[type="search"]:focus, select:focus {
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px var(--accent-ice);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--secondary);
}

.btn-primary:hover {
  background-color: var(--secondary);
  color: var(--bg-color);
}

.btn-secondary {
  background-color: var(--secondary);
  color: #ffffff;
}

.btn-secondary:hover {
  background-color: var(--primary);
  color: var(--secondary);
}

/* Stats Tags */
.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  background: var(--primary);
  color: var(--secondary);
}

/* News Section */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
}

.news-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: calc(var(--radius) - 4px);
  margin-bottom: 1rem;
}

/* Footer */
footer {
  margin-top: 5rem;
  padding: 4rem 5% 2rem;
  background: var(--secondary);
  color: #ffffff;
}

footer a {
  color: var(--primary);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 2rem;
  margin-bottom: 2rem;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  nav ul {
    display: none;
  }
  
  .bento-grid {
    grid-template-columns: 1fr;
  }
  
  .controls-bar {
    flex-direction: column;
  }
  
  .controls-bar > * {
    width: 100%;
  }
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade {
  animation: fadeIn 0.5s ease forwards;
}

/* API-ready Loading states */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  from { background-position: 200% 0; }
  to { background-position: -200% 0; }
}