:root {
  --accent-color: #5865f2;
  --accent-hover: #404ddb;
  --accent-light: rgba(88, 101, 242, 0.1);
  --background-color: #f9f9fb;
  --card-bg: #ffffff;
  --text-color: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --card-shadow-hover: 0 4px 6px rgba(0, 0, 0, 0.07),
    0 2px 4px rgba(0, 0, 0, 0.06);
  --card-shadow-active: 0 10px 15px rgba(0, 0, 0, 0.1),
    0 4px 6px rgba(0, 0, 0, 0.05);
  --card-radius: 12px;
  --button-radius: 8px;
  --heading-font-weight: 600;
  --body-font-weight: 400;
  --transition-speed: 0.2s;
  --transition-ease: cubic-bezier(0.4, 0, 0.2, 1);
  --gradient-primary: linear-gradient(
    135deg,
    var(--accent-color) 0%,
    #7c3aed 100%
  );
  --gradient-subtle: linear-gradient(
    135deg,
    rgba(88, 101, 242, 0.05) 0%,
    rgba(124, 58, 237, 0.05) 100%
  );
}

@media (prefers-color-scheme: dark) {
  :root {
    --background-color: #0f172a;
    --card-bg: #1e293b;
    --text-color: #f1f5f9;
    --text-muted: #94a3b8;
    --text-light: #64748b;
    --border-color: #334155;
    --border-light: #475569;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
    --card-shadow-hover: 0 4px 6px rgba(0, 0, 0, 0.4),
      0 2px 4px rgba(0, 0, 0, 0.3);
    --card-shadow-active: 0 10px 15px rgba(0, 0, 0, 0.5),
      0 4px 6px rgba(0, 0, 0, 0.4);
    --gradient-subtle: linear-gradient(
      135deg,
      rgba(88, 101, 242, 0.1) 0%,
      rgba(124, 58, 237, 0.1) 100%
    );
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    sans-serif;
  color: var(--text-color);
  line-height: 1.6;
  background: var(--background-color);
  min-height: 100vh;
  font-weight: var(--body-font-weight);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  width: 95%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px 20px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-light);
}

.server-info {
  display: flex;
  align-items: center;
  gap: 16px;
}

.server-icon {
  width: 72px;
  height: 72px;
  border-radius: 16px;
  object-fit: cover;
  box-shadow: var(--card-shadow);
  transition: transform var(--transition-speed) var(--transition-ease);
}

.server-info h1 {
  font-weight: var(--heading-font-weight);
  font-size: 1.8rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0;
}

#exportCsvBtn {
  background: var(--gradient-primary);
  color: #ffffff;
  font-weight: var(--heading-font-weight);
  font-size: 0.95rem;
  border: none;
  border-radius: var(--button-radius);
  padding: 14px 28px;
  cursor: pointer;
  transition: all var(--transition-speed) var(--transition-ease);
  box-shadow: var(--card-shadow);
  position: relative;
  overflow: hidden;
}

#exportCsvBtn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.5s;
}

#exportCsvBtn:hover {
  box-shadow: var(--card-shadow-hover);
}

#exportCsvBtn:hover::before {
  left: 100%;
}

#exportCsvBtn:active {
  transform: translateY(0);
}

.tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
  padding: 8px;
  background: var(--card-bg);
  border-radius: 16px;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
}

.tab {
  flex: 1;
  text-align: center;
  padding: 14px 20px;
  background: transparent;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  font-weight: var(--heading-font-weight);
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: all var(--transition-speed) var(--transition-ease);
  position: relative;
  overflow: hidden;
}

.tab::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-subtle);
  opacity: 0;
  transition: opacity var(--transition-speed) var(--transition-ease);
}

.tab:hover::before {
  opacity: 1;
}

.tab.active {
  background: var(--gradient-primary);
  color: #ffffff;
  box-shadow: var(--card-shadow);
}

.tab.active::before {
  opacity: 0;
}

.tab:hover:not(.active) {
  color: var(--text-color);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.card {
  background: var(--card-bg);
  border-radius: var(--card-radius);
  padding: 24px;
  border: 1px solid var(--border-color);
  margin-bottom: 24px;
  transition: all var(--transition-speed) var(--transition-ease);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-speed) var(--transition-ease);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-light);
}

.card-title {
  font-size: 1.5rem;
  font-weight: var(--heading-font-weight);
  color: var(--text-color);
  margin: 0;
}

.chart-container {
  width: 100%;
  min-height: 320px;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 8px;
  overflow: hidden;
}

.loading-spinner {
  position: relative;
  width: 48px;
  height: 48px;
  border: 3px solid var(--border-light);
  border-radius: 50%;
  border-top-color: var(--accent-color);
  border-right-color: var(--accent-color);
  animation: spin 1s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

.loading-spinner::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 6px;
  right: 6px;
  bottom: 6px;
  border: 2px solid transparent;
  border-top-color: var(--accent-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite reverse;
}

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

.reset-zoom-btn {
  display: none;
  background: var(--gradient-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--button-radius);
  padding: 10px 16px;
  font-size: 0.85rem;
  font-weight: var(--heading-font-weight);
  cursor: pointer;
  transition: all var(--transition-speed) var(--transition-ease);
  box-shadow: var(--card-shadow);
}

.reset-zoom-btn:hover {
  box-shadow: var(--card-shadow-hover);
}

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

.highcharts-reset-zoom {
  display: none !important;
}

.leaderboard {
  list-style-type: none;
  margin: 0;
  padding: 0;
}

.leaderboard-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition-speed) var(--transition-ease);
  position: relative;
}

.leaderboard-item:last-child {
  border-bottom: none;
}

.leaderboard-item:hover {
  background: var(--gradient-subtle);
  margin: 0 -20px;
  padding: 20px 20px;
  border-radius: 8px;
}

.leaderboard-rank {
  font-weight: var(--heading-font-weight);
  color: var(--accent-color);
  font-size: 1.2rem;
  min-width: 40px;
  text-align: center;
}

.leaderboard-rank:nth-child(1) {
  color: #ffd700;
}

.leaderboard-item:nth-child(2) .leaderboard-rank {
  color: #c0c0c0;
}

.leaderboard-item:nth-child(3) .leaderboard-rank {
  color: #cd7f32;
}

.leaderboard-avatar {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: var(--card-shadow);
  transition: transform var(--transition-speed) var(--transition-ease);
}

.leaderboard-item:hover .leaderboard-avatar {
  transform: scale(1.05);
}

.leaderboard-info {
  flex-grow: 1;
}

.leaderboard-name {
  font-weight: var(--heading-font-weight);
  font-size: 1.1rem;
  color: var(--text-color);
  display: block;
  margin-bottom: 2px;
}

.leaderboard-username {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.leaderboard-score {
  font-weight: var(--heading-font-weight);
  color: var(--accent-color);
  font-size: 1.15rem;
  background: var(--accent-light);
  padding: 6px 12px;
  border-radius: 20px;
  min-width: 60px;
  text-align: center;
}

.grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
}

@media (min-width: 1200px) {
  .server-info h1 {
    font-size: 2.25rem;
  }
  
  .card-title {
    font-size: 1.6rem;
  }
  
  .leaderboard-name {
    font-size: 1.15rem;
  }
  
  .leaderboard-score {
    font-size: 1.2rem;
  }
  
  .grid {
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  }
}

@media (max-width: 1200px) {
  .grid {
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  }
}

@media (max-width: 768px) {
  .container {
    padding: 16px;
  }

  header {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }

  .server-info {
    flex-direction: column;
    gap: 12px;
  }

  .server-info h1 {
    font-size: 1.6rem;
  }

  .server-icon {
    width: 64px;
    height: 64px;
  }

  .tabs {
    flex-direction: column;
    gap: 8px;
    padding: 12px;
  }

  .tab {
    width: 100%;
    padding: 16px;
  }

  .grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .card {
    padding: 20px;
  }

  .card-header {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }

  .card-title {
    font-size: 1.4rem;
  }

  .leaderboard-item {
    gap: 12px;
  }

  .leaderboard-item:hover {
    margin: 0 -20px;
    padding: 20px;
  }

  .leaderboard-avatar {
    width: 44px;
    height: 44px;
  }

  .leaderboard-name {
    font-size: 1rem;
  }

  .leaderboard-score {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .container {
    width: 100%;
    padding: 12px;
  }

  .server-info h1 {
    font-size: 1.5rem;
  }

  .card {
    padding: 16px;
    margin-bottom: 16px;
  }

  .card-title {
    font-size: 1.25rem;
  }

  .chart-container {
    min-height: 280px;
  }

  #exportCsvBtn {
    padding: 12px 20px;
    font-size: 0.9rem;
  }

  .leaderboard-name {
    font-size: 0.95rem;
  }

  .leaderboard-score {
    font-size: 0.95rem;
  }
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--border-light);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-color);
}

::selection {
  background: var(--accent-color) !important;
}

::-moz-selection {
  background: var(--accent-color) !important;
}

.tab:focus,
#exportCsvBtn:focus,
.reset-zoom-btn:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}