:root {
  --bg: #1a1a1a;
  --bg-alt: #2d2d2d;
  --card: #242424;
  --text: #f0f0f0;
  --text-muted: #aaaaaa;
  --accent: #ff6b35;
  --accent-dark: #d55a2b;
  --danger: #d73a2c;
  --border: #444444;
  --shadow: 0 2px 8px rgba(0,0,0,0.5);
  --shadow-lg: 0 4px 12px rgba(0,0,0,0.7);
  --gap: 16px;
  --radius: 8px;
}

/* Light mode theme for override (if needed) */
:root[data-theme="light"] {
  --bg: #ffffff;
  --bg-alt: #f5f5f5;
  --card: #ffffff;
  --text: #1a1a1a;
  --text-muted: #666666;
  --accent: #ff6b35;
  --accent-dark: #d55a2b;
  --danger: #e74c3c;
  --border: #e0e0e0;
  --shadow: 0 2px 8px rgba(0,0,0,0.1);
  --shadow-lg: 0 4px 12px rgba(0,0,0,0.15);
}

* { 
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html, body { 
  margin: 0 !important;
  padding: 0 !important;
  background: var(--bg-alt) !important;
  color: var(--text) !important;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif !important;
  font-size: 15px !important;
  line-height: 1.5 !important;
  transition: background-color 0.3s, color 0.3s;
}
button {
  font-family: inherit !important;
  font-size: inherit !important;
  color: inherit !important;
}
input[type="text"],
input[type="date"],
input[type="number"],
textarea,
select {
  font-family: inherit !important;
  font-size: inherit !important;
  color: inherit !important;
}

.app-header {
  position: sticky !important;
  top: 0 !important;
  z-index: 10 !important;
  background: var(--card) !important;
  border-bottom: 2px solid var(--accent) !important;
  padding: 20px !important;
  display: flex !important;
  flex-direction: column !important;
  gap: var(--gap) !important;
  box-shadow: var(--shadow) !important;
}

.app-header > * {
  display: flex !important;
  flex-wrap: wrap !important;
  gap: 16px !important;
  align-items: center !important;
}

.app-header label { 
  display: inline-flex; align-items: center; gap: 8px; 
  font-weight: 500; color: var(--text);
  flex-direction: column;
  align-items: flex-start;
}
.app-header label span {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}
.app-header input[type="date"], .app-header input[type="number"] {
  background: var(--bg-alt); 
  color: var(--text); 
  border: 1px solid var(--border); 
  padding: 8px 12px; 
  border-radius: var(--radius);
  font-size: 14px;
  transition: border-color 0.2s;
}
.app-header input[type="date"]:focus, .app-header input[type="number"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}
.app-header button { 
  background: var(--accent); 
  color: white; 
  border: 0; 
  padding: 10px 16px; 
  border-radius: var(--radius); 
  cursor: pointer;
  font-weight: 600;
  transition: background 0.2s;
  font-size: 14px;
}
.app-header button:hover { background: var(--accent-dark); }
.app-header a { 
  background: var(--accent); 
  color: white; 
  padding: 10px 16px; 
  border-radius: var(--radius); 
  text-decoration: none;
  font-weight: 600;
  transition: background 0.2s;
  display: inline-block;
  font-size: 14px;
}
.app-header a:hover { background: var(--accent-dark); }
.app-header .danger { background: var(--danger); color: white; }
.app-header .danger:hover { background: #c0392b; }
.event-meta, .config { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; }

.teams {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--gap);
  padding: 20px;
  max-width: 1400px;
  margin: 0 auto;
}

.team-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  display: flex; 
  flex-direction: column; 
  gap: 16px;
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s, transform 0.2s;
}
.team-card:hover { 
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.team-card header {
  display: flex; 
  justify-content: space-between; 
  align-items: flex-start; 
  gap: 12px;
  border-bottom: 2px solid var(--bg-alt);
  padding-bottom: 12px;
}
.team-card label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-weight: 500;
  color: var(--text);
  flex: 1;
}
.team-card label span {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}
.team-card input[type="text"] {
  background: var(--bg-alt);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 8px 12px;
  border-radius: var(--radius);
  font-size: 15px;
  transition: border-color 0.2s;
}
.team-card input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}
.team-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.team-actions button { 
  padding: 8px 12px; 
  font-size: 13px;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  background: var(--accent);
  color: white;
  font-weight: 500;
  transition: background 0.2s;
}
.team-actions button:hover { background: var(--accent-dark); }
.team-actions button.danger { background: var(--danger); }
.team-actions button.danger:hover { background: #c0392b; }

.blocks {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.block {
  border: 1px solid var(--border); 
  border-radius: var(--radius); 
  padding: 12px; 
  background: var(--bg-alt);
  display: flex; 
  flex-direction: column; 
  gap: 10px;
  transition: background 0.2s;
}
.block:hover { background: var(--card); }
.block-head { 
  display: flex; 
  align-items: center; 
  gap: 10px; 
  justify-content: space-between; 
  flex-wrap: wrap;
}
.block-head label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-weight: 500;
  flex: 1;
  min-width: 150px;
}
.block-head label span {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}
.block-head input[type="text"] {
  background: var(--bg-alt);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 6px 10px;
  border-radius: var(--radius);
  font-size: 14px;
}
.block-head input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
}
.capacity { 
  color: var(--text-muted); 
  font-size: 12px;
  font-weight: 500;
  background: var(--bg-alt);
  padding: 4px 8px;
  border-radius: var(--radius);
}
.block-head button { 
  padding: 6px 10px; 
  font-size: 12px;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  background: var(--danger);
  color: white;
  font-weight: 500;
  transition: background 0.2s;
}
.block-head button:hover { background: #c0392b; }

.names { 
  list-style: none; 
  padding: 0; 
  margin: 0; 
  display: flex; 
  flex-wrap: wrap; 
  gap: 8px;
}
.names li {
  display: flex;
  align-items: center; 
  gap: 6px; 
  padding: 2px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.names input[type="text"] {
  background: var(--bg-alt);
  color: var(--text);
  border: none;
  padding: 4px 8px;
  font-size: 13px;
  min-width: 80px;
  outline: none;
}
.names button {
  background: transparent;
  border: none;
  color: var(--danger);
  cursor: pointer;
  padding: 0 6px;
  font-weight: bold;
  transition: color 0.2s;
}
.names button:hover { color: #c0392b; }

.name-input-row { 
  display: flex; 
  gap: 8px;
  margin-top: 4px;
}
.name-input-row input {
  flex: 1; 
  padding: 8px 12px; 
  border-radius: var(--radius); 
  border: 1px solid var(--border);
  background: var(--bg-alt); 
  color: var(--text);
  font-size: 14px;
}
.name-input-row input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}
.name-input-row button {
  padding: 8px 16px;
  background: var(--accent);
  color: white;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 600;
  font-size: 13px;
  transition: background 0.2s;
}
.name-input-row button:hover { background: var(--accent-dark); }

footer {
  padding: 20px;
  text-align: center;
  background: var(--card);
  border-top: 1px solid var(--border);
  margin-top: auto;
}
footer button {
  background: var(--accent);
  color: white;
  border: 0;
  padding: 12px 32px;
  border-radius: var(--radius);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
footer button:hover { background: var(--accent-dark); }

@media (max-width: 768px) {
  .teams {
    grid-template-columns: 1fr;
  }
  .app-header {
    padding: 16px;
  }
  .event-meta, .config {
    flex-direction: column;
    gap: 16px;
  }
  .event-meta label, .config label, .app-header button, .app-header a {
    width: 100%;
  }
  .app-header button, .app-header a {
    text-align: center;
  }
  .team-actions {
    width: 100%;
  }
  .team-actions button {
    flex: 1;
    min-width: 100px;
  }
  .block-head {
    flex-direction: column;
    align-items: stretch;
  }
  .block-head label, .block-head input[type="text"] {
    width: 100%;
  }
  .block-head button {
    align-self: flex-start;
  }
}