body { font-family: Arial, sans-serif; margin: 0; background: #f5f5f5; color: #333; }
header { background: #2c3e50; color: white; padding: 15px 0; }
.header-title { text-align: center; margin-bottom: 10px; }
.header-title h1 { margin: 0; font-size: 1.8em; }
.header-nav { text-align: center; }
.nav-menu { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.nav-menu li { display: inline-block; }
.nav-menu li a, .nav-menu li span { color: white; text-decoration: none; padding: 5px 10px; border-radius: 4px; transition: background 0.2s; }
.nav-menu li a:hover { background: #34495e; }
main { max-width: 1200px; margin: 20px auto; padding: 0 20px; }
.btn { display: inline-block; background: #3498db; color: white; padding: 8px 16px; border-radius: 4px; text-decoration: none; border: none; cursor: pointer; font-size: 14px; }
.btn:hover { background: #2980b9; }
.btn.secondary { background: #95a5a6; }
.btn.small { padding: 4px 8px; font-size: 12px; }
.btn.danger { background: #e74c3c; }
.btn.danger:hover { background: #c0392b; }
.btn.active { background: #2ecc71; }
.form-container, .profile-container, .admin-section, .welcome { background: white; padding: 20px; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
.form-container { max-width: 500px; margin: 0 auto; }
.form-group { margin-bottom: 15px; }
.form-group label { display: block; margin-bottom: 5px; font-weight: bold; }
.form-group input[type="text"], .form-group input[type="password"], .form-group select { width: 100%; padding: 8px; border: 1px solid #ddd; border-radius: 4px; box-sizing: border-box; }
.flashes { list-style: none; padding: 0; margin-bottom: 20px; }
.flashes li { background: #f8d7da; color: #721c24; padding: 10px; border-radius: 4px; margin-bottom: 5px; }
.board-list { list-style: none; padding: 0; }
.board-item { display: flex; justify-content: space-between; align-items: center; padding: 10px; border-bottom: 1px solid #ddd; flex-wrap: wrap; gap: 10px; }
.board-info { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 0; flex-wrap: wrap; }
.board-info a.board-name { font-weight: bold; color: #2c3e50; text-decoration: none; font-size: 16px; }
.board-date { font-size: 12px; color: #888; }
.online-badge { font-size: 13px; color: #27ae60; margin-left: 10px; }
.board-actions { display: flex; gap: 5px; }
.inline-rename-form { display: flex; gap: 5px; align-items: center; }
table { width: 100%; border-collapse: collapse; margin-top: 20px; }
th, td { padding: 10px; text-align: left; border-bottom: 1px solid #ddd; }
th { background: #f2f2f2; }
.admin-menu { list-style: none; padding: 0; display: flex; gap: 15px; flex-wrap: wrap; }
.welcome { text-align: center; }